From bd4f730b168d00cc87139e8f376b2da65f6eb15b Mon Sep 17 00:00:00 2001
From: KiritoTRw <3021577574@qq.com>
Date: Fri, 19 Aug 2016 10:57:19 +0800
Subject: [PATCH] Powered By HC TECH : AutoACer Engine

1900-1999
---
 HDOJ/1901_autoAC.cpp |  45 ++++++++++
 HDOJ/1902_autoAC.cpp |  39 +++++++++
 HDOJ/1903_autoAC.cpp |  33 +++++++
 HDOJ/1904_autoAC.cpp |  40 +++++++++
 HDOJ/1905_autoAC.cpp |  41 +++++++++
 HDOJ/1907_autoAC.cpp |  21 +++++
 HDOJ/1908_autoAC.cpp |  50 +++++++++++
 HDOJ/1911_autoAC.cpp |  63 ++++++++++++++
 HDOJ/1912_autoAC.cpp |  54 ++++++++++++
 HDOJ/1913_autoAC.cpp |  28 ++++++
 HDOJ/1914_autoAC.cpp |  93 ++++++++++++++++++++
 HDOJ/1915_autoAC.cpp |  53 ++++++++++++
 HDOJ/1916_autoAC.cpp |  58 +++++++++++++
 HDOJ/1920_autoAC.cpp |  29 +++++++
 HDOJ/1922_autoAC.cpp | 107 +++++++++++++++++++++++
 HDOJ/1923_autoAC.cpp | 136 +++++++++++++++++++++++++++++
 HDOJ/1924_autoAC.cpp | 103 ++++++++++++++++++++++
 HDOJ/1925_autoAC.cpp |  55 ++++++++++++
 HDOJ/1926_autoAC.cpp |  30 +++++++
 HDOJ/1930_autoAC.cpp |  81 +++++++++++++++++
 HDOJ/1934_autoAC.cpp | 115 +++++++++++++++++++++++++
 HDOJ/1936_autoAC.cpp |  93 ++++++++++++++++++++
 HDOJ/1937_autoAC.cpp |  67 +++++++++++++++
 HDOJ/1939_autoAC.cpp |  26 ++++++
 HDOJ/1940_autoAC.cpp |  66 ++++++++++++++
 HDOJ/1941_autoAC.cpp |  59 +++++++++++++
 HDOJ/1943_autoAC.cpp |  20 +++++
 HDOJ/1944_autoAC.cpp |  46 ++++++++++
 HDOJ/1945_autoAC.cpp |  42 +++++++++
 HDOJ/1949_autoAC.cpp |  72 ++++++++++++++++
 HDOJ/1950_autoAC.cpp |  36 ++++++++
 HDOJ/1951_autoAC.cpp |  74 ++++++++++++++++
 HDOJ/1954_autoAC.cpp |  71 +++++++++++++++
 HDOJ/1955_autoAC.cpp |  84 ++++++++++++++++++
 HDOJ/1956_autoAC.cpp | 127 +++++++++++++++++++++++++++
 HDOJ/1957_autoAC.cpp | 201 +++++++++++++++++++++++++++++++++++++++++++
 HDOJ/1959_autoAC.cpp |  69 +++++++++++++++
 HDOJ/1960_autoAC.cpp |  69 +++++++++++++++
 HDOJ/1962_autoAC.cpp |  74 ++++++++++++++++
 HDOJ/1963_autoAC.cpp |  39 +++++++++
 HDOJ/1964_autoAC.cpp | 181 ++++++++++++++++++++++++++++++++++++++
 HDOJ/1965_autoAC.cpp |  89 +++++++++++++++++++
 HDOJ/1966_autoAC.cpp |  57 ++++++++++++
 HDOJ/1967_autoAC.cpp | 102 ++++++++++++++++++++++
 HDOJ/1969_autoAC.cpp |  39 +++++++++
 HDOJ/1970_autoAC.cpp |  59 +++++++++++++
 HDOJ/1971_autoAC.cpp |  78 +++++++++++++++++
 HDOJ/1972_autoAC.cpp |  48 +++++++++++
 HDOJ/1973_autoAC.cpp | 113 ++++++++++++++++++++++++
 HDOJ/1975_autoAC.cpp |  44 ++++++++++
 HDOJ/1976_autoAC.cpp |  24 ++++++
 HDOJ/1977_autoAC.cpp |  18 ++++
 HDOJ/1978_autoAC.cpp |  25 ++++++
 HDOJ/1979_autoAC.cpp |   9 ++
 HDOJ/1981_autoAC.cpp |  39 +++++++++
 HDOJ/1982_autoAC.cpp |  46 ++++++++++
 HDOJ/1983_autoAC.cpp | 145 +++++++++++++++++++++++++++++++
 HDOJ/1984_autoAC.cpp |  22 +++++
 HDOJ/1985_autoAC.cpp |  23 +++++
 HDOJ/1986_autoAC.cpp |  51 +++++++++++
 HDOJ/1987_autoAC.cpp |  59 +++++++++++++
 HDOJ/1988_autoAC.cpp |  72 ++++++++++++++++
 HDOJ/1990_autoAC.cpp |  29 +++++++
 HDOJ/1992_autoAC.cpp |  15 ++++
 HDOJ/1993_autoAC.cpp | 145 +++++++++++++++++++++++++++++++
 HDOJ/1994_autoAC.cpp |  17 ++++
 HDOJ/1995_autoAC.cpp |  11 +++
 HDOJ/1996_autoAC.cpp |  19 ++++
 HDOJ/1997_autoAC.cpp |  46 ++++++++++
 HDOJ/1998_autoAC.cpp |  13 +++
 HDOJ/1999_autoAC.cpp |  35 ++++++++
 71 files changed, 4282 insertions(+)
 create mode 100644 HDOJ/1901_autoAC.cpp
 create mode 100644 HDOJ/1902_autoAC.cpp
 create mode 100644 HDOJ/1903_autoAC.cpp
 create mode 100644 HDOJ/1904_autoAC.cpp
 create mode 100644 HDOJ/1905_autoAC.cpp
 create mode 100644 HDOJ/1907_autoAC.cpp
 create mode 100644 HDOJ/1908_autoAC.cpp
 create mode 100644 HDOJ/1911_autoAC.cpp
 create mode 100644 HDOJ/1912_autoAC.cpp
 create mode 100644 HDOJ/1913_autoAC.cpp
 create mode 100644 HDOJ/1914_autoAC.cpp
 create mode 100644 HDOJ/1915_autoAC.cpp
 create mode 100644 HDOJ/1916_autoAC.cpp
 create mode 100644 HDOJ/1920_autoAC.cpp
 create mode 100644 HDOJ/1922_autoAC.cpp
 create mode 100644 HDOJ/1923_autoAC.cpp
 create mode 100644 HDOJ/1924_autoAC.cpp
 create mode 100644 HDOJ/1925_autoAC.cpp
 create mode 100644 HDOJ/1926_autoAC.cpp
 create mode 100644 HDOJ/1930_autoAC.cpp
 create mode 100644 HDOJ/1934_autoAC.cpp
 create mode 100644 HDOJ/1936_autoAC.cpp
 create mode 100644 HDOJ/1937_autoAC.cpp
 create mode 100644 HDOJ/1939_autoAC.cpp
 create mode 100644 HDOJ/1940_autoAC.cpp
 create mode 100644 HDOJ/1941_autoAC.cpp
 create mode 100644 HDOJ/1943_autoAC.cpp
 create mode 100644 HDOJ/1944_autoAC.cpp
 create mode 100644 HDOJ/1945_autoAC.cpp
 create mode 100644 HDOJ/1949_autoAC.cpp
 create mode 100644 HDOJ/1950_autoAC.cpp
 create mode 100644 HDOJ/1951_autoAC.cpp
 create mode 100644 HDOJ/1954_autoAC.cpp
 create mode 100644 HDOJ/1955_autoAC.cpp
 create mode 100644 HDOJ/1956_autoAC.cpp
 create mode 100644 HDOJ/1957_autoAC.cpp
 create mode 100644 HDOJ/1959_autoAC.cpp
 create mode 100644 HDOJ/1960_autoAC.cpp
 create mode 100644 HDOJ/1962_autoAC.cpp
 create mode 100644 HDOJ/1963_autoAC.cpp
 create mode 100644 HDOJ/1964_autoAC.cpp
 create mode 100644 HDOJ/1965_autoAC.cpp
 create mode 100644 HDOJ/1966_autoAC.cpp
 create mode 100644 HDOJ/1967_autoAC.cpp
 create mode 100644 HDOJ/1969_autoAC.cpp
 create mode 100644 HDOJ/1970_autoAC.cpp
 create mode 100644 HDOJ/1971_autoAC.cpp
 create mode 100644 HDOJ/1972_autoAC.cpp
 create mode 100644 HDOJ/1973_autoAC.cpp
 create mode 100644 HDOJ/1975_autoAC.cpp
 create mode 100644 HDOJ/1976_autoAC.cpp
 create mode 100644 HDOJ/1977_autoAC.cpp
 create mode 100644 HDOJ/1978_autoAC.cpp
 create mode 100644 HDOJ/1979_autoAC.cpp
 create mode 100644 HDOJ/1981_autoAC.cpp
 create mode 100644 HDOJ/1982_autoAC.cpp
 create mode 100644 HDOJ/1983_autoAC.cpp
 create mode 100644 HDOJ/1984_autoAC.cpp
 create mode 100644 HDOJ/1985_autoAC.cpp
 create mode 100644 HDOJ/1986_autoAC.cpp
 create mode 100644 HDOJ/1987_autoAC.cpp
 create mode 100644 HDOJ/1988_autoAC.cpp
 create mode 100644 HDOJ/1990_autoAC.cpp
 create mode 100644 HDOJ/1992_autoAC.cpp
 create mode 100644 HDOJ/1993_autoAC.cpp
 create mode 100644 HDOJ/1994_autoAC.cpp
 create mode 100644 HDOJ/1995_autoAC.cpp
 create mode 100644 HDOJ/1996_autoAC.cpp
 create mode 100644 HDOJ/1997_autoAC.cpp
 create mode 100644 HDOJ/1998_autoAC.cpp
 create mode 100644 HDOJ/1999_autoAC.cpp

diff --git a/HDOJ/1901_autoAC.cpp b/HDOJ/1901_autoAC.cpp
new file mode 100644
index 0000000..f10878f
--- /dev/null
+++ b/HDOJ/1901_autoAC.cpp
@@ -0,0 +1,45 @@
+#include<stdio.h>
+#include<string.h>
+#include<iostream>
+using namespace std;
+char s[10005];
+int cur, len;
+double solve(){
+    double c = 1;
+    while(!(s[cur] == '(' || s[cur] >= '0' && s[cur] <= '9' || s[cur] == '-') && cur < len)
+        cur++;
+    if(s[cur] == '-')
+        c = -1, cur++;
+    if(s[cur] == '('){
+        double w = 0.1, p = 0;
+        if(s[++cur] == '.' || s[cur+1] == '.'){
+            if(s[cur+1] == '.')
+                cur++;
+            for(int i = cur + 1; s[i] >= '0' && s[i] <= '9' && s[i]; i++, cur = i)
+                p = p + (s[i] - '0') * w, w *= 0.1;
+        }
+        else
+            p = s[cur++] - '0';
+        double a, b;
+        a = solve();
+        b = solve();
+        return (a+b)*p + (a-b) * (1-p);
+    }
+    else{
+        double p = 0;
+        for(int i = cur; s[i] >= '0' && s[i] <= '9'; i++, cur=i)
+            p = p * 10 + (s[i]-'0');
+        return c * p;
+    }
+} 
+int main()
+{
+    double p, a, b;
+    while(gets(s)&& strcmp(s, "()"))
+    {
+        len = strlen(s);
+        cur = 0; 
+        printf("%.2lf\n", solve());
+    }
+    return 0;
+}
diff --git a/HDOJ/1902_autoAC.cpp b/HDOJ/1902_autoAC.cpp
new file mode 100644
index 0000000..c28f9a6
--- /dev/null
+++ b/HDOJ/1902_autoAC.cpp
@@ -0,0 +1,39 @@
+#include <iostream>
+#include <cstdio>
+#include <algorithm>
+const int MAX = 20000+5;
+int main()
+{
+    int n,m,d[MAX],a[MAX];
+    while(std::cin>>n>>m,(n+m))
+    {
+        for(int i = 0;i < n;i++)
+          std::cin>>d[i];
+        for(int i = 0;i < m;i++)
+          std::cin>>a[i];
+        if(n>m)
+        {
+          std::cout<<"Loowater is doomed!"<<std::endl;
+          continue;
+        }
+        std::sort(d,d+n);
+        std::sort(a,a+m);
+        int tot = 0;
+        int i = 0,j=0;
+        while(i<n&&j<m)
+        {
+            if(a[j]>=d[i]){
+               tot += a[j];
+               j++,i++;
+            }else
+            {
+                j++;
+            }
+        }
+        if(i>=n)
+          std::cout<<tot<<std::endl;
+        else
+          std::cout<<"Loowater is doomed!"<<std::endl;
+    }
+    return 0;
+}
diff --git a/HDOJ/1903_autoAC.cpp b/HDOJ/1903_autoAC.cpp
new file mode 100644
index 0000000..c7c5e1b
--- /dev/null
+++ b/HDOJ/1903_autoAC.cpp
@@ -0,0 +1,33 @@
+#include<iostream>
+#include<math.h>
+using namespace std;
+int const MAX =0x3f3f3f3f;
+double dp[2][366];
+double exchange[366];
+double commissionRate = 0.97;
+int mask =100;
+int main()
+{
+    int days=0;
+    while(scanf("%d",&days) && days !=0 )
+    {
+        memset(dp,-MAX,sizeof(dp));
+        dp[0][1]=100000.0;
+        for(int i=1;i<=days;i++ )
+            scanf("%lf",&exchange[i]);
+        dp[1][1] = (dp[0][1]/exchange[1])*commissionRate;
+        for(int i=2;i<=days;i++)
+        {
+            if(dp[0][i-1] > dp[1][i-1]*exchange[i]*commissionRate)
+                dp[0][i] = (int)dp[0][i-1]+0.0;
+            else
+                dp[0][i] =(int)(dp[1][i-1]*exchange[i]*commissionRate)+0.0;
+            if(dp[1][i-1] > (dp[0][i-1]/exchange[i])*commissionRate)
+                dp[1][i] = (int)(dp[1][i-1])+0.0;
+            else
+                dp[1][i] =(int)((dp[0][i-1]/exchange[i])*commissionRate)+0.0;
+        }
+        printf("%.2lf\n",dp[0][days]/100);  
+    }
+    return 0;
+}
diff --git a/HDOJ/1904_autoAC.cpp b/HDOJ/1904_autoAC.cpp
new file mode 100644
index 0000000..0cf673d
--- /dev/null
+++ b/HDOJ/1904_autoAC.cpp
@@ -0,0 +1,40 @@
+#include<stdio.h>
+#include<string>
+#include<algorithm>
+#include<iostream>
+#include<map>
+using namespace std;
+int s[10001][6];
+int main()
+{
+ int n,i,j,sum,max,num;
+ map<string,int>::iterator it;
+ map<string,int>ans;
+ while(scanf("%d",&n),n)
+ {
+  ans.clear();
+  for(i=1;i<=n;i++)
+  for(j=0;j<5;j++)
+  scanf("%d",&s[i][j]);
+  for(i=1;i<=n;i++)
+  sort(s[i],s[i]+5);
+  for(i=1;i<=n;i++)
+  {
+    string str;
+    for(j=0;j<5;j++)
+    {
+    char a[5];
+    itoa(s[i][j],a,10);
+    str+=a;
+    }
+    ans[str]++;
+  }
+  max=num=0;
+  for(it=ans.begin();it!=ans.end();it++)
+  if(it->second>max)max=it->second;
+  for(it=ans.begin();it!=ans.end();it++)
+  if(it->second==max)num++;
+  printf("%d\n",num*max);
+ }
+ return 0;
+}
diff --git a/HDOJ/1905_autoAC.cpp b/HDOJ/1905_autoAC.cpp
new file mode 100644
index 0000000..6d5c6e8
--- /dev/null
+++ b/HDOJ/1905_autoAC.cpp
@@ -0,0 +1,41 @@
+#include <iostream>
+#include <cstring>
+#include <cmath>
+#include <string>
+#include <algorithm>
+#include <map>
+using namespace std;
+bool prime(__int64 a)
+{
+    __int64 i;
+    for(i=2;i*i<=a;i++)
+    {
+        if(a%i == 0)return false;
+    }
+    return true;
+}
+bool q_pow(__int64 a,__int64 b)
+{
+    __int64 res=1,mod=b,carry=a;
+    while(b)
+    {
+        if(b%2)
+        {
+            res=res*a%mod;
+        }
+        a=a*a%mod;
+        b>>=1;
+    }
+    if(res == carry)return true;
+    else return false;
+}
+int main()
+{
+    __int64 p,a;
+    while(~scanf("%I64d %I64d",&p,&a),p+a)
+    {
+        if(!prime(p) && q_pow(a,p))puts("yes");
+        else puts("no");
+    }
+    return 0;
+}
diff --git a/HDOJ/1907_autoAC.cpp b/HDOJ/1907_autoAC.cpp
new file mode 100644
index 0000000..8460cdf
--- /dev/null
+++ b/HDOJ/1907_autoAC.cpp
@@ -0,0 +1,21 @@
+#include<stdio.h>
+int main()
+{
+    int temp,t,n,s,x,i;
+    scanf("%d",&t);
+    while(t--)
+    {
+        scanf("%d",&n);
+        for(i=s=temp=0;i<n;i++)
+        {
+            scanf("%d",&x);
+            if(x>1)    temp=1;
+            s^=x;
+        }
+        if((s&&temp)||(!s&&!temp))
+            puts("John");
+        else
+            puts("Brother");
+    }
+    return 0;
+}
diff --git a/HDOJ/1908_autoAC.cpp b/HDOJ/1908_autoAC.cpp
new file mode 100644
index 0000000..3db64e8
--- /dev/null
+++ b/HDOJ/1908_autoAC.cpp
@@ -0,0 +1,50 @@
+#include<iostream>
+#include<set>
+using namespace std;
+struct node
+{
+    node(int a,int b):num(a),p(b){}
+    int num;
+    int p;
+    bool operator < (const node a)const
+    {
+        return p<a.p;
+    }
+};
+int main()
+{
+    int com,k,p;
+    set<node> s;
+    while(cin>>com&&com)
+    {
+        switch(com)
+        {
+            case 1:
+            {
+                cin>>k>>p;
+                s.insert(node(k,p));
+            }break;
+            case 2:
+            {
+                if(s.empty())
+                    cout<<0<<endl;
+                else
+                {
+                    cout<<(*(--s.end())).num<<endl;
+                    s.erase(--s.end());
+                }
+            }break;
+            case 3:
+            {
+                if(s.empty())
+                    cout<<0<<endl;
+                else
+                {
+                    cout<<(*s.begin()).num<<endl;
+                    s.erase(s.begin());
+                }
+            }break;
+        }
+    }
+    return 0;
+}
diff --git a/HDOJ/1911_autoAC.cpp b/HDOJ/1911_autoAC.cpp
new file mode 100644
index 0000000..6037340
--- /dev/null
+++ b/HDOJ/1911_autoAC.cpp
@@ -0,0 +1,63 @@
+#include<cstdio>
+#include<cstring>
+#include<iostream>
+#include<algorithm>
+using namespace std;
+const long long inf=1LL<<35;
+const long long maxn=1e6+100;
+char str[110];
+long long x[maxn],y[maxn],z[maxn],cnt;
+long long Sum(long long val)
+{
+    long long sum=0;
+    for(int i=0;i<cnt;i++)
+    {
+        if(val<x[i])
+            continue;
+        sum+=(min(val,y[i])-x[i])/z[i]+1;
+    }
+    return sum;
+}
+void solve()
+{
+    long long l=1,r=inf,ans=-1;
+    while(l<=r)
+    {
+        long long mid=(l+r)>>1;
+        if(Sum(mid)&1)
+        {
+            r=mid-1;
+            ans=mid;
+        }
+        else
+            l=mid+1;
+    }
+    if(ans==-1)
+    {
+        printf("no corruption\n");
+        return;
+    }
+    printf("%I64d %I64d\n",ans,Sum(ans)-Sum(ans-1));
+}
+int main()
+{
+    cnt=0;
+    while(gets(str)!=NULL)
+    {
+        if(strlen(str)==0)
+        {
+            if(cnt==0)
+                continue;
+            solve();
+            cnt=0;
+        }
+        else
+        {
+            sscanf(str,"%I64d%I64d%I64d",&x[cnt],&y[cnt],&z[cnt]);
+            cnt++;
+        }
+    }
+    if(cnt)
+        solve();
+    return 0;
+}
diff --git a/HDOJ/1912_autoAC.cpp b/HDOJ/1912_autoAC.cpp
new file mode 100644
index 0000000..0a34df3
--- /dev/null
+++ b/HDOJ/1912_autoAC.cpp
@@ -0,0 +1,54 @@
+#include <iostream>
+#include <stdio.h>
+#include <cmath>
+#include <algorithm>
+#include <string.h>
+using namespace std;
+int L,d;
+struct I
+{
+    double l,r;
+}inter[10000];
+bool cmp(I a ,I b)
+{
+    if(a.r<b.r)
+        return true;
+    else if(a.r==b.r)
+    {
+        if(a.l>b.l)
+            return true;
+        return false;
+    }
+    return false;
+}
+int main()
+{
+    double x,y;
+    while(scanf("%d",&L)!=EOF)
+    {
+        scanf("%d",&d);
+        int n;
+        cin>>n;
+        for(int i=1;i<=n;i++)
+        {
+            scanf("%lf%lf",&x,&y);
+            inter[i].l=x-sqrt(d*d-y*y);
+            inter[i].r=x+sqrt(d*d-y*y);
+        }
+        sort(inter+1,inter+1+n,cmp);
+        int ans=1;
+        double temp=inter[1].r;
+        for(int i=2;i<=n;i++)
+        {
+            if(temp>L)
+                temp=L;
+            if(temp<inter[i].l)
+            {
+                ans++;
+                temp=inter[i].r;
+            }
+        }
+        cout<<ans<<endl;
+    }
+    return 0;
+}
diff --git a/HDOJ/1913_autoAC.cpp b/HDOJ/1913_autoAC.cpp
new file mode 100644
index 0000000..d8d4533
--- /dev/null
+++ b/HDOJ/1913_autoAC.cpp
@@ -0,0 +1,28 @@
+#include <stdio.h>
+#define N 1000
+int sum[N][N];
+int main()
+{
+ int c,n,i,j;
+ while (scanf("%d",&c)!=EOF)
+ {
+  scanf("%d",&n);
+  for(i=0;i<n;i++)
+  {
+   for(j=i;j<n;j++)
+    scanf("%d",&sum[i][j]);
+  }
+  for(i=0;i<n;i++)
+  {
+   for(j=i;j<n;j++)
+   {
+    if(i==0)
+     sum[i][j]=c+sum[i][j];
+    else
+     sum[i][j]=(sum[i-1][i-1]+c+sum[i][j])<(sum[i-1][j])?(sum[i-1][i-1]+c+sum[i][j]):(sum[i-1][j]);
+   }
+  }
+  printf("%d\n",sum[n-1][n-1]);
+ }
+ return 0;
+}
diff --git a/HDOJ/1914_autoAC.cpp b/HDOJ/1914_autoAC.cpp
new file mode 100644
index 0000000..da2ec53
--- /dev/null
+++ b/HDOJ/1914_autoAC.cpp
@@ -0,0 +1,93 @@
+#include<iostream>
+#include<cstdio>
+#include<algorithm>
+#include<cstring>
+#include <queue>
+#include <map>
+using namespace std;
+const int maxn=50;
+int g[maxn][maxn], b[maxn][maxn], visit[maxn][maxn];
+int bf[maxn], gf[maxn];
+char ch[maxn], str[maxn];
+map<char,int>G,M;
+map<int,char>GG,MM;
+queue<int>q;
+int n, T;
+void init()
+{
+    G.clear(), M.clear(), GG.clear(), MM.clear();
+    memset(visit,0,sizeof(visit));
+    memset(bf,0,sizeof(bf));
+    while(!q.empty()) q.pop();
+}
+void find(int x)
+{
+    for(int i=n; i>=1; i--)
+    {
+        if(visit[x][i]) continue;
+        visit[x][i]=1;
+        int y=b[x][i];
+        if(!bf[y])
+        {
+            bf[y]=x;
+            gf[x]=y;
+            return ;
+        }
+        else
+        {
+            if(g[y][x]>g[y][ bf[y] ])
+            {
+                q.push(bf[y]);
+                bf[y]=x;
+                gf[x]=y;
+                return ;
+            }
+        }
+    }
+}
+void Solve()
+{
+    for(int i=1; i<=n; i++) q.push(i);
+    while(!q.empty())
+    {
+        int x=q.front();
+        q.pop();
+        find(x);
+    }
+    sort(ch+1,ch+n+1);
+    for(int i=1; i<=n; i++)
+        printf("%c %c\n",ch[i],MM[ gf[ G[ch[i]] ] ]);
+}
+int main()
+{
+    cin >> T;
+    while(T--)
+    {
+        cin >> n;
+        init();
+        for(int i=1; i<=n; i++) cin >> ch[i], G[ ch[i] ]=i, GG[i]=ch[i];
+        for(int i=1; i<=n; i++) cin >> ch[n+i],  M[ ch[n+i] ]=i, MM[i]=ch[n+i];
+        for(int i=1; i<=n; i++)
+        {
+            scanf("%s",str+1);
+            int x=G[ str[1] ];
+            for(int j=3; j<=n+2; j++)
+            {
+                int y=M[ str[j] ];
+                b[x][n-j+3]=y;
+            }
+        }
+        for(int i=1; i<=n; i++)
+        {
+            scanf("%s",str+1);
+            int x=M[ str[1] ];
+            for(int j=3; j<=n+2; j++)
+            {
+                int y=G[ str[j] ];
+                g[x][y]=n-j+3;
+            }
+        }
+        Solve();
+        if(T)puts("");
+    }
+}
diff --git a/HDOJ/1915_autoAC.cpp b/HDOJ/1915_autoAC.cpp
new file mode 100644
index 0000000..29f73fa
--- /dev/null
+++ b/HDOJ/1915_autoAC.cpp
@@ -0,0 +1,53 @@
+#include <iostream>
+#include <algorithm>
+using namespace std;
+char date[1000][1000];
+char strings[2000];
+int main ()
+{ 
+    int num;
+    int i,j;
+    int len;
+    int pos=0;
+    while(cin>>num)
+    { 
+        pos=0;
+        for(i=0;i<num;i++)
+            cin>>date[i];
+        len=strlen(date[0]);
+        int flag=0;
+        for(j=0;j<len;j++)
+        {
+            for(i=0;i<num;i++)
+            {
+                if(date[i][j]!='_')
+                    flag=1;            
+                if(flag==1)                  
+                {
+                    strings[pos]=date[i][j];
+                    pos++;
+                }
+            }
+        }
+        strings[pos]='\0';
+        reverse(strings,strings+pos);
+        for(i=0;i<pos;i++)
+        {
+            if(strings[i]=='_')
+            {
+                printf(" ");
+                strings[i]=' ';
+                continue;
+            }
+            else if(strings[i]=='\\')
+            {
+                cout<<'\n';
+                continue;
+            }
+            else 
+                cout<<strings[i];
+        }
+        cout<<endl<<endl;
+    }
+    return 0;
+}
diff --git a/HDOJ/1916_autoAC.cpp b/HDOJ/1916_autoAC.cpp
new file mode 100644
index 0000000..a62251d
--- /dev/null
+++ b/HDOJ/1916_autoAC.cpp
@@ -0,0 +1,58 @@
+#include <iostream>
+#include <cstdio>
+#include <cstring>
+using namespace std;
+int a[100];
+void solve(int n){
+    while(n>=10){
+        a[n%10]++;
+        n/=10;
+    }
+    a[n]++;
+}
+int main()
+{
+    int T;
+    cin>>T;
+    getchar();
+    while(T--){
+            memset(a,0,sizeof(a));
+            char name[600];int n;char tmp[60];char temp[100];
+            gets(name);
+            cin>>n>>tmp;
+            getchar();
+            int i=0;
+            while(i<n){
+                    gets(temp);
+                    if(temp[0]=='+'){
+                        int u,v,c;
+                        char t;
+                        sscanf(temp,"%c%d%d%d",&t,&u,&v,&c);
+                        i+=(v-u)/c+1;
+                        while(u<=v){
+                                solve(u);
+                                u+=c;
+                        }
+                    }
+                    else{
+                        i++;
+                        int u;
+                        sscanf(temp,"%d",&u);
+                        solve(u);
+                    }
+            }
+            cout<<name<<endl;
+            cout<<n<<" "<<tmp<<endl;
+            int tot=0;
+            for(i=0;i<=9;i++){
+                    tot+=a[i];
+                    cout<<"Make "<<a[i]<<" digit "<<i<<endl;
+            }
+            if(tot==1){
+                    cout<<"In total 1 digit"<<endl;
+            }
+            else
+                printf("In total %d digits\n",tot);
+    }
+    return 0;
+}
diff --git a/HDOJ/1920_autoAC.cpp b/HDOJ/1920_autoAC.cpp
new file mode 100644
index 0000000..aed5098
--- /dev/null
+++ b/HDOJ/1920_autoAC.cpp
@@ -0,0 +1,29 @@
+#include <iostream>
+#define ll long long
+using namespace std;
+ll gcd(ll a,ll b){
+    return b?gcd(b,a%b):a;
+}
+ll lcm(ll a,ll b){
+    return a*b/gcd(a,b);
+}
+int main()
+{
+    int T,n;
+    cin>>T;
+    while(T--){
+            cin>>n;
+            ll t=0;
+            cin>>t;
+            for(int i=2;i<=n;i++){
+                   ll tmp;
+                   cin>>tmp;
+                   t=lcm(t,tmp);
+            }
+            if(t<=1e9)
+                cout<<t<<endl;
+            else
+                cout<<"More than a billion."<<endl;
+    }
+    return 0;
+}
diff --git a/HDOJ/1922_autoAC.cpp b/HDOJ/1922_autoAC.cpp
new file mode 100644
index 0000000..59d6a06
--- /dev/null
+++ b/HDOJ/1922_autoAC.cpp
@@ -0,0 +1,107 @@
+#include <set>
+#include <map>
+#include <queue>
+#include <math.h>
+#include <vector>
+#include <string>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <iostream>
+#include <algorithm>
+#define eps 1e-8
+#define pi acos(-1.0)
+#define inf 107374182
+#define inf64 1152921504606846976
+#define lc l,m,tr<<1
+#define rc m + 1,r,tr<<1|1
+#define iabs(x)  ((x) > 0 ? (x) : -(x))
+#define clear1(A, X, SIZE) memset(A, X, sizeof(A[0]) * (SIZE))
+#define clearall(A, X) memset(A, X, sizeof(A))
+#define memcopy1(A , X, SIZE) memcpy(A , X ,sizeof(X[0])*(SIZE))
+#define memcopyall(A, X) memcpy(A , X ,sizeof(X))
+#define max( x, y )  ( ((x) > (y)) ? (x) : (y) )
+#define min( x, y )  ( ((x) < (y)) ? (x) : (y) )
+using namespace std;
+struct node1
+{
+    double x,y,l,r;
+    bool operator <(const node1 a)const
+    {
+        return l<a.l;
+    }
+} Point[1005];
+int main()
+{
+    int n,T,ans,cnt;
+    double d,temp,now,drift,r;
+    scanf("%d",&T);
+    while(T--)
+    {
+        scanf("%d%lf",&n,&d);
+        for(int i=0; i<n; i++)
+        {
+            scanf("%lf%lf",&Point[i].x,&Point[i].y);
+            temp=sqrt(Point[i].x*Point[i].x+Point[i].y*Point[i].y);
+            if(temp<=d)
+            {
+                n--;
+                i--;
+            }
+            else
+            {
+                if(Point[i].x==0)
+                {
+                    if(Point[i].y>0)now=0.5*pi;
+                    else now=1.5*pi;
+                }
+                else if(Point[i].y==0)
+                {
+                    if(Point[i].x>0)now=0;
+                    else now=pi;
+                }
+                else
+                {
+                    now=asin(iabs(Point[i].y)/temp);
+                    if(Point[i].x<0&&Point[i].y>=0)now=pi-now;
+                    else if(Point[i].x<=0&&Point[i].y<0)now+=pi;
+                    else if(Point[i].x>0&&Point[i].y<=0)now=2*pi-now;
+                }
+                drift=asin(d/temp);
+                //printf("*%lf %lf\n",now,drift);
+                Point[i].l=now-drift;
+                Point[i].r=now+drift;
+            }
+        }
+        if(n==0)
+        {
+            puts("0");
+            continue;
+        }
+        sort(Point,Point+n);
+        for(int i=n; i<2*n; i++)
+        {
+            Point[i]=Point[i-n];
+            Point[i].l+=2*pi;
+            Point[i].r+=2*pi;
+        }
+        ans=inf;
+        for(int i=0; i<n; i++)
+        {
+            r=Point[i].r;
+            cnt=1;
+            for(int j=i+1; j<n+i; j++)
+            {
+                if(r>Point[j].r)r=Point[j].r;
+                else if(r<Point[j].l)
+                {
+                    cnt++;
+                    r=Point[j].r;
+                }
+            }
+            ans=min(ans,cnt);
+        }
+        printf("%d\n",ans);
+    }
+    return 0;
+}
diff --git a/HDOJ/1923_autoAC.cpp b/HDOJ/1923_autoAC.cpp
new file mode 100644
index 0000000..71c4c6f
--- /dev/null
+++ b/HDOJ/1923_autoAC.cpp
@@ -0,0 +1,136 @@
+#include<stdio.h>
+#include<math.h>
+#include<algorithm>
+#include<iostream>
+using namespace std;
+#include<string.h>
+#define SSS 6000
+#define SIZE 1000000
+#define INF 2000000000
+#define NUM 200
+__int64 aa[300];
+__int64 rr[50000];
+int pri[NUM];
+int sub[SIZE];
+int pdsu(__int64 n)
+{
+    __int64 i;
+    if(n<=0||n==1 )
+        return 0;
+    if( n==2)
+        return 1;
+    else{
+        for(i=2; i*i<=n; i++)
+            if(n%i==0)
+                return 0;
+    }
+    return 1;
+}
+void sf(){
+    int temp,n;
+    for(int i=0;i<SIZE;i++)
+       sub[i]=1;
+    sub[0]=sub[1]=0;
+    for(int i=2;i<=sqrt(SIZE);i++){
+        if(sub[i]==1){
+           temp=2*i;
+           while(temp<=SIZE){
+                 sub[temp]=0;
+                 temp+=i;
+           }
+        }
+    }
+}
+int  init(){
+      int j = 0 ;
+      pri[j++] = 2 ;
+      pri[j++] = 3 ;
+      for( int i = 3 ; i<SSS ;i++ ){
+         if(sub[i]){
+                     pri[j++]=i;
+         }
+      }
+      return j;
+}
+int main(){
+    int num;
+    int t = 0 ;
+    __int64 res , next ,next2 ;
+    int b;
+    sf();
+    num = init();
+    sf();
+               for(int a = 1 ; a< 600 ; a++ ){
+                       for(int i = 0; i<NUM ;i++  ){
+                              res = pri[i] ;
+                              b = pri[i] - a;
+                              if(b == 0 ) continue;
+                              next = a * pri[i] + b ;
+                              if(next == pri[i]) continue;
+                              if(res * next > INF){
+                                      continue;
+                                      }
+                              if(next <0 )
+                                      continue;
+                              if(next >= SIZE){
+                                  if(!pdsu(next))
+                                      continue ;
+                              }
+                             else{
+                                      if(!sub[next])
+                                      continue ;
+                              }
+                              res = res * next;
+                              if(res >INF) continue;
+                            while(1){
+                               next2 = next * a +b;
+                               if(next2 == next ) break;
+                               if(res * next2 > INF){
+                                      break;
+                                      }
+                               if(next2 <0 )
+                                      break;
+                             if(next2 >= SIZE){
+                                      if(!pdsu(next2))
+                                      break ;
+                              }
+                              else{
+                                      if(!sub[next2])
+                                      break ;
+                              }
+                              res = res * next2;
+                              if(res >INF) break;
+                              rr[t++] = res ;
+                              next = next2 ;
+                            }
+                       }
+               }
+     for(int i = 0 ; i<t ;i++ )
+             for(int j = i+1 ; j <t ;j++)
+                     {
+                         if(rr[i]>rr[j]){
+                         int temp = rr[i];
+                         rr[i] = rr[j];
+                         rr[j] = temp;
+                         }
+                     }
+       int ccc = 0;
+      for(int i = 0 ; i <t ; i++)
+     {
+              if(rr[i]!= rr[i+1])
+              aa[ccc++]=rr[i];
+     }
+     int N;
+    __int64 zuo ,you ;
+            scanf("%d",&N);
+               while(N--){
+               scanf("%I64d%I64d",&zuo,&you);
+          int     ans = 0 ;
+         for(int i = 0 ; i <243 ;i++){
+                 if(zuo<=aa[i] && you>=aa[i])
+                ans++;
+         }
+               printf("%d\n",ans);
+               }
+    return 0 ;
+}
diff --git a/HDOJ/1924_autoAC.cpp b/HDOJ/1924_autoAC.cpp
new file mode 100644
index 0000000..959c4e7
--- /dev/null
+++ b/HDOJ/1924_autoAC.cpp
@@ -0,0 +1,103 @@
+#include<stdio.h>
+#include<string.h>
+#include<queue>
+#include<map>
+#include<string>
+#include<iostream>
+using namespace std;
+map<string,int>my;
+map<int,string>my2;
+int turn1(string ss1)
+{        
+    int num1=0;
+    int car=0;
+    int last=1000000;
+    for(int i=0;i<ss1.size();i++)
+    {
+        string ch="";
+        ch+=ss1[i];
+        if(my[ch]!=last)
+        {
+            if(my[ch]<last)
+                num1+=car;
+            else
+                num1-=car;
+            car=0;
+            car+=my[ch];
+        }
+        else
+            car+=my[ch]; 
+        last=my[ch];
+    }
+    num1+=car;
+    return num1;
+}
+string turn2(int n)
+{
+        string ans="";
+        for(int i=1;n;i*=10)
+        {
+            int nw=n%10;
+            n/=10;
+            if(nw<=3||i==1000)
+            {
+                while(nw--)
+                {
+                    ans=my2[i]+ans;
+                }
+            }
+            else if(nw>=3&&nw<=5)
+            {
+                int tem=5-nw;
+                ans=my2[i*5]+ans;//hou
+                while(tem--)
+                    ans=my2[i]+ans;
+            }
+            else if(nw<=8)
+            {
+                int tem=nw-5;
+                while(tem--)
+                    ans=my2[i]+ans;
+                ans=my2[i*5]+ans;
+            }
+            else
+            {
+                int tem=10-nw;
+                ans=my2[i*10]+ans;
+                while(tem--)
+                    ans=my2[i]+ans;
+            } 
+        }
+        return ans;
+}
+int main()
+{ 
+    my["I"]=1;
+    my["V"]=5;
+    my["X"]=10;
+    my["L"]=50;
+    my["C"]=100;
+    my["D"]=500;
+    my["M"]=1000;
+    my2[1]="I";
+    my2[5]="V";
+    my2[10]="X";
+    my2[50]="L";
+    my2[100]="C";
+    my2[500]="D";
+    my2[1000]="M";
+    string ss1,ss2;
+    int n;
+    int cas=1;
+    while(cin>>n,n)
+    {
+        int ans=0;
+        for(int i=0;i<n;i++)
+        {
+            cin>>ss1;
+            ans+=turn1(ss1);
+        }
+        cout<<"Case "<<turn2(cas++)<<": "<<turn2(ans)<<endl;
+    }
+    return 0;
+}
diff --git a/HDOJ/1925_autoAC.cpp b/HDOJ/1925_autoAC.cpp
new file mode 100644
index 0000000..254c966
--- /dev/null
+++ b/HDOJ/1925_autoAC.cpp
@@ -0,0 +1,55 @@
+#include<cstdio>  
+#include<cstring>  
+#include<iostream>  
+#include<cmath>  
+#include<vector>  
+using namespace std;  
+#define nMax  40  
+char s[nMax];  
+int m;  
+class P {  
+public:  
+    int x,y;  
+    P() {};  
+    P(int x,int y):x(x),y(y) {};  
+    void out() { printf("(%d,%d)\n",x,y); }  
+};  
+P rotate(P p,int k) {  
+    if(k==1) return P(p.y,-p.x);  // turn right  
+    else     return P(-p.y,p.x);  // turn left  
+}  
+P rotate(P T,P p,int k) {  
+    P tmp(p.x-T.x,p.y-T.y);  
+    P ret = rotate(tmp,k);  
+    return P(ret.x+T.x,ret.y+T.y);  
+}  
+P p[40];  
+int r[40];  
+P dfs(int m) {  
+    if(m==0) return p[0];  
+    long long  i=1LL;  
+    int j=1;  
+    while(m>=i) {  
+        i <<= 1;  
+        j += 1;  
+    }  
+    i >>= 1;j--;  
+    if(m==i) return p[j];  
+    m -= i;  
+    return rotate(p[j],dfs(i-m),r[j]);  
+}  
+int main() {  
+    int t;  
+    scanf("%d",&t);  
+    while(t--) {  
+        scanf("%s%d",s,&m);  
+        int l = strlen(s);  
+        p[0]=P(0,0);  
+        p[1]=P(1,0);  
+        for(int j=1,i=l-1;i>=0;i--,j++) r[j] = (s[i]=='U'?1:0);  
+        for(int i=2;i<=l+1;i++)  p[i] = rotate(p[i-1],p[0],r[i-1]);  
+        P ret = dfs(m);  
+        ret.out();  
+    }  
+    return 0;  
+}
diff --git a/HDOJ/1926_autoAC.cpp b/HDOJ/1926_autoAC.cpp
new file mode 100644
index 0000000..5c318d1
--- /dev/null
+++ b/HDOJ/1926_autoAC.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <cstdlib>
+#include <string>
+using namespace std;
+int tran[]={0,2,4,6,30,32,34,36,40,42,44,46,50,52,54,56,60,62,64,66};
+int main()
+{
+    int t,dig[15],pd,inp;
+    while(scanf("%d",&inp),inp!=0)
+    {
+        pd=0;
+        while(inp)
+        {
+            dig[pd++]=inp%20;
+            inp/=20;
+        }
+        bool flag=false;
+        if(pd>=8)
+            flag=true;
+        printf("%d",tran[dig[--pd]]);
+        for(t=pd-1;t>=0;t--)
+        {
+            if(t==6 && flag)
+                printf(",000,000");
+            printf(",%.3d",tran[dig[t]]);
+        }
+        printf("\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1930_autoAC.cpp b/HDOJ/1930_autoAC.cpp
new file mode 100644
index 0000000..cf4f7ec
--- /dev/null
+++ b/HDOJ/1930_autoAC.cpp
@@ -0,0 +1,81 @@
+#include <iostream>
+#include <algorithm>
+#include <cstring>
+#include <cmath>
+#include <cstdlib>
+using namespace std;
+__int64 carry[100],yuan[100];
+__int64 t,n,m1,m2,m3,m4,i,j;
+__int64 a,b,c,d;
+__int64 ex_gcd(__int64 a,__int64 b,__int64 &x, __int64 &y)
+{
+    if(b == 0)
+    {
+        x=1;
+        y=0;
+        return a;
+    }
+    __int64 result = ex_gcd(b,a%b,x,y);
+    __int64 t=x;
+    x=y;
+    y=t-a/b*y;
+    return result;
+}
+void  china(__int64 num)
+{
+    __int64 M,t,x,y,res=0;
+    M=m1*m2*m3*m4;
+    t=M/m1;
+    ex_gcd(t,m1,x,y);
+    res=(res+t*a*x)%M;
+    t=M/m2;
+    ex_gcd(t,m2,x,y);
+    res=(res+t*b*x)%M;
+    t=M/m3;
+    ex_gcd(t,m3,x,y);
+    res=(res+t*c*x)%M;
+    t=M/m4;
+    ex_gcd(t,m4,x,y);
+    res=(res+t*d*x)%M;
+    yuan[num]=(res%M+M)%M;
+}
+void chu(__int64 ji)
+{
+    if(ji == 27)printf(" ");
+    else  printf("%c",ji+'A'-1);
+}
+int main()
+{
+    scanf("%I64d",&t);
+    while(t--)
+    {
+        scanf("%I64d",&n);
+        scanf("%I64d %I64d %I64d %I64d",&m1,&m2,&m3,&m4);
+        for(i=0;i<n;i++)
+        {
+            scanf("%I64d",&carry[i]);
+            a=carry[i]/1000000;
+            b=carry[i]/10000%100;
+            c=carry[i]/100%100;
+            d=carry[i]%100;
+            china(i);
+            a=yuan[i]/10000;
+            b=yuan[i]/100%100;
+            c=yuan[i]%100;
+            if(i == n-1)
+            {
+                chu(a);
+                if(b != 27)chu(b);
+                if(c != 27)chu(c);
+            }
+            else 
+            {
+                chu(a);
+                chu(b);
+                chu(c);
+            }
+        }
+        puts("");
+    }
+    return 0;
+}
diff --git a/HDOJ/1934_autoAC.cpp b/HDOJ/1934_autoAC.cpp
new file mode 100644
index 0000000..0f6e54e
--- /dev/null
+++ b/HDOJ/1934_autoAC.cpp
@@ -0,0 +1,115 @@
+#include <iostream>
+#include <algorithm>
+#include <string.h>
+#include <cmath>
+#include <stdio.h>
+#include <queue>
+using namespace std;
+char mm[10] = {"ACMIP"};
+char a[10];
+char b[10];
+__int64 n;
+int check(char c[])
+{
+    int len = strlen(c);
+    bool isok2 = true;
+    bool isok1 = true;
+    for(int i=0;i<3;i++)
+    {
+        if(c[i] <'A' || c[i] >'Z')
+        {
+            isok1 = false;
+            break;
+        }
+    }
+    for(int i=3;i<7;i++)
+    {
+        if(c[i] <'0' || c[i] >'9')
+        {
+            isok1 = false;
+            break;
+        }
+    }
+    for(int i=0;i<5;i++)
+    {
+        if(c[i] <'B' || c[i] > 'Z' || c[i] == 'C' || c[i] == 'M' || c[i] == 'I' || c[i] == 'P')
+        {
+            isok2 = false;
+            break;
+        }
+    }
+    for(int i=5;i<7;i++)
+    {
+        if(c[i] <'0' || c[i] > '9')
+        {
+            isok2 = false;
+            break;
+        }
+    }
+    if(isok1) return 1;
+    else if(isok2) return 2;
+    return 0;
+}
+__int64 cal_old(char s[])
+{
+    __int64 sum = 0;
+    for(int i=0;i<3;i++)
+    {
+        sum = sum * 26 + (s[i]-'A');
+    }
+    for(int i=3;i<7;i++)
+    {
+        sum = sum *10 + (s[i] -'0');
+    }
+    return sum;
+}
+char dir[27] = {"BDEFGHJKLNOQRSTUVWXYZ"};
+int cal_new(char s[])
+{
+    __int64 sum = 0;
+    for(int i=0;i<5;i++)
+    {
+        int res = -1;
+        while(s[i] != dir[++res]);
+        sum = sum *21 + res;
+    }
+    int tmp = 0;
+    for(int i=5;i<7;i++)
+    {
+        tmp  = tmp* 10 + (s[i] - '0');
+    }
+    sum *= 100;
+    sum += tmp;
+    sum = sum + cal_old("ZZZ99999") + 1;
+    return sum;
+}
+int main()
+{
+    while(~scanf("%s %s %d",a,b,&n))
+    {
+        getchar();
+        if(a[0] == '*' && b[0] == '*' && n == 0) break;
+        int res = check(a);
+        int tmp = check(b);
+        if(res == 0 || tmp == 0)
+        {
+            printf("N\n");
+            continue;
+        }
+        __int64 sum_a = 0;
+        __int64 sum_b = 0;
+        if(res == 1) 
+            sum_a = cal_old(a);
+        else 
+            sum_a = cal_new(a);
+        if(tmp == 1)
+            sum_b = cal_old(b);
+        else 
+            sum_b = cal_new(b);
+        if(sum_b > sum_a && sum_a + n >= sum_b)
+            printf("Y\n");
+        else 
+            printf("N\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1936_autoAC.cpp b/HDOJ/1936_autoAC.cpp
new file mode 100644
index 0000000..4f4763d
--- /dev/null
+++ b/HDOJ/1936_autoAC.cpp
@@ -0,0 +1,93 @@
+#include <iostream>
+#include <cstdio>
+#include <cstring>
+#include <algorithm>
+using namespace std;
+int n, m;
+string A[1050], B[1050];
+struct pos
+{
+    int L, R;
+} p[10050];
+bool cmp(pos A, pos B)
+{
+    if (A.L != B.L)
+    {
+        return A.L < B.L;
+    }
+    return A.R < B.R;
+}
+void solve()
+{
+    int cnt = 0;
+    for (int i = 1; i <= m; i++)
+    {
+        int lenB = B[i].length();
+        int q = 1;
+        for (int j = 0; j < lenB; j++)
+        {
+            for (int k = 1; k <= n; k++)
+            {
+                int lenA = A[k].length();
+                if (j+lenA-1 >= lenB) continue;
+                if (A[k][0] == B[i][j] && A[k][lenA-1] == B[i][j+lenA-1])
+                {
+                    bool ok = true;
+                    for (int l = 0; l < lenA; l++)
+                    {
+                        if (A[k][l] != B[i][j+l])
+                        {
+                            ok = false;
+                            break;
+                        }
+                    }
+                    if (ok)
+                    {
+                        p[q].L = j;
+                        p[q++].R = j+lenA-1;
+                    }
+                }
+            }
+        }
+        p[0].L = p[0].R = -100;
+        sort(p+1, p+q, cmp);
+        for (int i = q-1; i >= 1; i--)
+        {
+            if (p[i].L > p[i-1].R)
+            {
+                cnt++;
+            }
+            else
+            {
+                for (int j = i-1; j >= 1; j--)
+                {
+                    if (p[i].L <= p[j].R) ;
+                    else
+                    {
+                        i = j+1;
+                        cnt++;
+                        break;
+                    }
+                }
+            }
+        }
+    }
+    cout << cnt << endl;
+}
+int main()
+{
+    while (cin >> n >> m && (n && m))
+    {
+        for (int i = 1; i <= n; i++)
+        {
+            cin >> A[i];
+        }
+        getchar();
+        for (int i = 1; i <= m; i++)
+        {
+            getline(cin, B[i]);
+        }
+        solve();
+    }
+    return 0;
+}
diff --git a/HDOJ/1937_autoAC.cpp b/HDOJ/1937_autoAC.cpp
new file mode 100644
index 0000000..5a8dd45
--- /dev/null
+++ b/HDOJ/1937_autoAC.cpp
@@ -0,0 +1,67 @@
+#include<iostream>
+#include<cstdio>
+#include<cstring>
+using namespace std;
+const int INF=1<<31-1;
+char a[310][310];
+int mmap[310][310];
+int r,c,k;
+void chuli()
+{
+    int i,j;
+    for(i=1;i<=r;i++)
+        mmap[i][1]=(a[i][1]=='.');
+    for(j=1;j<=c;j++)
+        mmap[1][j]=(a[1][j]=='.');
+    for(i=1;i<=r;i++)
+    {
+        for(j=1;j<=c;j++)
+        {
+            mmap[i][j]=(mmap[i-1][j]+mmap[i][j-1]-mmap[i-1][j-1]+(a[i][j]=='.'));
+        }
+    }
+}
+int check(int x1,int y1,int x2,int y2)
+{
+    if(mmap[x2][y2]+mmap[x1-1][y1-1]-mmap[x1-1][y2]-mmap[x2][y1-1]>=k)
+        return 0;
+    else
+        return 1;
+}
+int main()
+{
+    while(scanf("%d%d%d",&r,&c,&k)!=EOF)
+    {
+        memset(mmap,0,sizeof(mmap));
+        if(r==c&&r==k&&k==0)
+        {
+            break;
+        }
+        int i,j;
+        for(i=1;i<=r;i++)
+             scanf("%s",a[i]+1);
+        chuli();
+        int t1,t2;
+        int min=INF;
+        for(i=1;i<=r;i++)
+        {
+            for(j=i;j<=r;j++)
+            {
+                for(t1=1,t2=1;t1<=c;t1++)
+                {
+                    while(check(i,t1,j,t2)==1&&t2<c)
+                       {
+                           t2++;
+                       }
+                    if(check(i,t1,j,t2)==0)
+                    {
+                        if(min>(j-i+1)*(t2-t1+1))
+                        min=(j-i+1)*(t2-t1+1);
+                    }
+                }
+            }
+        }
+        printf("%d\n",min);
+    }
+    return 0;
+}
diff --git a/HDOJ/1939_autoAC.cpp b/HDOJ/1939_autoAC.cpp
new file mode 100644
index 0000000..826f130
--- /dev/null
+++ b/HDOJ/1939_autoAC.cpp
@@ -0,0 +1,26 @@
+#include<stdio.h>
+#include<string.h>
+#include<iostream>
+#include<algorithm>
+using namespace std;
+int t1[10000],t2[10000];
+int main(){
+     int a,b;
+     while(scanf("%d%d",&a,&b)!=EOF){
+            if(a==0&&b==0)
+            break;
+        memset(t1,0,sizeof(t1));
+        memset(t2,0,sizeof(t2));
+        for(int i=0;i<a;i++)
+            scanf("%d",&t1[i]);
+        for(int i=0;i<b;i++)
+            scanf("%d",&t2[i]);
+        sort(t1,t1+a);
+        sort(t2,t2+b);
+        if(t1[0]<t2[1])
+            printf("Y\n");
+        else
+            printf("N\n");       
+     }     
+     return 0;
+}
diff --git a/HDOJ/1940_autoAC.cpp b/HDOJ/1940_autoAC.cpp
new file mode 100644
index 0000000..468d7b5
--- /dev/null
+++ b/HDOJ/1940_autoAC.cpp
@@ -0,0 +1,66 @@
+#include<iostream>
+#include<string.h>
+#include<math.h>
+using namespace std;
+int t, p;
+int tp[200], fa[200], ac[200];
+int min(int a, int b){
+    if(a<b) return a;return b;
+} 
+int max(int a, int b){
+    if(a>b) return a;return b;
+}
+void solve()
+{
+    for(int i = 1; i <= t; i++)
+    {
+        tp[i] = 0; fa[i] = 0; ac[i] = 0;
+    }
+    for(int i = 1; i <= t; i++)
+        for(int j = 1; j <= p; j++)
+        {
+            int x;
+            int y;
+            char s[5];
+            cin >> x >> s;
+            if(s[1] != '-'){
+                ac[i]++;
+                fa[i]+=x;
+                y = 0;
+                for(int k = 1; k <strlen(s); k++)
+                    y = y * 10 + s[k] - 48;
+                tp[i] += y;
+            }
+        }
+        int least = 1;
+        int biggest = 2000000000;
+        for(int i = 1; i <= t; i++)
+            for(int j = 1; j <= t; j++)
+                if(i != j && ac[i] == ac[j] && fa[i] != fa[j])
+                {
+                    double x = (tp[i] - tp[j] +0.0) / (fa[j]-fa[i] +0.0);
+                    if(x-20 < 1e-6 && 20-x < 1e-6)
+                    {
+                        biggest = 20;least = 20;
+                    }
+                    else if(x > 20)
+                        biggest = min(biggest, int(floor(x-1e-2)));
+                    else
+                        least = max(least, int(ceil(x + 1e-2)));
+                }
+        cout << least <<' ';
+        if(biggest == 2000000000)
+            cout << '*';
+        else
+            cout << biggest;
+        cout << endl; 
+}
+int main()
+{
+    cin >> t >> p;
+    while(t!=0 || p != 0)
+    {
+        solve();
+        cin >> t >> p;
+    }
+}
diff --git a/HDOJ/1941_autoAC.cpp b/HDOJ/1941_autoAC.cpp
new file mode 100644
index 0000000..fbb383a
--- /dev/null
+++ b/HDOJ/1941_autoAC.cpp
@@ -0,0 +1,59 @@
+#include<stdio.h>
+#include<string.h>
+#include<algorithm>
+#define MAXD 50010
+#define MAXM 200010
+#define INF 0x3f3f3f3f
+int N, M, first[MAXD], e, next[MAXM], v[MAXM], dgr[MAXD], isin[MAXD], r[MAXD];
+bool cmp(const int &x, const int &y)
+{
+    return dgr[x] < dgr[y];    
+}
+void add(int x, int y)
+{
+    v[e] = y;
+    next[e] = first[x], first[x] = e ++;    
+}
+void init()
+{
+    int i, x, y;
+    memset(first, -1, sizeof(first[0]) * (N + 1)), e = 0;
+    memset(dgr, 0, sizeof(dgr[0]) * (N + 1));
+    for(i = 0; i < M; i ++)
+    {
+        scanf("%d%d", &x, &y);
+        ++ dgr[x], ++ dgr[y];
+        add(x, y), add(y, x);
+    }
+}
+void solve()
+{
+    int i, j, x, cnt = 0, min = INF;
+    memset(isin, 0, sizeof(isin[0]) * (N + 1));
+    for(i = 1; i <= N; i ++) r[i] = i;
+    std::sort(r + 1, r + 1 + N, cmp);
+    for(i = 1; i <= N; i ++)
+        if(!isin[x = r[i]])
+        {
+            for(j = first[x]; j != -1; j = next[j])
+                -- dgr[v[j]], isin[v[j]] = 1;
+        }
+    for(i = 1; i <= N; i ++)
+        if(isin[x = r[i]])
+            ++ cnt, min = std::min(min, dgr[x]);
+    printf("%s\n", cnt == min + 1 ? "Y" : "N");
+}
+int main()
+{
+    while(scanf("%d%d", &N, &M), N)
+    {
+        if(M == 0)
+        {
+            printf("Y\n");
+            continue;    
+        }
+        init();
+        solve();    
+    }
+    return 0;    
+}
diff --git a/HDOJ/1943_autoAC.cpp b/HDOJ/1943_autoAC.cpp
new file mode 100644
index 0000000..1ac5d8b
--- /dev/null
+++ b/HDOJ/1943_autoAC.cpp
@@ -0,0 +1,20 @@
+#include<stdio.h>
+#include<math.h>
+#include<iostream>
+using namespace std;
+const double PI=acos(-1.0);
+#define eps 1e-3
+int main()
+{
+    int T;
+    double D,d,s;
+    scanf("%d",&T);
+    while(T--)
+    {
+        scanf("%lf%lf%lf",&D,&d,&s);
+       double temp=asin((d+s)/(D-d));
+       double tt=(2*PI)/(2*temp);
+       printf("%d\n",(int)tt);
+    }
+    return 0;
+}
diff --git a/HDOJ/1944_autoAC.cpp b/HDOJ/1944_autoAC.cpp
new file mode 100644
index 0000000..1f6ca90
--- /dev/null
+++ b/HDOJ/1944_autoAC.cpp
@@ -0,0 +1,46 @@
+#include<iostream>
+#include<string.h>
+#include<algorithm>
+using namespace std; 
+int  s[101];
+int tt[10001];
+int g(int x , int  k)
+{
+    int mex[101];
+    memset(mex,0,sizeof(mex));
+    if(tt[x]!=-1) return tt[x]; 
+    if(x-s[0]<0) return tt[x]=0;
+    for(int i=0;i<k && x-s[i]>=0;i++) 
+    { 
+        mex[g(x-s[i] , k)]=1;  
+    }
+    for(int i=0;;i++) 
+    if(!mex[i])  return tt[x]=i;
+}
+int main()
+{
+    int  k ;
+    int n, t ,a , ans;
+    while(scanf("%d",&k)!=EOF && k)
+    {
+        memset(tt,-1,sizeof(tt));
+        tt[0]=0;
+        for(int i=0;i<k;i++) scanf("%d",&s[i]);
+        sort(s,s+k);
+        scanf("%d",&t); 
+        while(t--)
+        {
+            ans=0;
+            scanf("%d",&n);
+            for(int i=0;i<n;i++) 
+            {
+                scanf("%d",&a);  
+                ans^=g(a , k);
+            }  
+            if(!ans)  printf("L"); 
+            else printf("W");
+        }
+        printf("\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1945_autoAC.cpp b/HDOJ/1945_autoAC.cpp
new file mode 100644
index 0000000..371850b
--- /dev/null
+++ b/HDOJ/1945_autoAC.cpp
@@ -0,0 +1,42 @@
+#include<stdio.h>
+int H[2][2]={{1,1},{1,-1}};
+long long dfs(long long x,long long y)
+{
+    if(x<2&&y<2)return H[x][y];
+    int i=0,j=0;
+    if(x>=2)
+    {
+        i=1;
+        while(i*2<=x)
+            i*=2;
+        x-=i;
+    }
+    if(y>=2)
+    {
+        j=1;
+        while(j*2<=y)
+            j*=2;
+        y-=j;
+    }
+    if(i==j)return -dfs(x,y);
+    else if(i>j)return dfs(x,y+j);
+    else return dfs(x+i,y);
+}
+int main()
+{
+    int t;
+    scanf("%d",&t);
+    while(t--)
+    {
+        long long n,x,y,w,h,i,j;
+        scanf("%I64d%I64d%I64d%I64d%I64d",&n,&x,&y,&w,&h);
+        for(i=y;i<y+h;i++)
+        {
+            for(j=x;j<x+w-1;j++)
+                printf("%d ",dfs(i,j));
+            printf("%d\n",dfs(i,j));
+        }
+        printf("\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1949_autoAC.cpp b/HDOJ/1949_autoAC.cpp
new file mode 100644
index 0000000..a62bd14
--- /dev/null
+++ b/HDOJ/1949_autoAC.cpp
@@ -0,0 +1,72 @@
+#include <iostream>
+#include <cstdio>
+#include <cstring>
+using namespace std;
+#define maxn 218
+#define max(a,b)    a>b?a:b;
+#define min(a,b)    a>b?b:a;
+#define inf 0x3f3f3f3f
+int dp[maxn][maxn][maxn];
+char map[maxn][maxn];
+int main()
+{
+    int t;
+    scanf("%d",&t);
+    while(t--)
+    {
+        memset(map,'#',sizeof(map));
+        int r,c;
+        scanf("%d%d",&c,&r);
+        for(int i = 0;i < r;i++)
+            scanf("%s",map[i]);
+        int len = r+c-2;
+        for(int i = 0;i <= len;i++)
+            for(int j = 0;j < r;j++)
+                for(int k = 0;k < r;k++)
+                    dp[i][j][k] = -inf;
+        dp[0][0][0] = (map[0][0] == '*'?1:0);
+        for(int i = 0;i <= c;i++)    map[r][i] = '#';
+        for(int i = 0;i <= r;i++)    map[i][c] = '#';
+        for(int k = 0;k < len;k++)
+        {
+            for(int i = 0;i <= k;i++)
+            {
+                if(i >= r)    break;
+                if(k - i >= c)    continue;
+                for(int j = 0;j <= k;j++)
+                {
+                    if(j >= r)    break;
+                    if(k - j >= c)    continue;
+                    if(dp[k][i][j] < 0 || map[i][k-i] == '#' || map[j][k-j] == '#')    continue;
+                    if(map[i+1][k-i] != '#' && map[j+1][k-j] != '#')
+                    {
+                        int key = dp[k][i][j]+(map[i+1][k-i]=='*')+(map[j+1][k-j]=='*');
+                        if(i == j && map[i+1][k-i] == '*')    key--;                
+                        dp[k+1][i+1][j+1] = max(dp[k+1][i+1][j+1],key);
+                    }
+                    if(map[i+1][k-i] != '#' && map[j][k+1-j] != '#')
+                    {
+                        int key = dp[k][i][j]+(map[i+1][k-i]=='*')+(map[j][k+1-j]=='*');
+                        if(i+1 == j && map[i+1][k-i] == '*')    key--;
+                        dp[k+1][i+1][j] = max(dp[k+1][i+1][j],key);
+                    }
+                    if(map[i][k+1-i] != '#' && map[j+1][k-j] != '#')
+                    {
+                        int key = dp[k][i][j]+(map[i][k+1-i]=='*')+(map[j+1][k-j]=='*');
+                        if(i == j+1 && map[i][k+1-i] == '*')    key--;
+                        dp[k+1][i][j+1] = max(dp[k+1][i][j+1],key);
+                    }
+                    if(map[i][k+1-i] != '#' && map[j][k+1-j] != '#')
+                    {
+                        int key = dp[k][i][j]+(map[i][k+1-i]=='*')+(map[j][k+1-j]=='*');
+                        if(i == j && map[i][k+1-i] == '*')    key--;            
+                        dp[k+1][i][j] = max(dp[k+1][i][j],key);
+                    }
+                }
+            }
+        }
+        if(dp[r+c-2][r-1][r-1] < 0)    dp[r+c-2][r-1][r-1] = 0;
+        printf("%d\n",dp[r+c-2][r-1][r-1]);
+    }
+    return 0;
+}
diff --git a/HDOJ/1950_autoAC.cpp b/HDOJ/1950_autoAC.cpp
new file mode 100644
index 0000000..2ed75fb
--- /dev/null
+++ b/HDOJ/1950_autoAC.cpp
@@ -0,0 +1,36 @@
+#include<cstdio>
+#include<algorithm>
+using namespace std;
+int a[44000];
+int main()
+{
+    int t;
+    int m;
+    int i;
+    int position;
+    int n;
+    int top;
+    scanf("%d",&t);
+    while(t--)
+    {
+        scanf("%d",&n);
+        scanf("%d",&a[0]);
+        top=0;
+        for(i=1;i<n;i++)
+        {
+            scanf("%d",&m);
+            if(m>a[top])
+            {
+                top++;
+                a[top]=m;
+            }
+            else
+            {
+                position=lower_bound(a,a+top,m)-a;
+                a[position]=m;
+            }
+        }
+        printf("%d\n",top+1);
+    }
+    return 0;
+}
diff --git a/HDOJ/1951_autoAC.cpp b/HDOJ/1951_autoAC.cpp
new file mode 100644
index 0000000..f7e1d46
--- /dev/null
+++ b/HDOJ/1951_autoAC.cpp
@@ -0,0 +1,74 @@
+#include <iostream>
+#include <cstdio>
+#include <algorithm>
+#include <memory.h>
+#include <cmath>
+#include <set>
+#include <bitset>
+#include <vector>
+using namespace std;
+const int BORDER = (1<<20)-1;
+const int MAXSIZE = 37;
+const int MAXN = 250100;
+const int INF = 0x4ffffff;
+#define CLR(x,y) memset(x,y,sizeof(x))
+#define ADD(x) x=((x+1)&BORDER)
+#define IN(x) scanf("%d",&x)
+#define OUT(x) printf("%d\n",x)
+#define MIN(m,v) (m)<(v)?(m):(v)
+#define MAX(m,v) (m)>(v)?(m):(v)
+#define ABS(x) (x>0?x:-x)
+bitset<MAXSIZE> state[MAXSIZE];
+int n,cur_n;
+int init()
+{
+    int i,j;
+    for(i = 0; i < MAXSIZE; ++i)
+        state[i].reset();
+    return 0;
+}
+bool dfs(const int& match,const int& cur,const int& sel,
+        bitset<MAXSIZE> mask)
+{
+    if(mask.count() < match)
+        return false;
+    else if(sel == match)
+        return true;
+    else if(sel + 36 - cur < match)
+        return false;
+    return dfs(match,cur+1,sel,mask) || 
+        dfs(match,cur+1,sel+1,mask&state[cur]);
+}
+int input()
+{
+    int i,a,b;
+    IN(n);
+    for(i = 0; i < n; ++i)
+    {
+        scanf("%d%d",&a,&b);
+        state[a-1].set(b-1);
+    }
+    return 0;
+}
+int work()
+{
+    int i,j;
+    bitset<MAXSIZE> mask;
+    mask.set();
+    for(cur_n = 2; cur_n*cur_n <= n&& dfs(cur_n,0,0,mask); ++cur_n)
+        ;
+    OUT(cur_n-1);
+    return 0;
+}
+int main()
+{
+    int i,j,tt;
+    IN(tt);
+    while(tt--)
+    {
+        init();
+        input();
+        work();
+    }
+    return 0;
+}
diff --git a/HDOJ/1954_autoAC.cpp b/HDOJ/1954_autoAC.cpp
new file mode 100644
index 0000000..fe62b0e
--- /dev/null
+++ b/HDOJ/1954_autoAC.cpp
@@ -0,0 +1,71 @@
+#include <iostream>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <algorithm>
+using namespace std;
+#define maxn 3005
+struct Tree
+{
+    int l, r;
+} tree[maxn];
+char st1[maxn], st2[maxn], temp[maxn], st[maxn];
+bool operator<(const Tree &a, const Tree &b)
+{
+    int len = min(a.r - a.l, b.r - b.l);
+    for (int i =0; i < len; i++)
+        if (st[a.l + i] != st[b.l + i])
+            return st[a.l + i] < st[b.l + i];
+    return a.r - a.l < b.r - b.l;
+}
+void make(int l, int r, Tree *tree)
+{
+    int zcount =0;
+    int tcount =0;
+    int s = l;
+    for (int i = l; i < r; i++)
+    {
+        if (st[i] =='0')
+            zcount++;
+        else
+            zcount--;
+        if (zcount ==0)
+        {
+            make(s +1, i, &tree[tcount]);
+            tree[tcount].l = s;
+            tree[tcount].r = i +1;
+            tcount++;
+            s = i +1;
+        }
+    }
+    sort(tree, tree + tcount);
+    s = l;
+    for (int i =0; i < tcount; i++)
+    {
+        for (int j = tree[i].l; j < tree[i].r; j++)
+            temp[j - tree[i].l + s] = st[j];
+        s += tree[i].r - tree[i].l;
+    }
+    for (int i = l; i < r; i++)
+        st[i] = temp[i];
+}
+int main()
+{
+    int t;
+    scanf("%d", &t);
+    getchar();
+    while (t--)
+    {
+        gets(st);
+        make(0, strlen(st), tree);
+        strcpy(st1, st);
+        gets(st);
+        make(0, strlen(st), tree);
+        strcpy(st2, st);
+        if (strcmp(st1, st2) ==0)
+            printf("same\n");
+        else
+            printf("different\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1955_autoAC.cpp b/HDOJ/1955_autoAC.cpp
new file mode 100644
index 0000000..644ad7a
--- /dev/null
+++ b/HDOJ/1955_autoAC.cpp
@@ -0,0 +1,84 @@
+#include<iostream>
+#include<string.h> 
+using namespace std;
+int n,m;
+int cnt=0;
+typedef struct e{
+    int data;
+    e *next;
+}e;
+e edge[401];
+int v[401];
+int a[402],b[402];
+int dp[402][402];
+void dfs(int s){
+    v[s]=1;
+    if(s<=n)
+        a[cnt]++;
+    else
+        b[cnt]++;
+    e *p=edge[s].next;
+    while(p){
+        if(!v[p->data])
+            dfs(p->data);
+        p=p->next;
+    }
+}
+void solve(){
+    int i,j,k;
+    memset(dp,0,sizeof(dp));
+    dp[0][0]=1;
+    for(k=1;k<=cnt;k++)
+        for(i=n/2;i>=a[k];i--)
+            for(j=n/2;j>=b[k];j--)
+                dp[i][j]=dp[i][j]||dp[i-a[k]][j-b[k]];
+    for(i=n/2;i>=0;i--)
+        if(dp[i][i])
+            break;
+    cout<<i<<endl;
+}
+void bfs(){
+    int i,j,k;
+    cnt=0;
+    memset(v,0,sizeof(v));
+    memset(a,0,sizeof(a));
+    memset(b,0,sizeof(b));
+    for(i=1;i<=2*n;i++)
+        if(v[i]==0)
+        {
+            cnt++;
+            dfs(i);
+        }
+}
+void read(){
+    int i,j,k,s,t;
+    int K;
+    cin>>K;
+    while(K--)
+    {
+        cin>>n>>m;
+        for(i=1;i<=2*n;i++)
+        {
+            edge[i].data=i;
+            edge[i].next=0;
+        }
+        for(i=1;i<=m;i++)
+        {
+            cin>>j>>k;
+            e *p=new e;
+            p->data=k+n;
+            p->next=edge[j].next;
+            edge[j].next=p;
+            e *q=new e;
+            q->data=j;
+            q->next=edge[k+n].next;
+            edge[k+n].next=q;
+        }
+        bfs();
+        solve();
+    }
+}
+int main(){
+    read();
+    return 0;
+}
diff --git a/HDOJ/1956_autoAC.cpp b/HDOJ/1956_autoAC.cpp
new file mode 100644
index 0000000..6945e7f
--- /dev/null
+++ b/HDOJ/1956_autoAC.cpp
@@ -0,0 +1,127 @@
+#include <iostream>
+#include <cstdio>
+#include <cstring>
+#include <cmath>
+#include <algorithm>
+#include <queue>
+using namespace std;
+#define N 205
+#define M 4050
+#define inf 0x3f3f3f3f
+struct edge
+{
+    int v,flow,next;
+};
+edge e[M];
+int head[N],total;
+int in[N];//搴
+int dis[N];
+void init()
+{
+    memset(head,-1,sizeof(head));
+    memset(in,0,sizeof(in));
+    total=0;
+}
+void add(int u,int v,int val)
+{
+    e[total].v=v,e[total].flow=val,e[total].next=head[u],head[u]=total++;
+    e[total].v=u,e[total].flow=0,e[total].next=head[v],head[v]=total++;
+}
+bool bfs(int st,int en)
+{
+    memset(dis,0,sizeof(dis));
+    queue<int>q;
+    q.push(st);
+    dis[st]=1;
+    while(!q.empty())
+    {
+        int u=q.front();q.pop();
+        if(u==en) return true;
+        for(int i=head[u];i>=0;i=e[i].next)
+        {
+            int v=e[i].v;
+            if(e[i].flow && dis[v]==0)
+            {
+                dis[v]=dis[u]+1;
+                q.push(v);
+            }
+        }
+    }
+    return false;
+}
+int dfs(int u,int cur_flow,int en)
+{
+    if(u==en) return cur_flow;
+    int sum=0;
+    for(int i=head[u];i>=0 && sum<cur_flow;i=e[i].next)
+    {
+        int v=e[i].v;
+        if(e[i].flow >0 && dis[v]==dis[u]+1)
+        {
+            int tmp=dfs(v,min(cur_flow-sum,e[i].flow),en);
+            e[i].flow-=tmp;
+            e[i^1].flow+=tmp;
+            sum+=tmp;
+        }
+    }
+    if(!sum) dis[u]=0;
+    return sum;
+}
+int dinic(int st,int en)
+{
+    int ans=0;
+    int tmp;
+    while(bfs(st,en))
+    {
+        while(tmp=dfs(st,inf,en))
+            ans+=tmp;
+    }
+    return ans;
+}
+int main()
+{
+    int  tcase,n,m,sum,flag;
+    int u,v,c;
+    scanf("%d",&tcase);
+    while(tcase--)
+    {
+        init();
+        sum=0;
+        scanf("%d%d",&n,&m);
+        while(m--)
+        {
+            scanf("%d%d%d",&u,&v,&c);
+            --in[u],++in[v];
+            if(!c)
+                add(u,v,1);
+        }
+        flag=true;
+        for(int i=1;i<=n;i++)
+        {
+            if(in[i]&1)
+            {
+                flag=false;
+                break;
+            }
+        }
+        if(flag)
+        {
+            for(int i=1;i<=n;i++)
+            {
+                if(in[i]<0)
+                    add(0,i,(-in[i])>>1);
+                if(in[i]>0)
+                {
+                    add(i,n+1,in[i]>>1);
+                    sum+=(in[i]>>1);
+                }
+            }
+            flag=(sum==dinic(0,n+1));
+        }
+        if(flag)
+            puts("possible");
+        else
+            puts("impossible");
+    }
+    return 0;
+}
diff --git a/HDOJ/1957_autoAC.cpp b/HDOJ/1957_autoAC.cpp
new file mode 100644
index 0000000..5554aed
--- /dev/null
+++ b/HDOJ/1957_autoAC.cpp
@@ -0,0 +1,201 @@
+#include <iostream>
+#include <cstdio>
+#include <cstring>
+#include <string>
+#include <algorithm>
+#include <cmath>
+#include <vector>
+#include <map>
+#include <bitset>
+#include <ctime>
+#include <queue>
+#include <complex>
+using namespace std;
+#define clr(a) memset(a,0,sizeof(a));
+const int maxsize=1000007,inf=0x7fffffff;
+template<class T>
+void show(T a[],int n){
+    for(int i=0;i<n;i++){
+        cout<<a[i]<<" ";
+    }
+    cout<<endl;
+}
+template<class T>
+void show(const vector<T>& t){
+    for(int i=0;i<t.size();i++){
+        cout<<t[i]<<" ";
+    }
+    cout<<endl;
+}
+inline int randin(const int& l,const int& r)
+{   return rand()%(r-l+1)+l;    }
+struct node{
+    int a,b;
+    node(){
+        a=b=0;
+    }
+};
+char isprime[maxsize];
+char  tocombine[maxsize];
+void init(){
+int i;
+for(i=0;i<maxsize;i++)
+isprime[i]=1;
+isprime[0]=0;
+for(i=2;i<maxsize;i++){
+tocombine[i]=0;
+if(isprime[i]){
+int k=i;
+while(isprime[k]){tocombine[i]++; k--;}
+for(int j=i*2;j<maxsize;j+=i){
+isprime[j]=0;
+}
+}
+}
+}
+struct state{
+int s[11];
+int cnt;
+state(){cnt=0;}
+void sortme(){sort(s,s+cnt);}
+};
+bool operator < (const state& a,const state& b){
+if(a.cnt!=b.cnt) return a.cnt <b.cnt;
+for(int i=0;i<a.cnt;i++){
+if(a.s[i]!=b.s[i]){
+return a.s[i]<b.s[i];
+}
+}
+return false;
+}
+bool operator == (state a,state b){
+if(a.cnt!=b.cnt) return false;
+for(int i=0;i<a.cnt;i++){
+if(a.s[i]!=b.s[i]){
+return false;
+}
+}
+return true;
+}
+const int hashsize =maxsize/3;
+template<class Tk,class Tv>
+class hashmap{
+struct hashnode{
+Tk key;
+Tv value;
+hashnode *next;
+};
+hashnode mem[hashsize];
+int mem_end;
+hashnode *entry[hashsize];
+hashnode* getmem(){mem_end++; return mem+mem_end-1;}
+int culhash(const state& a){
+int h =0;
+for(int i=0;i<a.cnt;i++){
+h=h*1007+a.s[i];
+}
+return (h%hashsize+hashsize)%hashsize;
+}
+public:
+hashmap(){
+clr(entry);mem_end=0;
+}
+bool get(const Tk& k,Tv& v){
+int h=culhash(k);
+hashnode *p=entry[h];
+for(;p;p=p->next){
+if(p->key==k){
+v=p->value;
+return true;
+}
+}
+return false;
+}
+bool insert(const Tk& key,const Tv& v){
+if(mem_end>=hashsize)return false;
+int h=culhash(key);
+hashnode *p=getmem();
+p->key=key;p->value=v;p->next=entry[h];
+entry[h]=p;
+return true;
+}
+};
+hashmap<state,node> hhh;
+int maxstate;
+node get(state s){
+sort(s.s,s.s+s.cnt);
+state os =s;
+node ret ;
+if(!hhh.get(s,ret)){
+if(s.cnt==1&&isprime[s.s[0]]){
+s.s[0]--;
+ret =get(s);
+swap(ret.a,ret.b);
+ret.a++;
+}else{
+int i,j,k=0,l;
+for(i=0;i<s.cnt;i++){
+if(isprime[s.s[i]]){
+l=tocombine[s.s[i]];
+k+=l;
+s.s[i]-=l;
+}
+if(s.s[i]==0){
+s.cnt--;
+swap(s.s[i],s.s[s.cnt]);
+i--;
+}
+}
+if(s.cnt){
+{
+for(i=0;i<s.cnt;i++){
+int t=s.s[i];
+if(i&&t==s.s[i-1]) continue;
+int st=sqrt(s.s[i])+2;
+for(j=2;j<st;j++){
+if(t%j==0){
+state ns =s;
+ns.cnt++;
+ns.s[i]=j;
+ns.s[s.cnt]=t/j;
+node tmp =get(ns);
+swap(tmp.a,tmp.b);
+if(tmp.a>ret.a){
+ret=tmp;
+}
+}
+}
+}
+}
+if(k%2) swap(ret.a,ret.b);
+}
+ret.a+=k/2+k%2;
+ret.b+=k/2;
+}
+hhh.insert(os,ret);
+}
+return ret;
+}
+void test(int n){
+clock_t t0=clock();
+for(int i=2;i<n;i++){
+state s;s.s[0]=i;s.cnt=1;
+node ans=get(s);
+}
+cout<<clock()-t0<<endl;
+} 
+int main()
+{
+    init();
+state s; s.s[0]=1;s.cnt=1; 
+node ans; ans.a=1;
+hhh.insert(s,ans);
+int n;
+for(cin>>n;n;--n){
+scanf("%d",s.s);
+s.cnt=1;
+ans =get(s);
+printf("%d %d\n",ans.a,ans.b);
+}
+    return 0;
+}
diff --git a/HDOJ/1959_autoAC.cpp b/HDOJ/1959_autoAC.cpp
new file mode 100644
index 0000000..13f3def
--- /dev/null
+++ b/HDOJ/1959_autoAC.cpp
@@ -0,0 +1,69 @@
+#include<stdio.h>
+#include<time.h>
+#include<stdlib.h>
+#include<math.h>
+#include<string.h>
+#include<algorithm>
+using namespace std;
+typedef __int64 lld;
+const int MAX=51;
+const int INF=1000000001;
+const double PI=acos(-1.0);
+const double EPS=1.0e-8;
+const int dir[4][2]={{1,0},{0,1},{-1,0},{0,-1}};
+bool used[MAX][MAX];
+struct Point
+{
+    int x,y;
+}p[MAX];
+bool ok(int x,int y,int len,int n)
+{
+    int i,tx,ty;
+    for(i=0;i<n;i++)
+    {
+        tx=x-p[i].x;
+        ty=y-p[i].y;
+        if(tx*tx+ty*ty>len)return false;
+    }
+    return true;
+}
+int main()
+{
+    int n,m;
+    int T;
+    scanf("%d",&T);
+    while(T--)
+    {
+        scanf("%d%d",&n,&m);
+        memset(used,false,sizeof(used));
+        int i,j;
+        for(i=0;i<m;i++)
+        {
+            scanf("%d%d",&p[i].x,&p[i].y);
+            used[p[i].x][p[i].y]=true;
+        }
+        int ax=-1,ay=-1;
+        for(i=0;i<=n&&ax==-1;i++)
+        {
+            for(j=0;j<=n&&ax==-1;j++)
+            {
+                if(used[i][j])continue;
+                int len=i;
+                if(n-i<len)len=n-i;
+                if(j<len)len=j;
+                if(n-j<len)len=n-j;
+                if(ok(i,j,len*len,m))
+                {
+                    ax=i;
+                    ay=j;
+                }
+            }
+        }
+        if(ax!=-1)
+        {
+            printf("%d %d\n",ax,ay);
+        }
+        else puts("poodle");
+    }
+    return 0;
+}
diff --git a/HDOJ/1960_autoAC.cpp b/HDOJ/1960_autoAC.cpp
new file mode 100644
index 0000000..71433dc
--- /dev/null
+++ b/HDOJ/1960_autoAC.cpp
@@ -0,0 +1,69 @@
+#include<cstdio>
+#include<cstring>
+#include<algorithm>
+#include<cmath>
+#include<vector>
+using namespace std;
+#define N 510
+struct node{
+    int nt;
+    int cost;
+    int x1,x2,y1,y2;
+}s[N];
+vector<int> g[N];
+int linker[N];
+bool vis[N];
+bool dfs(int u){
+    for(int i=0;i<g[u].size();i++){
+        int v=g[u][i];
+        if(!vis[v]){
+            vis[v]=1;
+            if(linker[v]==-1||dfs(linker[v])){
+                linker[v]=u;
+                return true;
+            }
+        }
+    }
+    return false;
+}
+int hungary(int n){
+    memset(linker,-1,sizeof(linker));
+    int cnt=0;
+    for(int i=0;i<n;i++){
+        memset(vis,0,sizeof(vis));
+        if(dfs(i)) cnt++;
+    }
+    return cnt;
+}
+int main(){
+    int t,n;
+    scanf("%d",&t);
+    char str[7];
+    while(t--){
+        scanf("%d",&n);
+        int st,cost;
+        int x1,y1,x2,y2;
+        for(int i=0;i<n;i++){
+            scanf("%s",str);
+            g[i].clear();
+            st=((str[0]-'0')*10+(str[1]-'0'))*60+(str[3]-'0')*10+(str[4]-'0');
+            scanf("%d%d%d%d",&x1,&y1,&x2,&y2);
+            cost=abs(x1-x2)+abs(y1-y2);
+            s[i].nt=st;
+            s[i].cost=cost;
+            s[i].x1=x1;
+            s[i].x2=x2;
+            s[i].y1=y1;
+            s[i].y2=y2;
+        }
+        for(int i=0;i<n;i++){
+            for(int j=i+1;j<n;j++){
+                if(s[i].nt+s[i].cost+1+abs(s[i].x2-s[j].x1)+abs(s[i].y2-s[j].y1)<=s[j].nt){
+                    g[i].push_back(j);
+                }
+            }
+        }
+        printf("%d\n",n-hungary(n));
+    }
+    return 0;
+}
diff --git a/HDOJ/1962_autoAC.cpp b/HDOJ/1962_autoAC.cpp
new file mode 100644
index 0000000..915ded4
--- /dev/null
+++ b/HDOJ/1962_autoAC.cpp
@@ -0,0 +1,74 @@
+#include<iostream>
+#include<map>
+using namespace std;
+#define N 60
+#define MM N*N
+struct node{
+    int next,v;
+    node(){};
+    node(int a,int b){
+        next=a;v=b;
+    }
+}E[MM];
+char card1[N][5];
+char card2[N][5];
+map<char,int> M;
+int head[N],NE,pre[N];
+bool h[N];
+void init(){
+    NE=0;
+    for(int i=0;i<=9;i++)
+        M[i+'0']=i;
+    M['T']=10;M['J']=11;M['Q']=12;
+    M['K']=13;M['A']=14;
+    M['C']=15;M['D']=16;
+    M['S']=17;M['H']=18;
+    memset(head,-1,sizeof(head));
+    memset(pre,-1,sizeof(pre));
+}
+void insert(int u,int v){
+    E[NE]=node(head[u],v);
+    head[u]=NE++;
+}
+bool dfs(int u){
+    for(int i=head[u];i!=-1;i=E[i].next){
+        int v=E[i].v;
+        if(!h[v]){
+            h[v]=1;
+            if(pre[v]==-1||dfs(pre[v])){
+                pre[v]=u;
+                return true;
+            }
+        }
+    }
+    return false;
+}
+bool bigger(char *p,char *q){
+    if(M[p[0]]==M[q[0]])
+        return M[p[1]]>M[q[1]];
+    return M[p[0]]>M[q[0]];
+}
+int main(void){
+    int t;
+    scanf("%d",&t);
+    while(t--){
+        int n;
+        init();
+        scanf("%d",&n);
+        for(int i=1;i<=n;i++)
+            scanf("%s",card1[i]);
+        for(int i=1;i<=n;i++){
+            scanf("%s",card2[i]);
+            for(int j=1;j<=n;j++)
+                if(bigger(card2[i],card1[j]))
+                    insert(i,j+n);
+        }
+        int cn=0;
+        for(int i=1;i<=n;i++){
+            memset(h,0,sizeof(h));
+            if(dfs(i))
+                cn++;
+        }
+        printf("%d\n",cn);
+    }
+}
diff --git a/HDOJ/1963_autoAC.cpp b/HDOJ/1963_autoAC.cpp
new file mode 100644
index 0000000..8520a10
--- /dev/null
+++ b/HDOJ/1963_autoAC.cpp
@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <string.h>
+#include <algorithm>
+using namespace std;
+struct node
+{
+    int v,w;
+}a[20];
+int dp[100000];
+int main()
+{
+    int t,n,i,j,k,val,y;
+    scanf("%d",&t);
+    while(t--)
+    {
+        scanf("%d%d",&val,&y);
+        scanf("%d",&n);
+        for(i = 1;i<=n;i++)
+        {
+            scanf("%d%d",&a[i].v,&a[i].w);
+            a[i].v/=1000;
+        }
+        for(i = 1;i<=y;i++)
+        {
+            int s = val/1000;
+            memset(dp,0,sizeof(dp));
+            for(j = 1;j<=n;j++)
+            {
+                for(k = a[j].v;k<=s;k++)
+                {
+                    dp[k]=max(dp[k],dp[k-a[j].v]+a[j].w);
+                }
+            }
+            val+=dp[s];
+        }
+        printf("%d\n",val);
+    }
+    return 0;
+}
diff --git a/HDOJ/1964_autoAC.cpp b/HDOJ/1964_autoAC.cpp
new file mode 100644
index 0000000..4682b33
--- /dev/null
+++ b/HDOJ/1964_autoAC.cpp
@@ -0,0 +1,181 @@
+#include<stdio.h>
+#include<iostream>
+#include<string.h>
+#include<algorithm>
+using namespace std;
+const int MAXD=15;
+const int HASH=10007;
+const int STATE=1000010;
+struct Node
+{
+    int down,right;
+}node[MAXD][MAXD];
+int N,M;
+int maze[MAXD][MAXD];
+int code[MAXD];
+int ch[MAXD];
+int ex,ey;
+struct HASHMAP
+{
+    int head[HASH],next[STATE],size;
+    int dp[STATE];
+    long long state[STATE];
+    void init()
+    {
+        size=0;
+        memset(head,-1,sizeof(head));
+    }
+    void push(long long st,int ans)
+    {
+        int i,h=st%HASH;
+        for(i=head[h];i!=-1;i=next[i])
+           if(state[i]==st)
+           {
+               if(dp[i]>ans)dp[i]=ans;
+               return;
+           }
+        dp[size]=ans;
+        state[size]=st;
+        next[size]=head[h];
+        head[h]=size++;
+    }
+}hm[2];
+void decode(int *code,int m,long long st)
+{
+    for(int i=m;i>=0;i--)
+    {
+        code[i]=st&7;
+        st>>=3;
+    }
+}
+long long encode(int *code,int m)
+{
+    int cnt=1;
+    memset(ch,-1,sizeof(ch));
+    ch[0]=0;
+    long long st=0;
+    for(int i=0;i<=m;i++)
+    {
+        if(ch[code[i]]==-1)ch[code[i]]=cnt++;
+        code[i]=ch[code[i]];
+        st<<=3;
+        st|=code[i];
+    }
+    return st;
+}
+void shift(int *code,int m)
+{
+    for(int i=m;i>0;i--)code[i]=code[i-1];
+    code[0]=0;
+}
+void dpblank(int i,int j,int cur)
+{
+    int k,left,up;
+    for(k=0;k<hm[cur].size;k++)
+    {
+        decode(code,M,hm[cur].state[k]);
+        left=code[j-1];
+        up=code[j];
+        if(left&&up)
+        {
+            if(left==up)
+            {
+                if(i==ex&&j==ey)
+                {
+                    code[j-1]=code[j]=0;
+                    if(j==M)shift(code,M);
+                    hm[cur^1].push(encode(code,M),hm[cur].dp[k]);
+                }
+            }
+            else
+            {
+                code[j-1]=code[j]=0;
+                for(int t=0;t<=M;t++)
+                    if(code[t]==left)
+                         code[t]=up;
+                if(j==M)shift(code,M);
+                hm[cur^1].push(encode(code,M),hm[cur].dp[k]);
+            }
+        }
+        else if((left&&(!up))||((!left)&&up))
+        {
+            int t;
+            if(left)t=left;
+            else t=up;
+            if(maze[i][j+1])
+            {
+                code[j-1]=0;
+                code[j]=t;
+                hm[cur^1].push(encode(code,M),hm[cur].dp[k]+node[i][j].right);
+            }
+            if(maze[i+1][j])
+            {
+                code[j-1]=t;
+                code[j]=0;
+                if(j==M)shift(code,M);
+                hm[cur^1].push(encode(code,M),hm[cur].dp[k]+node[i][j].down);
+            }
+        }
+        else
+        {
+            if(maze[i][j+1]&&maze[i+1][j])
+            {
+                code[j-1]=code[j]=13;
+                hm[cur^1].push(encode(code,M),hm[cur].dp[k]+node[i][j].down+node[i][j].right);
+            }
+        }
+    }
+}
+char str[30];
+void init()
+{
+    scanf("%d%d%*c",&N,&M);
+    memset(maze,0,sizeof(maze));
+    for(int i=1;i<=N;i++)
+      for(int j=1;j<=M;j++)
+          maze[i][j]=1;
+    gets(str);
+    for(int i=1;i<N;i++)
+    {
+        gets(str);
+        for(int j=1;j<M;j++)
+          node[i][j].right=str[2*j]-'0';
+        gets(str);
+        for(int j=1;j<=M;j++)
+          node[i][j].down=str[2*j-1]-'0';
+    }
+    gets(str);
+    for(int j=1;j<M;j++)
+        node[N][j].right=str[2*j]-'0';
+    gets(str);
+    ex=N;
+    ey=M;
+}
+void solve()
+{
+    int i,j,cur=0;
+    int ans=0;
+    hm[cur].init();
+    hm[cur].push(0,0);
+    for(i=1;i<=N;i++)
+      for(j=1;j<=M;j++)
+      {
+          hm[cur^1].init();
+          dpblank(i,j,cur);
+          cur^=1;
+      }
+    for(i=0;i<hm[cur].size;i++)
+        ans+=hm[cur].dp[i];
+    printf("%d\n",ans);
+}
+int main()
+{
+    int T;
+    scanf("%d",&T);
+    while(T--)
+    {
+        init();
+        solve();
+    }
+    return 0;
+}
diff --git a/HDOJ/1965_autoAC.cpp b/HDOJ/1965_autoAC.cpp
new file mode 100644
index 0000000..454e02e
--- /dev/null
+++ b/HDOJ/1965_autoAC.cpp
@@ -0,0 +1,89 @@
+#include<iostream>
+#include<cstring>
+#include<cstdio>
+using namespace std;
+#define N 100
+int P,n;
+int matrix[N][N],ans[N];
+char str[N];
+void init()
+{
+    int i,j,k;
+    for(i = 0; i < n; i++)
+        if(str[i] == '*')
+            matrix[i][n] = 0;
+        else matrix[i][n] = str[i] - 'a' + 1;
+    for(i = 0; i < n; i++)
+    {
+        k = 1;
+        for(j = 0; j < n; j++)
+        {
+            matrix[i][j] = k;
+            k = (k*(i+1))%P;
+        }
+    }
+}
+int find(int a, int y,int P=100000)
+{
+    int i;
+    a = (a%P + P) % P; y = (y%P + P)%P;
+    for(i = 0; i < P; i++)
+        if((a*i)%P == y)
+            return i;
+}
+void gauss(int P=100000)
+{
+    int i,j,k;
+    int row,col;
+    int a,b,c,sum;
+    row = 0; col = 0;
+    while(row < n && col < n)
+    {
+        for(i = row, j = -1; i < n; i++)
+            if(matrix[i][col] != 0)
+            {
+                j = i; break;
+            }
+        for(i = col; i < n; i++)
+        {
+            k = matrix[row][i];
+            matrix[row][i] = matrix[j][i];
+            matrix[j][i] = k;
+        }
+        a = matrix[row][col];
+        for(i = row+1; i < n; i++)
+        {
+            b = matrix[i][col];
+            for(j = col; j <= n; j++)
+                matrix[i][j] = (matrix[i][j]*a - matrix[row][j]*b)%P;
+        }
+        row++; col++;
+    }
+    for(i = n-1; i >= 0; i--)
+    {
+        sum = 0;
+        for(j = i+1; j < n; j++)
+            sum = (sum + matrix[i][j]*ans[j])%P;
+        ans[i] = find(matrix[i][i],matrix[i][n]-sum,P);
+    }
+    for(i = 0; i < n; i++)
+    {
+        printf("%d",ans[i]);
+        if(i == n-1) printf("\n");
+        else printf(" ");
+    }
+}
+int main()
+{
+    int i,j,k;
+    int cases;
+    scanf("%d",&cases);
+    while(cases--)
+    {
+        scanf("%d %s",&P,str);
+        n = strlen(str);
+        init();
+        gauss(P);
+    }
+    return 0;
+}
diff --git a/HDOJ/1966_autoAC.cpp b/HDOJ/1966_autoAC.cpp
new file mode 100644
index 0000000..cfc7648
--- /dev/null
+++ b/HDOJ/1966_autoAC.cpp
@@ -0,0 +1,57 @@
+#include <stdio.h>  
+#include <string.h>  
+#include <math.h>  
+#define min(a,b) ((a)<(b)?(a):(b))  
+#define max(a,b) ((a)>(b)?(a):(b))  
+#define INF 0x3f3f3f3f  
+const int N = 55;  
+const double eps = 1e-6;  
+int t, n;  
+double dp[N][N];  
+struct Point {  
+    double x, y;  
+    void read() {  
+        scanf("%lf%lf", &x, &y);  
+    }  
+} p[N];  
+double area(Point a, Point b, Point c) {  
+    return fabs((b.x - a.x) * (c.y - a.y) - (c.x - a.x) * (b.y - a.y)) / 2.0;  
+}  
+void init() {  
+    scanf("%d", &n);  
+    for (int i = 0; i < n; i++)  
+        p[i].read();  
+}  
+bool judge(int i, int j, int k) {  
+    double s = area(p[i], p[j], p[k]);  
+    for (int x = 0; x < n; x++) {  
+        if (x == i || x == j || x == k) continue;  
+        double sum = area(p[i], p[j], p[x]) + area(p[i], p[k], p[x]) + area(p[k], p[j], p[x]);  
+        if (fabs(sum - s) < eps) return false;  
+    }  
+    return true;  
+}  
+double solve() {  
+    double ans = INF;  
+    for (int len = 2; len < n; len++) {  
+        for (int l = 0; l < n; l++) {  
+            int r = (l + len) % n;  
+            dp[l][r] = INF;  
+            for (int k = (l + 1) % n; k != r; k = (k + 1) % n) {  
+                if (!judge(l, k, r)) continue;  
+                dp[l][r] = min(dp[l][r], max(max(dp[l][k], dp[k][r]), area(p[l], p[k], p[r])));  
+            }  
+            if (len == n - 1)  
+                ans = min(ans, dp[l][r]);  
+        }  
+    }  
+    return ans;  
+}  
+int main() {  
+    scanf("%d", &t);  
+    while (t--) {  
+        init();  
+        printf("%.1lf\n", solve());  
+    }  
+    return 0;  
+}
diff --git a/HDOJ/1967_autoAC.cpp b/HDOJ/1967_autoAC.cpp
new file mode 100644
index 0000000..71dec97
--- /dev/null
+++ b/HDOJ/1967_autoAC.cpp
@@ -0,0 +1,102 @@
+#include <stdio.h>
+#include <string.h>
+#include <algorithm>
+#include <cmath>
+using namespace std;
+int b1[9][9], b2[9][9];
+int p3[][3] = {
+    {0,1,2},
+    {0,2,1},
+    {1,0,2},
+    {1,2,0},
+    {2,0,1},
+    {2,1,0}
+};
+int *colseg, *rowseg;
+int *col[3];
+int check3(int r, int *m);
+int check4(int r, int *p, int *m)
+{
+    int i, j, k, l;
+    int r1, c1, r2, c2;
+    int v1, v2;
+    int m2[10];
+    memcpy(m2, m, sizeof(int)*10);
+    for (j = 0; j < 3; j++)
+        for (k = 0; k < 3; k++)
+            for (l = 0; l < 3; l++) {
+                r1 = p[j] + rowseg[r]*3;
+                c1 = colseg[k]*3 + col[k][l];
+                r2 = j + r*3;
+                c2 = k*3 + l;
+                v1 = b1[r1][c1];
+                v2 = b2[r2][c2];
+                if (v2) {
+                    if (!m2[v2])
+                        m2[v2] = v1;
+                    else if (m2[v2] != v1)
+                        return 0;
+                }
+            }
+    return check3(r + 1, m2);
+}
+int check3(int r, int *m)
+{
+    int i;
+    if (r == 3)
+        return 1;
+    for (i = 0; i < 6; i++) 
+        if (check4(r, p3[i], m))
+            return 1;
+    return 0;
+}
+int check2()
+{
+    int i, j, k;
+    for (i = 0; i < 6; i++) 
+        for (j = 0; j < 6; j++)
+            for (k = 0; k < 6; k++) {
+                int m[10] = {};
+                col[0] = p3[i];
+                col[1] = p3[j];
+                col[2] = p3[k];
+                if (check3(0, m))
+                    return 1;
+            }
+    return 0;
+}
+int check()
+{
+    int i, j;
+    for (i = 0; i < 6; i++) {
+        for (j = 0; j < 6; j++) {
+            colseg = p3[i];
+            rowseg = p3[j];
+            if (check2())
+                return 1;
+        }
+    }
+    return 0;
+}
+int solve()
+{
+    int i, j, b[9][9];
+    if (check())
+        return 1;
+    for (i = 0; i < 9; i++)
+        for (j = 0; j < 9; j++)
+            b[i][j] = b1[8-j][i];
+    memcpy(b1, b, sizeof(b));
+    return check();
+}
+int main()
+{
+    int T, i;
+    scanf("%d", &T);
+    for (; T--; ) {
+        for (i = 0; i < 81; ++i) scanf(" %1d", b1[i/9]+i%9);
+        for (i = 0; i < 81; ++i) scanf(" %1d", b2[i/9]+i%9);
+        printf(solve() ? "Yes\n" : "No\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1969_autoAC.cpp b/HDOJ/1969_autoAC.cpp
new file mode 100644
index 0000000..01e4c85
--- /dev/null
+++ b/HDOJ/1969_autoAC.cpp
@@ -0,0 +1,39 @@
+#include<stdio.h>
+#include<string.h>
+#include<math.h>
+#define pi acos(-1.0)
+#define eps 1e-7
+int main()
+{
+    int n,t,f,i,r,pep;
+    double s[10005];
+    double max,min,mid;
+    scanf("%d",&t);
+    while(t--)
+    {
+        min=0;max=0;
+        scanf("%d%d",&n,&f);
+        f++;
+        for(i=0; i<n; i++)
+        {
+            scanf("%d",&r);
+            s[i]=pi*r*r;
+            if(max<s[i]) max=s[i];
+        }
+        while(max-min>eps)
+        {
+            mid=(max+min)/2;
+            pep=0;
+            for(i=0;i<n;i++)
+            {
+                pep+=(int)(s[i]/mid);
+            }
+            if(pep>=f)
+                min=mid;
+            else
+                max=mid;
+        }
+        printf("%.4lf\n",mid);
+    }
+return 0;
+}
diff --git a/HDOJ/1970_autoAC.cpp b/HDOJ/1970_autoAC.cpp
new file mode 100644
index 0000000..1b2f886
--- /dev/null
+++ b/HDOJ/1970_autoAC.cpp
@@ -0,0 +1,59 @@
+#include <iostream>
+#include <string>
+#include <algorithm>
+#include <map>
+using namespace std;
+int main()
+{
+    int INF=99999999,N,K,d[30][30],i,j,k,x,y,z,dp[256][30],e[8],v[30],c,b;
+    string s,t;    
+    while (cin >> N >> K && N) {
+        map<string,int> cityMap;
+        for(i=0;i<N;i++) 
+            for(j=0;j<N;j++) 
+                d[i][j]=i==j?0:INF;
+        for(i=0;i<N;i++) {
+            cin >> s;
+            cityMap[s]=i;
+        }
+        if (K)
+            while(cin >> s >> t >> z, x=cityMap[s], 
+                    y=cityMap[t], 
+                    d[x][y]=d[y][x]=min(d[y][x],z), --K);
+        for(k=0;k<N;k++)
+            for(i=0;i<N;i++)
+                for(j=0;j<N;j++)
+                    d[i][j]=min(d[i][j],d[i][k]+d[k][j]);
+        for(i=0;i<8;i++) {
+            cin >> s;
+            e[i]=cityMap[s];
+            for(j=0;j<N;j++)
+                dp[1<<i][j]=d[j][e[i]];
+        }        
+        for(i=1;i<256;i++) {
+            if (!(i&(i-1)))
+                continue;
+            for(k=0;k<N;k++) {
+                dp[i][k]=INF;
+                v[k]=0;
+                for(j=1;j<i;j++)
+                    if ((i|j)==i)
+                        dp[i][k]=min(dp[i][k],dp[j][k]+dp[i-j][k]);
+            }
+            for(j=0;b=INF,j<N;j++) {
+                for(k=0;k<N;k++)
+                    if (dp[i][k]<=b && !v[k])
+                        b=dp[i][c=k];
+                for(k=0,v[c]=1;k<N;k++)
+                    dp[i][c]=min(dp[i][c],dp[i][k]+d[k][c]);
+            }
+        }      
+        for(i=0,b=INF;z=0,i<256;b=min(b,z),i++)
+              for(j=0;y=0,j<4;z+=!!y*dp[y][x],j++)
+                for(k=0;k<8;k+=2)
+                      if ((i>>k&3)==j)
+                        y+=3<<k,x=e[k];        
+        cout << b << endl;     
+    }
+    return 0;
+}
diff --git a/HDOJ/1971_autoAC.cpp b/HDOJ/1971_autoAC.cpp
new file mode 100644
index 0000000..13f6747
--- /dev/null
+++ b/HDOJ/1971_autoAC.cpp
@@ -0,0 +1,78 @@
+#include<stdio.h>
+#include<string.h>
+#include<iostream>
+#include<algorithm> 
+using namespace std;
+#define N 71
+#define M 31 
+#define Max 999999
+int dp[N*M][N*M];  
+struct Book
+{
+    int h, w;
+}; 
+int cmp(Book x, Book y)
+{
+    if(x.h!=y.h)
+        return x.h>y.h;
+    return x.w<y.w;
+} 
+int main()
+{
+    int T, i, j, n, sum, k;
+    scanf("%d", &T);
+    while(T--)
+    {
+        Book book[N]; 
+        scanf("%d", &n);
+        sum=0; 
+        for(i=1; i<=n; i++)
+        {
+            scanf("%d%d", &book[i].h, &book[i].w);
+            sum+=book[i].w;
+        }
+        sort(book+1, book+n+1, cmp);
+        for(i=0; i<=sum; i++)
+            for(j=0; j<=sum; j++)
+                dp[i][j]=Max;
+        dp[0][0]=0;
+        int noww=0; 
+        for(i=2; i<=n; i++)
+        {
+            for(j=noww; j>=0; j--)
+            {
+                for(k=noww; k>=0; k--)
+                {
+                    if(dp[j][k]==Max)    
+                        continue; 
+                    if(noww-j-k<0)
+                         continue;
+                    int a=0; 
+                    if(j==0)
+                        a=book[i].h;
+                    dp[j+book[i].w][k]=min(dp[j+book[i].w][k], dp[j][k]+a);
+                    a=0; 
+                    if(k==0)
+                        a=book[i].h;
+                    dp[j][k+book[i].w]=min(dp[j][k+book[i].w], dp[j][k]+a);
+                } 
+            }
+            noww+=book[i].w;
+        }
+        int minnum=Max;
+        for(j=1; j<=noww; j++)
+        {
+            for(k=1; k<=noww; k++)
+            {
+                if(dp[j][k]==Max)
+                    continue;
+                if(sum-j-k<=0)
+                    continue;
+                int maxw=max(j, k);
+                maxw=max(maxw, sum-j-k); 
+                minnum=min(minnum, maxw*(dp[j][k]+book[1].h));
+            }
+        } 
+        printf("%d\n", minnum);
+    }
+}
diff --git a/HDOJ/1972_autoAC.cpp b/HDOJ/1972_autoAC.cpp
new file mode 100644
index 0000000..5e80749
--- /dev/null
+++ b/HDOJ/1972_autoAC.cpp
@@ -0,0 +1,48 @@
+#include<stdio.h>
+#include<string.h>
+#include<iostream>
+#include<algorithm> 
+#include<queue> 
+using namespace std; 
+struct point
+{
+    int pla, num;
+}; 
+int cmp(int x, int y)
+{
+    return x>y;
+} 
+int main()
+{
+    int T, i, n, m;
+    scanf("%d", &T);
+    while(T--)
+    {
+        point p[105];
+        int a[105]; 
+        queue<point>Q; 
+        scanf("%d%d", &n, &m);
+        for(i=0; i<n; i++)
+        {
+            scanf("%d", &a[i]);
+            p[i].num=a[i], p[i].pla=i;
+            Q.push(p[i]); 
+        }
+        sort(a, a+n, cmp); 
+        int maxtop=0; 
+        int num=1; 
+        while(1)
+        {
+             point x=Q.front();
+             Q.pop();
+            if(x.num==a[maxtop]&&x.pla!=m)
+                maxtop++, num++; 
+            else if(x.num==a[maxtop]&&x.pla==m)
+                break;
+            else
+                Q.push(x);
+        }
+        printf("%d\n", num);
+    }
+    return 0; 
+}
diff --git a/HDOJ/1973_autoAC.cpp b/HDOJ/1973_autoAC.cpp
new file mode 100644
index 0000000..8e9eebf
--- /dev/null
+++ b/HDOJ/1973_autoAC.cpp
@@ -0,0 +1,113 @@
+#include <iostream>
+#include <cstdlib>
+#include <cstring>
+#include <cstdio>
+#include <queue>
+using namespace std;
+struct item
+{
+    int num[4];
+} a, b;
+int prime[100], primenum, cost[10000];
+int toint(item &a)
+{
+    int ans = 0;
+    for (int i = 0; i < 4; i++)
+        ans = ans * 10 + a.num[i];
+    return ans;
+}
+void makeprime()
+{
+    primenum = 1;
+    prime[0] = 2;
+    for (int i = 3; i < 100; i++)
+    {
+        bool ok = true;
+        for (int j = 0; prime[j] * prime[j] <= i; j++)
+            if (i % prime[j] == 0)
+            {
+                ok = false;
+                break;
+            }
+        if (ok)
+        {
+            prime[primenum++] = i;
+        }
+    }
+}
+void init()
+{
+    memset(cost, -1, sizeof(cost));
+    for (int i = 0; i < 4; i++)
+    {
+        char ch;
+        scanf("%c", &ch);
+        a.num[i] = ch - '0';
+    }
+    getchar();
+    for (int i = 0; i < 4; i++)
+    {
+        char ch;
+        scanf("%c", &ch);
+        b.num[i] = ch - '0';
+    }
+    getchar();
+}
+bool isprime(int a)
+{
+    for (int i = 0; i < primenum && prime[i] * prime[i] <= a; i++)
+        if (a % prime[i] == 0)
+            return false;
+    return true;
+}
+void work()
+{
+    cost[toint(a)] = 0;
+    queue<item> q;
+    q.push(a);
+    while (!q.empty())
+    {
+        item temp = q.front();
+        int costnow = cost[toint(temp)];
+        q.pop();
+        for (int i = 0; i < 4; i++)
+        {
+            int x = temp.num[i];
+            for (int j = 0; j < 10; j++)
+            {
+                if (i == 0 && j == 0)
+                    continue;
+                if (j == x)
+                    continue;
+                temp.num[i] = j;
+                int inttemp = toint(temp);
+                if (cost[inttemp] == -1 && isprime(inttemp))
+                {
+                    cost[inttemp] = costnow + 1;
+                    if (inttemp == toint(b))
+                    {
+                        printf("%d\n", cost[inttemp]);
+                        return;
+                    }
+                    q.push(temp);
+                }
+            }
+            temp.num[i] = x;
+        }
+    }
+}
+int main()
+{
+    int t;
+    makeprime();
+    scanf("%d", &t);
+    getchar();
+    while (t--)
+    {
+        init();
+        if (toint(a) == toint(b))
+            printf("0\n");
+        work();
+    }
+    return 0;
+}
diff --git a/HDOJ/1975_autoAC.cpp b/HDOJ/1975_autoAC.cpp
new file mode 100644
index 0000000..b649670
--- /dev/null
+++ b/HDOJ/1975_autoAC.cpp
@@ -0,0 +1,44 @@
+#include <iostream>
+#include <cstdio>
+#include <algorithm>
+#include <cstring>
+using namespace std;
+char str[30];
+bool vis[30];
+int cnt[30];
+bool confirm(){
+    bool flag=true;
+    for(int i=1;i<=26;i++)
+    if(i%2==0){
+        if(cnt[i]%2){
+            flag=false;
+            break;
+        }
+    }
+    return flag;
+}
+int main(){
+    int T,cnted;
+    scanf("%d",&T);
+    while(T--){
+        scanf("%s",str);
+        memset(vis,false,sizeof(vis));
+        memset(cnt,0,sizeof(cnt));
+        for(int i=0;i<26;i++){
+            if(!vis[i]){
+                int k=i;
+                cnted=0;
+                while(!vis[k]){
+                    vis[k]=true;
+                    k=str[k]-'A';
+                    cnted++;
+                }
+                cnt[cnted]++;
+            }
+        }
+        if(confirm())
+        printf("Yes\n");
+        else printf("No\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1976_autoAC.cpp b/HDOJ/1976_autoAC.cpp
new file mode 100644
index 0000000..800ffa5
--- /dev/null
+++ b/HDOJ/1976_autoAC.cpp
@@ -0,0 +1,24 @@
+#include <stdio.h>
+int main()
+{
+    int a[6],i,t;
+    scanf("%d",&t);
+    while(t--)
+    {
+        for(i=0;i<6;i++)
+            scanf("%d",&a[i]);
+        for(i=0;i<3;i++)
+        {
+            if(a[i]>a[i+3])
+            {
+                printf("First\n");
+                break;
+            }else if(a[i]<a[i+3])
+            {
+                printf("Second\n");
+                break;
+            }else if(i==2)printf("Same\n");
+        }
+    }
+    return 0;
+}
diff --git a/HDOJ/1977_autoAC.cpp b/HDOJ/1977_autoAC.cpp
new file mode 100644
index 0000000..88298e9
--- /dev/null
+++ b/HDOJ/1977_autoAC.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+#include <string.h>
+#include <cstdio>
+using namespace std;
+typedef long long LL;
+const int MS=1001;
+int main()
+{
+    LL n;
+    int T;
+    cin>>T;
+    while(T--)
+    {
+        cin>>n;
+        cout<<n*n*n<<" "<<(n+1)*(n+1)*(n+1)<<endl;
+    }
+    return 0;
+}
diff --git a/HDOJ/1978_autoAC.cpp b/HDOJ/1978_autoAC.cpp
new file mode 100644
index 0000000..76c21fd
--- /dev/null
+++ b/HDOJ/1978_autoAC.cpp
@@ -0,0 +1,25 @@
+#include<stdio.h>
+#include<string.h>
+int main()
+{
+    int T,i,j,ii,jj,n,m,mark[105][105],dp[105][105],t,sum;
+    scanf("%d",&T);
+    while(T--)
+    {
+        memset(mark,0,sizeof(mark));
+        scanf("%d%d",&n,&m);
+        for(i=1;i<=n;i++)
+         for(j=1;j<=m;j++)
+         scanf("%d",&dp[i][j]);
+         mark[1][1]=1;
+         for(i=1;i<=n;i++)
+          for(j=1;j<=m&&!(i==n&&j==m);j++)
+          {
+              t=dp[i][j];sum=mark[i][j]%10000;
+              for(ii=i;ii<=i+t&&ii<=n;ii++)
+               for(jj=j;jj<=j+t-ii+i&&jj<=m;jj++)
+               mark[ii][jj]+=sum;
+          }
+          printf("%d\n",mark[n][m]%10000);
+    }
+}
diff --git a/HDOJ/1979_autoAC.cpp b/HDOJ/1979_autoAC.cpp
new file mode 100644
index 0000000..f0cea03
--- /dev/null
+++ b/HDOJ/1979_autoAC.cpp
@@ -0,0 +1,9 @@
+#include<stdio.h>
+#include<iostream>
+#include <string>
+using namespace std;
+int main()
+{
+    string s="1193\n1009\n9221\n3191\n\n1193\n1021\n9029\n3911\n\n1193\n1201\n9209\n3911\n\n1193\n1229\n9001\n3191\n\n1193\n7043\n3697\n3911\n\n1193\n7253\n3821\n3319\n\n1193\n7253\n3851\n3319\n\n1193\n7457\n3821\n3719\n\n1193\n7963\n3407\n3911\n\n1193\n9001\n1229\n3191\n\n1193\n9011\n1669\n3911\n\n1193\n9013\n1669\n3911\n\n1193\n9029\n1021\n3911\n\n1193\n9041\n1399\n3371\n\n1193\n9209\n1201\n3911\n\n1193\n9221\n1009\n3191\n\n1193\n9257\n3821\n3319\n\n1193\n9257\n3851\n3319\n\n1193\n9479\n1381\n3917\n\n1193\n9661\n1109\n3911\n\n1193\n9661\n3109\n3911\n\n1193\n9923\n1009\n3191\n\n1733\n1069\n9491\n3371\n\n1733\n1283\n9521\n3319\n\n1733\n1283\n9551\n3319\n\n1733\n1487\n9521\n3719\n\n1733\n1949\n9601\n3371\n\n1733\n9227\n1021\n3719\n\n1733\n9931\n1409\n3911\n\n1913\n1009\n9221\n3911\n\n1913\n1021\n9029\n3191\n\n1913\n1033\n9497\n3191\n\n1913\n1069\n9161\n3191\n\n1913\n1069\n9161\n3391\n\n1913\n1201\n9209\n3191\n\n1913\n1229\n9001\n3911\n\n1913\n1439\n9781\n3917\n\n1913\n1619\n9601\n3191\n\n1913\n1901\n9209\n3391\n\n1913\n7207\n3221\n3719\n\n1913\n7949\n3301\n3191\n\n1913\n9001\n1229\n3911\n\n1913\n9001\n3299\n3911\n\n1913\n9029\n1021\n3191\n\n1913\n9173\n3389\n3391\n\n1913\n9209\n1201\n3191\n\n1913\n9221\n1009\n3911\n\n1933\n1283\n9521\n3719\n\n1933\n1283\n9551\n3719\n\n1933\n1619\n9601\n3191\n\n1933\n9029\n1091\n3191\n\n1933\n9133\n1789\n3391\n\n1933\n9833\n3719\n3191\n\n1933\n9871\n3319\n3391\n\n3191\n1009\n9221\n1193\n\n3191\n1009\n9923\n1193\n\n3191\n1021\n9029\n1913\n\n3191\n1091\n9029\n1933\n\n3191\n1201\n9209\n1913\n\n3191\n1229\n9001\n1193\n\n3191\n3301\n7949\n1913\n\n3191\n3719\n9833\n1933\n\n3191\n7027\n1223\n9173\n\n3191\n9001\n1229\n1193\n\n3191\n9029\n1021\n1913\n\n3191\n9161\n1069\n1913\n\n3191\n9209\n1201\n1913\n\n3191\n9221\n1009\n1193\n\n3191\n9341\n1879\n7193\n\n3191\n9497\n1033\n1913\n\n3191\n9601\n1619\n1913\n\n3191\n9601\n1619\n1933\n\n3319\n3821\n7253\n1193\n\n3319\n3821\n9257\n1193\n\n3319\n3851\n7253\n1193\n\n3319\n3851\n9257\n1193\n\n3319\n9521\n1283\n1733\n\n3319\n9551\n1283\n1733\n\n3371\n1399\n9041\n1193\n\n3371\n3821\n1259\n9133\n\n3371\n3821\n1559\n9133\n\n3371\n7229\n1201\n9173\n\n3371\n7841\n1259\n9173\n\n3371\n9491\n1069\n1733\n\n3371\n9601\n1949\n1733\n\n3391\n1789\n9133\n1933\n\n3391\n3319\n9871\n1933\n\n3391\n3389\n9173\n1913\n\n3391\n3821\n1259\n9173\n\n3391\n3821\n1559\n9173\n\n3391\n9161\n1069\n1913\n\n3391\n9209\n1901\n1913\n\n3719\n1021\n9227\n1733\n\n3719\n3221\n7207\n1913\n\n3719\n3821\n7457\n1193\n\n3719\n9521\n1283\n1933\n\n3719\n9521\n1487\n1733\n\n3719\n9551\n1283\n1933\n\n3911\n1009\n9221\n1913\n\n3911\n1021\n9029\n1193\n\n3911\n1109\n9661\n1193\n\n3911\n1201\n9209\n1193\n\n3911\n1229\n9001\n1913\n\n3911\n1409\n9931\n1733\n\n3911\n1669\n9011\n1193\n\n3911\n1669\n9013\n1193\n\n3911\n3109\n9661\n1193\n\n3911\n3299\n9001\n1913\n\n3911\n3407\n7963\n1193\n\n3911\n3527\n1283\n9133\n\n3911\n3527\n1583\n9133\n\n3911\n3697\n7043\n1193\n\n3911\n7529\n1283\n9133\n\n3911\n7529\n1583\n9133\n\n3911\n7547\n1283\n9173\n\n3911\n9001\n1229\n1913\n\n3911\n9029\n1021\n1193\n\n3911\n9209\n1201\n1193\n\n3911\n9221\n1009\n1913\n\n3911\n9749\n1831\n7193\n\n3917\n1381\n9479\n1193\n\n3917\n9781\n1439\n1913\n\n7193\n1831\n9749\n3911\n\n7193\n1879\n9341\n3191\n\n9133\n1259\n3821\n3371\n\n9133\n1283\n3527\n3911\n\n9133\n1283\n7529\n3911\n\n9133\n1559\n3821\n3371\n\n9133\n1583\n3527\n3911\n\n9133\n1583\n7529\n3911\n\n9173\n1201\n7229\n3371\n\n9173\n1223\n7027\n3191\n\n9173\n1259\n3821\n3391\n\n9173\n1259\n7841\n3371\n\n9173\n1283\n7547\n3911\n\n9173\n1559\n3821\n3391";
+    cout<<s<<endl;
+}
diff --git a/HDOJ/1981_autoAC.cpp b/HDOJ/1981_autoAC.cpp
new file mode 100644
index 0000000..a775136
--- /dev/null
+++ b/HDOJ/1981_autoAC.cpp
@@ -0,0 +1,39 @@
+#include<cmath>
+#include<cstdio>
+#include<cstring>
+#include<cstdlib>
+#include<iostream>
+int main()
+{
+    int T, i, n, len, a, b, temp,j, k;
+    char str[28] = "bcdefghijklmnopqrstuvwxyza", ch[2], letter[90010];
+    scanf("%d",&T);
+    while(T--)
+    {
+        scanf("%d%d%s",&len,&n,letter + 1);
+        for(i = 0;i < n; i++)
+        {
+            scanf("%s",ch);
+            if(ch[0] == 'Q')
+            {
+                scanf("%d",&a);
+                printf("%c\n",letter[a]);
+            }
+            else if(ch[0] == 'R')
+            {
+                scanf("%d%d",&a,&b);
+                for(j = a, k = b;j <= k; j++, k-- ){
+                    temp = letter[j], letter[j] = letter[k], letter[k] = temp;}
+            }
+            else if(ch[0] == 'S')
+            {
+                scanf("%d%d",&a,&b);
+                for(j = a; j <= b; j++)
+                {
+                    letter[j] = str[letter[j] - 'a'];
+                }
+            }
+        }
+    }
+    return 0;
+}
diff --git a/HDOJ/1982_autoAC.cpp b/HDOJ/1982_autoAC.cpp
new file mode 100644
index 0000000..3f6ce07
--- /dev/null
+++ b/HDOJ/1982_autoAC.cpp
@@ -0,0 +1,46 @@
+#include<iostream>
+#include<sstream>
+#include<vector>
+#include<string>
+#include<algorithm>
+using namespace std;
+void process(string s)
+{
+    replace(s.begin(),s.end(),'-',' ');
+    stringstream m(s);
+    int t;
+    while(m>>t)
+    {
+        cout<<(char)('A'+t-1);
+    }
+}
+void run()
+{
+    string s,t="";
+    cin>>s;
+    for(int i=0; i<s.size(); i++)
+    {
+        if(s[i]=='#')
+        {
+            if(t!="")
+            {
+                process(t);
+                t="";
+            }
+            cout<<" ";
+        }
+        else
+        {
+            t+=s[i];
+        }
+    }
+    process(t);
+    cout<<endl;
+}
+int main()
+{
+    int T;
+    cin>>T;
+    while(T--) run();
+    return 0;
+}
diff --git a/HDOJ/1983_autoAC.cpp b/HDOJ/1983_autoAC.cpp
new file mode 100644
index 0000000..171bc07
--- /dev/null
+++ b/HDOJ/1983_autoAC.cpp
@@ -0,0 +1,145 @@
+#include<cstdio>
+#include<cstring>
+#include<iostream>
+#include<queue>
+using namespace std;
+typedef struct S {
+    int order, time, J;
+} STEP;
+char map[100], s[10];
+int m, n, start;
+int dx[] = {0, 0, 1, -1};
+int dy[] = {1, -1, 0, 0};
+int vis[2][100];
+int t;
+int bfs() {
+    int k, i, j, xx, yy, temp;
+    STEP now, next;
+    now.order = start;
+    now.time = 0;
+    now.J = 0;
+    queue<STEP> q;
+    memset(vis, 0, sizeof (vis));
+    vis[0][start] = 1;
+    q.push(now);
+    while (!q.empty()) {
+        now = q.front();
+        q.pop();
+        if (now.time >= t)
+            continue;
+        i = now.order / n;
+        j = now.order % n;
+        for (k = 0; k < 4; ++k) {
+            xx = i + dx[k];
+            yy = j + dy[k];
+            temp = xx * n + yy;
+            next.time = now.time + 1;
+            if (xx >= 0 && xx < m && yy >= 0 && yy < n) {
+                if (map[temp] == 'E') {
+                    if (now.J)
+                        return 0;
+                }
+                if (map[temp] != '#') {
+                    if (map[temp] == 'J')
+                        next.J = 1;
+                    else
+                        next.J = now.J;
+                    if (!vis[now.J][temp]) {
+                        vis[now.J][temp] = 1;
+                        next.order = temp;
+                        q.push(next);
+                    }
+                }
+            }
+        }
+    }
+    return 1;
+}
+int main() {
+    int i, j, jd, T, ans;
+    scanf("%d", &T);
+    while (T--) {
+        scanf("%d%d%d", &m, &n, &t);
+        scanf("%*c");
+        jd = 0;
+        for (i = 0; i < m; ++i) {
+            scanf("%s", s);
+            for (j = 0; j < n; ++j) {
+                map[jd + j] = s[j];
+                if (s[j] == 'S')
+                    start = jd + j;
+            }
+            jd += n;
+        }
+        int k;
+        if (bfs()) {
+            ans = 0;
+            goto L;
+        }
+        char ch[3];
+        for (i = 0; i < m * n; ++i) {
+            if (map[i] == '#' || map[i] == 'S' || map[i] == 'E') {
+                continue;
+            }
+            ch[0] = map[i];
+            map[i] = '#';
+            if (bfs()) {
+                ans = 1;
+                goto L;
+            }
+            map[i] = ch[0];
+        }
+        for (i = 0; i < m * n; ++i) {
+            if (map[i] == '#' || map[i] == 'S' || map[i] == 'E') {
+                continue;
+            }
+            ch[0] = map[i];
+            map[i] = '#';
+            for (j = i + 1; j < m * n; ++j) {
+                if (map[j] == '#' || map[j] == 'S' || map[j] == 'E') {
+                    continue;
+                }
+                ch[1] = map[j];
+                map[j] = '#';
+                if (bfs()) {
+                    ans = 2;
+                    goto L;
+                }
+                map[j] = ch[1];
+            }
+            map[i] = ch[0];
+        }
+        for (i = 0; i < m * n; ++i) {
+            if (map[i] == '#' || map[i] == 'S' || map[i] == 'E') {
+                continue;
+            }
+            ch[0] = map[i];
+            map[i] = '#';
+            for (j = i + 1; j < m * n; ++j) {
+                if (map[j] == '#' || map[j] == 'S' || map[j] == 'E') {
+                    continue;
+                }
+                ch[1] = map[j];
+                map[j] = '#';
+                for (k = j + 1; k < m * n; ++k) {
+                    if (map[k] == '#' || map[k] == 'S' || map[k] == 'E') {
+                        continue;
+                    }
+                    ch[2] = map[k];
+                    map[k] = '#';
+                    if (bfs()) {
+                        ans = 3;
+                        goto L;
+                    }
+                    map[k] = ch[2];
+                }
+                map[j] = ch[1];
+            }
+            map[i] = ch[0];
+        }
+        ans = 4;
+L:
+        printf("%d\n", ans);
+    }
+    return 0;
+}
diff --git a/HDOJ/1984_autoAC.cpp b/HDOJ/1984_autoAC.cpp
new file mode 100644
index 0000000..ad89453
--- /dev/null
+++ b/HDOJ/1984_autoAC.cpp
@@ -0,0 +1,22 @@
+#include<stdio.h>
+#include<string.h>
+int main()
+{
+    int tot=0,t,i,n,len;
+    char a[100];
+    scanf("%d",&n);
+    getchar();
+    while(n--)
+    {
+        tot++;
+        scanf("%d",&t);
+        getchar();
+        gets(a);
+        len=strlen(a);
+        printf("%d ",tot);
+        for(i=0;i<len;i++)
+            if(i!=(t-1)) printf("%c",a[i]);
+        printf("\n");
+    }
+return 0;
+}
diff --git a/HDOJ/1985_autoAC.cpp b/HDOJ/1985_autoAC.cpp
new file mode 100644
index 0000000..74a296b
--- /dev/null
+++ b/HDOJ/1985_autoAC.cpp
@@ -0,0 +1,23 @@
+#include<stdio.h>
+#include<string.h>
+int main()
+{
+    double n;
+    int t,i;
+    char a[3];
+    scanf("%d",&t);
+    i=1;
+    while(t--)
+    {
+        scanf("%lf %s",&n,a);
+        if(strcmp(a,"kg")==0)
+            printf("%d %.4lf lb\n",i,n*2.2046);
+        else if(strcmp(a,"lb")==0)
+            printf("%d %.4lf kg\n",i,n*0.4536);
+        else if(strcmp(a,"l")==0)
+            printf("%d %.4lf g\n",i,n*0.2642);
+        else if(strcmp(a,"g")==0)
+            printf("%d %.4lf l\n",i,n*3.7854);
+        i++;
+    }
+}
diff --git a/HDOJ/1986_autoAC.cpp b/HDOJ/1986_autoAC.cpp
new file mode 100644
index 0000000..0271ead
--- /dev/null
+++ b/HDOJ/1986_autoAC.cpp
@@ -0,0 +1,51 @@
+#include<iostream>
+#include<cstdio>
+#include<cstring>
+#include<string>
+#include<algorithm>
+using namespace std;
+const char biao[27][6]={{"00000"},{"00001"},{"00010"},{"00011"},{"00100"},{"00101"},{"00110"},{"00111"},{"01000"},{"01001"},{"01010"},{"01011"},{"01100"},{"01101"},{"01110"},{"01111"},{"10000"},{"10001"},{"10010"},{"10011"},{"10100"},{"10101"},{"10110"},{"10111"},{"11000"},{"11001"},{"11010"}};
+int map[30][30];
+string s;
+bool m[1000];
+int main()
+{
+    int T,r,c;
+    scanf("%d",&T);
+    for(int t=1;t<=T;t++)
+    {
+        memset(m,0,sizeof(m));
+        memset(map,-1,sizeof(map));
+        scanf("%d%d",&r,&c);
+        getchar();
+       getline(cin,s);
+        int sum=0;
+        for( int i = 0; s[i]!='\0' ; i++ )
+        {
+            int k=0;
+            if(s[i]>='A' && s[i]<='Z') k=(int)(s[i]-'A')+1;
+            for(int j=0;j<5;j++){
+                 m[++sum] = biao[k][j]-'0';
+            }
+        }
+        int tot=0,x,y;
+        x=0;y=0;
+        map[0][0] = m[++tot];
+        while( tot < sum ) 
+        {
+            while(y+1<c && map[x][y+1]==-1) map[x][++y] = m[++tot];
+            while(x+1<r && map[x+1][y]==-1) map[++x][y] = m[++tot];
+            while(y-1>=0&& map[x][y-1]==-1) map[x][--y] = m[++tot];
+            while(x-1>=0&& map[x-1][y]==-1) map[--x][y] = m[++tot];
+        }
+        printf("%d ",t);
+        for(int i=0;i<r;i++)
+            for(int j=0;j<c;j++)
+            {
+                if(map[i][j]==-1) printf("0");
+                else printf("%d",map[i][j]);
+            }
+              printf("\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1987_autoAC.cpp b/HDOJ/1987_autoAC.cpp
new file mode 100644
index 0000000..7c4295e
--- /dev/null
+++ b/HDOJ/1987_autoAC.cpp
@@ -0,0 +1,59 @@
+#include <iostream>
+#include <algorithm>
+#include <utility>
+using namespace std;
+typedef pair<int , int> P;
+const int dx[] = {0 , 1 , 0 , -1} , dy[] = {1 , 0 , -1 , 0};
+const int MAX = 30;
+int array[MAX][MAX];
+int main()
+{
+    int t;
+    cin >> t;
+    for(int s = 1; s <= t; ++s)
+    {
+        int r , c;
+        string cipher;
+        cin >> r >> c >> cipher;
+        fill(*array , *array + MAX * MAX , -1);
+        size_t cnt = 0;
+        for(int i = 0; cnt < cipher.size() && i < r; ++i)
+            for(int j = 0; cnt < cipher.size() && j < c; ++j)
+            {array[i][j] = cipher[cnt ++] - '0';}
+        //decode
+        cout << s << ' ';
+        P pos(0 , 0);
+        int direc = 0;
+        string decode;
+        for(int i = 1; i <= (r * c / 5); ++i)
+        {
+            int val = 0;
+            for(int k = 1; k <= 5; ++k)
+            {
+                int x = pos.first , y = pos.second;
+                if(array[x][y] == -1 || x < 0 || x >= r || y < 0 || y >= c)
+                {
+                    int px = x + dx[direc] , py = y + dy[direc];
+                    while(array[px][py] == -1 || px < 0 || px >= r || py < 0 || py >= c)
+                    {
+                        ++direc;
+                        direc %= 4;
+                        px = x + dx[direc] , py = y + dy[direc];
+                    }
+                    x = px;y = py;
+                }
+                    val = 2 * val + array[x][y];
+                array[x][y] = -1;
+                pos.first = x;pos.second = y;
+            }
+            if(val == 0)
+            {decode += ' ';}
+            else{decode += static_cast<char>(val - 1 + 'A');}
+        }
+        int end = decode.size() - 1;
+        while(decode[end] == ' '){--end;}
+        for(int i = 0; i <= end; ++i){cout << decode[i];}
+        cout << endl;
+    }
+    return 0;
+}
diff --git a/HDOJ/1988_autoAC.cpp b/HDOJ/1988_autoAC.cpp
new file mode 100644
index 0000000..68c7140
--- /dev/null
+++ b/HDOJ/1988_autoAC.cpp
@@ -0,0 +1,72 @@
+#include <cstdio>
+#include <cmath>
+int a[47];
+void reserve (int pos)
+{
+    int tt;
+    for(int i = 1, j = pos; i < j; i++,j--)
+    {
+        tt = a[i],a[i] = a[j],a[j] = tt;
+    }
+    for(int i = 1; i <= pos; i++)
+    {
+        a[i] = -a[i];
+    }
+}
+int main()
+{
+    int t;
+    int n;
+    int cas = 0;
+    int b[147];
+    scanf("%d",&t);
+    while(t--)
+    {
+        int k = 0;
+        scanf("%d",&n);
+        for(int i = 1; i <= n; i++)
+        {
+            scanf("%d",&a[i]);
+        }
+        int p = 0;
+        for(int i = n; i >= 1; i--)
+        {
+            if(a[i] == i)
+                continue;
+            for(int j = 1; j <= n; j++)
+            {
+                if(fabs(a[j]) == i)
+                {
+                    p = j;
+                }
+            }
+            if(p != 1)
+            {
+                reserve(p);
+                b[k++] = p;
+            }
+            if(a[1] > 0)
+            {
+                a[1] = -a[1];
+                b[k++] = 1;
+            }
+            if(i != 1)
+            {
+                b[k++] = i;
+                reserve(i);
+            }
+            else
+            {
+                b[k++] = 1;
+                a[1] = -a[1];
+            }
+        }
+        printf("%d %d",++cas,k);
+        for(int i = 0; i < k; i++)
+        {
+            printf(" %d",b[i]);
+        }
+        printf("\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1990_autoAC.cpp b/HDOJ/1990_autoAC.cpp
new file mode 100644
index 0000000..10bfc72
--- /dev/null
+++ b/HDOJ/1990_autoAC.cpp
@@ -0,0 +1,29 @@
+#include <cstdio>
+#include <cstring>
+int main()
+{
+    int t;
+    int cas = 0;
+    char s[1117];
+    scanf("%d",&t);
+    getchar();
+    while(t--)
+    {
+        //scanf("%s",s);
+        gets(s);
+        int len = strlen(s);
+        int k = 0;
+        int maxx = 0;
+        for(int i = 0; i < len; i++)
+        {
+            if(s[i] == '[')
+                k++;
+            else
+                k--;
+            if(k > maxx)
+                maxx = k;
+        }
+        printf("%d %d\n",++cas,1<<maxx);
+    }
+    return 0;
+}
diff --git a/HDOJ/1992_autoAC.cpp b/HDOJ/1992_autoAC.cpp
new file mode 100644
index 0000000..999e2df
--- /dev/null
+++ b/HDOJ/1992_autoAC.cpp
@@ -0,0 +1,15 @@
+# include <stdio.h>
+int dp[25] = {1,1,5,11} ;
+int main ()
+{
+    int T, i, nCase = 1, n;
+    for(i = 4 ; i <= 22 ; i++)
+        dp[i] = dp[i-1]+dp[i-2]*5+dp[i-3]-dp[i-4] ;
+    scanf ("%d", &T) ;
+    while (T--)
+    {
+        scanf ("%d", &n) ;
+        printf ("%d %d\n", nCase++, dp[n]) ;
+    }
+    return 0 ;
+}
diff --git a/HDOJ/1993_autoAC.cpp b/HDOJ/1993_autoAC.cpp
new file mode 100644
index 0000000..0cf06f6
--- /dev/null
+++ b/HDOJ/1993_autoAC.cpp
@@ -0,0 +1,145 @@
+#include <iostream>
+#include <vector>
+using namespace std;
+ class face
+ {
+ public:
+     char C;
+     int dir;
+     void rotate(int k)
+     {
+         dir = (dir + k) % 4;
+     }
+ };
+ class state
+ {
+ public:
+     face link[4];
+     face mid;
+ public:
+     void rotate()
+     {
+         mid.rotate(1);
+         face temp = link[3];
+         for (int i = 3; i > 0; i--)
+             link[i] = link[i-1];
+         link[0] = temp;
+         for (int i = 0; i < 4; i++)
+             link[i].rotate(1);
+     }
+     bool Compare(state a)
+     {
+         if (mid.C != a.mid.C || mid.dir != a.mid.dir) return false;
+         for (int i = 0; i < 4; i++)
+         {
+             if (a.link[i].C == '*' || (a.link[i].C == link[i].C && a.link[i].dir == link[i].dir)) continue;
+             return false;
+         }
+         return true;
+     }
+ };
+ face cube[6];
+ state P[6];
+ bool Find(state ans)
+ {
+     for (int i = 0; i < 6; i++)
+     {
+         for (int j = 0; j < 4; j++)
+         {
+             ans.rotate();
+             if (P[i].Compare(ans)) return true;
+         }
+     }
+     return false;
+ }
+ int main()
+ {
+     int T;
+     scanf("%d", &T);
+     getchar();
+     for (int ctr = 1; ctr <= T; ctr++)
+     {
+         vector<int> ret;
+             ret.clear();
+             int tot = 0;
+         for (int i = 0; i < 6; i++)
+         {
+             char ch;
+             int d;
+             scanf("%c%d", &ch, &d);
+             d--;
+             cube[i].C = ch;
+             cube[i].dir = d;
+         }
+         getchar();
+         P[0].mid = cube[0];
+         P[0].link[0] = cube[4],P[0].link[0].rotate(2);
+         P[0].link[1] = cube[3],P[0].link[1].rotate(3);
+         P[0].link[2] = cube[2];
+         P[0].link[3] = cube[1],P[0].link[3].rotate(1);
+         P[1].mid = cube[1];
+         P[1].link[0] = cube[0],P[1].link[0].rotate(3);
+         P[1].link[1] = cube[2];
+         P[1].link[2] = cube[5],P[1].link[2].rotate(1);
+         P[1].link[3] = cube[4];
+         P[2].mid = cube[2];
+         P[2].link[0] = cube[0];
+         P[2].link[1] = cube[3];
+         P[2].link[2] = cube[5];
+         P[2].link[3] = cube[1];
+         P[3].mid = cube[3];
+         P[3].link[0] = cube[0],P[3].link[0].rotate(1);
+         P[3].link[1] = cube[4];
+         P[3].link[2] = cube[5],P[3].link[2].rotate(3);
+         P[3].link[3] = cube[2];
+         P[4].mid = cube[4];
+         P[4].link[0] = cube[0],P[4].link[0].rotate(2);
+         P[4].link[1] = cube[1];
+         P[4].link[2] = cube[5],P[4].link[2].rotate(2);
+         P[4].link[3] = cube[3];
+         P[5].mid = cube[5];
+         P[5].link[0] = cube[2];
+         P[5].link[1] = cube[3],P[5].link[1].rotate(1);
+         P[5].link[2] = cube[4],P[5].link[2].rotate(2);
+         P[5].link[3] = cube[1],P[5].link[3].rotate(3);
+         for (int i = 0; i < 5; i++)
+         {
+             state ans;
+             for (int j = 0; j < 3; j++)
+             {
+                 char ch;
+                 int d;
+                 scanf("%c%d", &ch, &d);
+                 d--;
+                 if (j == 0) 
+                 {
+                     ans.mid.C = ch;
+                     ans.mid.dir = d;
+                 }
+                 else
+                 {
+                     ans.link[j].C = ch;
+                     ans.link[j].dir = d;
+                 }
+             }
+             getchar();
+             ans.mid.rotate (2);
+             ans.link[1].rotate(3);
+             ans.link[2].rotate(1);
+             ans.link[0].C = '*';
+             ans.link[3].C = '*';
+             if (Find(ans)) tot+=1, ret.push_back(1);
+             else
+                 ret.push_back(0);
+         }
+         printf("%d ", ctr);
+         printf("%d", tot);
+             for (int i = 0; i < 5; i++)
+                 if (ret[i])
+                     printf(" Y");
+                 else
+                     printf(" N");
+             printf("\n");
+     }
+     return 0;
+ }
diff --git a/HDOJ/1994_autoAC.cpp b/HDOJ/1994_autoAC.cpp
new file mode 100644
index 0000000..6e774d8
--- /dev/null
+++ b/HDOJ/1994_autoAC.cpp
@@ -0,0 +1,17 @@
+#include<stdio.h>
+int main()
+{
+    int T,q;
+    double y,e,f,g;
+    scanf("%d",&T);
+    while(T--)
+    {
+        scanf("%lf%d%lf%lf%lf",&y,&q,&e,&f,&g);
+        double sum1=y*(1+(f*(q+365))/36500);
+        double sum2;
+        sum2=y*(1+(e*q)/36500);
+        sum2=sum2*(1+g/100);
+        printf("%.1lf\n%.1lf\n",sum2,sum1);
+    }
+    return 0;
+}
diff --git a/HDOJ/1995_autoAC.cpp b/HDOJ/1995_autoAC.cpp
new file mode 100644
index 0000000..bac75c8
--- /dev/null
+++ b/HDOJ/1995_autoAC.cpp
@@ -0,0 +1,11 @@
+#include <stdio.h>
+int main()
+{
+    int t,n,k;
+    scanf("%d",&t);
+    while(t--){
+        scanf("%d%d",&n,&k);
+        printf("%I64d\n",1LL<<n-k);
+    }
+    return 0;
+}
diff --git a/HDOJ/1996_autoAC.cpp b/HDOJ/1996_autoAC.cpp
new file mode 100644
index 0000000..fb70a88
--- /dev/null
+++ b/HDOJ/1996_autoAC.cpp
@@ -0,0 +1,19 @@
+#include<stdio.h>
+long long save[30]={1};
+void work()
+{
+    for(int i=1;i<30;i++)
+       save[i]=save[i-1]*3;
+}
+int main()
+{
+    int test,n;
+    work();
+    scanf("%d",&test);
+    while(test--)
+    {
+     scanf("%d",&n);
+     printf("%I64d\n",save[n]);
+    }
+    return 0;
+}
diff --git a/HDOJ/1997_autoAC.cpp b/HDOJ/1997_autoAC.cpp
new file mode 100644
index 0000000..64ba704
--- /dev/null
+++ b/HDOJ/1997_autoAC.cpp
@@ -0,0 +1,46 @@
+#include<iostream>
+#include<queue>
+using namespace std;
+int main()
+{
+    int t, n, i, j, x, m, p, q, num;
+    bool flag = 1;
+    cin >> t;
+    while(t--)
+    {
+        flag = 1;
+        cin >> n;
+        x = n % 2;
+        cin >> m;
+        while(m--)
+        {
+            cin >> num;
+            if( num % 2 != x )
+                flag = 0;
+            x ^= 1;
+        }
+        x = n % 2;
+        cin >> p;
+        while( p -- )
+        {
+            cin >> num;
+            x ^= 1;
+            if( num % 2 != x )
+                flag = 0;
+        }
+        x = n % 2;
+        cin >> q;
+        while( q -- )
+        {
+            cin >> num;
+            if( num % 2 != x )
+                flag = 0;
+            x ^= 1;
+        }
+        if( flag )
+            cout << "true" << endl;
+        else 
+            cout << "false" << endl;
+    }
+    return 0;
+}
diff --git a/HDOJ/1998_autoAC.cpp b/HDOJ/1998_autoAC.cpp
new file mode 100644
index 0000000..7170259
--- /dev/null
+++ b/HDOJ/1998_autoAC.cpp
@@ -0,0 +1,13 @@
+#include <stdio.h>
+int main(){
+    int n,m,i,j;
+    scanf("%d",&n);
+    while(n-->0){
+        scanf("%d",&m);
+        for(i=0;i<m;i++){
+            for(j=0;j<m;j++)
+                printf("%4d",(i+j-m/2+m)%m*m+(m+i+2*j-m+1)%m+1);
+            printf("\n");
+        }
+    }
+}
diff --git a/HDOJ/1999_autoAC.cpp b/HDOJ/1999_autoAC.cpp
new file mode 100644
index 0000000..be99877
--- /dev/null
+++ b/HDOJ/1999_autoAC.cpp
@@ -0,0 +1,35 @@
+#include<iostream>
+using namespace std;
+bool f(int n)
+{
+    for(int i=2;i<=n/2;i++)
+        if(n%i==0)
+            return false;
+    return true;
+}
+int main()
+{
+    int T;
+    cin>>T;
+    while(T--)
+    {
+        int i,n,x;
+        cin>>n;
+        if(n==2||n==5)cout<<"yes"<<endl;
+        else if(n<5) cout<<"no"<<endl;
+        else
+        for(i=2;i<=(n-1)/2;i++)
+        {
+            if(f(i)&&f(n-1-i)||f(n-1))
+            {
+                cout<<"no"<<endl;
+                x=0;
+                break;
+            }
+            x=1;
+        } 
+        if(x==1)
+            cout<<"yes"<<endl;
+    }
+    return 0;
+}