diff --git a/HDOJ/1018_autoAC.cpp b/HDOJ/1018_autoAC.cpp
new file mode 100644
index 0000000..9af17df
--- /dev/null
+++ b/HDOJ/1018_autoAC.cpp
@@ -0,0 +1,19 @@
+#include<stdio.h>
+#include<math.h>
+int main(){  
+  int i,temp,N;
+  int number;
+  long double member=0;
+  scanf("%d",&N);
+  while(N--){
+      scanf("%d",&number);
+      member=0;
+      for(i=1,temp=0;i<=number;i++){
+          member+=log10(i*1.0);
+          }
+          temp=floor(member)+1;
+          printf("%d\n",temp);
+    }
+  getchar();
+  return 0;
+}
diff --git a/HDOJ/1019_autoAC.cpp b/HDOJ/1019_autoAC.cpp
new file mode 100644
index 0000000..fae3fe5
--- /dev/null
+++ b/HDOJ/1019_autoAC.cpp
@@ -0,0 +1,36 @@
+#include "stdio.h"
+__int64 s[1000];
+__int64 hcf(__int64 a,__int64 b)
+{
+    __int64 r=0;
+    while(b!=0)
+    {
+       r=a%b;
+       a=b;
+       b=r;
+    }
+    return(a);
+} 
+__int64 lcd(__int64 u,__int64 v,__int64 h)
+{
+    return(u*v/h);
+}
+int main(int argc, char* argv[])
+{
+ int n,m,i;
+ while(scanf("%d",&n)==1)
+ {
+  while(n--)
+  {
+   scanf("%d",&m);
+   for(i=0;i<=m-1;i++)
+    scanf("%I64d",&s[i]);
+   for(i=0;i<=m-2;i++)
+   { 
+    s[i+1]=lcd(s[i],s[i+1],hcf(s[i],s[i+1]));
+   }
+   printf("%I64d\n",s[m-1]);
+  }
+ }
+ return 0;
+}
diff --git a/HDOJ/1020_autoAC.cpp b/HDOJ/1020_autoAC.cpp
new file mode 100644
index 0000000..d3a0d2d
--- /dev/null
+++ b/HDOJ/1020_autoAC.cpp
@@ -0,0 +1,42 @@
+#include<stdio.h>
+#include<string.h>
+#include<ctype.h>
+char s[10010];
+int main()
+{
+     int n;
+     scanf("%d",&n);
+     getchar();
+     while(n--)
+     {
+          int len,i,j,count=1;
+          memset(s,0,sizeof(s));
+          scanf("%s",s);
+          len=strlen(s);
+          i=0;
+          j=i+1;
+          while(j<=len)
+          {
+               if(s[i]!=s[j])
+               {
+                    if(count==1)
+                    {
+                     printf("%c",s[i]);
+                    }
+                    else
+                    {
+                         printf("%d%c",count,s[i]);
+                       }
+                       i=j;
+                       j++;
+                       count=1;
+                  }
+                  else
+                  {
+                       j++;
+                       count++;
+                     }
+             }
+             printf("\n");
+        }
+}
diff --git a/HDOJ/1021_autoAC.cpp b/HDOJ/1021_autoAC.cpp
new file mode 100644
index 0000000..0afde16
--- /dev/null
+++ b/HDOJ/1021_autoAC.cpp
@@ -0,0 +1,12 @@
+#include <iostream>
+using namespace std;
+int main()
+{
+    int n;
+    while(cin>>n)
+        if(n%8 == 2||n%8 == 6)
+            cout<<"yes"<<endl;
+        else
+            cout<<"no"<<endl;
+    return 0;
+}
diff --git a/HDOJ/1022_autoAC.cpp b/HDOJ/1022_autoAC.cpp
new file mode 100644
index 0000000..e7b8025
--- /dev/null
+++ b/HDOJ/1022_autoAC.cpp
@@ -0,0 +1,46 @@
+#include<stdio.h>
+int main()
+{
+     int n,i,j,k;
+     char in[10],out[10];
+     int flag[20];
+     while(scanf("%d %s %s",&n,in,out)!=EOF)
+     {
+         char stack[1000];
+         int top=-1;
+         i=j=k=0;
+         while(j<n+1&&i<n)
+         {
+             if(stack[top]==out[i]&&top!=-1)
+             {
+                 top--;
+                 flag[k]=0;
+                 k++;
+                 i++;
+                 }
+                 else
+                 {
+                     top++;
+                     flag[k]=1;
+                     k++;
+                     stack[top]=in[j];
+                     j++;
+                     }
+             }
+             if(k!=2*n)
+             printf("No.\n");
+             else
+             {
+                 printf("Yes.\n");
+                 for(i=0; i<n*2; i++)
+                 {
+                     if(flag[i])
+                     printf("in\n");
+                     else
+                     printf("out\n");
+                     }
+                }
+                printf("FINISH\n");
+        }
+        return 0;
+}
diff --git a/HDOJ/1023_autoAC.cpp b/HDOJ/1023_autoAC.cpp
new file mode 100644
index 0000000..e8c4f03
--- /dev/null
+++ b/HDOJ/1023_autoAC.cpp
@@ -0,0 +1,83 @@
+#include<stdio.h>
+#include<string.h>
+int res[101][200] = {0};
+int temp[200] = {0};
+void add(int *x, int *y){
+    int i, t;
+    for(i=0; x[i]!=0&&y[i]!=0; i++){
+        x[i] += y[i] -'0';
+    }
+    for(i; y[i]!=0; i++){
+        x[i] += y[i];
+    }
+    for(t=0; x[t]!=0; t++){
+        if(x[t+1]!=0){
+            x[t+1] += (x[t]-'0')/10;
+        }
+        else{
+            if((x[t]-'0')/10!=0){
+                x[t+1] += (x[t]-'0')/10+'0';
+            }
+            else{
+                x[t+1] = 0;
+            }
+        }
+        x[t] = (x[t]-'0')%10+'0';
+    }
+}
+int* multiple(int *x, int *y){
+    int i, j, length;
+    for(i=0; i<200; i++){
+        temp[i] = 0;
+    }
+    for(i=0; x[i]!=0; i++){
+        for(j=0; y[j]!=0; j++){
+            if(temp[i+j]!=0){
+                temp[i+j] += (x[i]-'0')*(y[j]-'0');
+            }
+            else{
+                temp[i+j] += (x[i]-'0')*(y[j]-'0')+'0';
+            }
+        }
+    }
+    length = 0;
+    while(temp[length]!=0){
+        length++;
+    }
+    for(i=0; i<length; i++){
+        temp[i+1] += (temp[i]-'0')/10;
+        temp[i] = (temp[i]-'0')%10 + '0';
+    }
+    if(temp[length]!=0){
+        temp[length] += '0';
+    }
+    while(temp[length]!=0){
+        if((temp[length]-'0')/10!=0){
+            temp[length+1] += temp[length]/10+'0';
+        }
+        temp[length] = (temp[length]-'0')%10+'0';
+        length++;
+    }
+    return temp;
+}
+int main(){
+    int n, i, j;
+    res[0][0] = '1';
+    res[1][0] = '1';
+    for(i=2; i<=100; i++){
+        for(j=0; j<i; j++){
+            add(res[i], multiple(res[j], res[i-j-1]));
+        }
+    }
+    while(scanf("%d", &n) != EOF){
+        i=199;
+        while(i>=0){
+            if(res[n][i] != 0){
+                printf("%c", res[n][i]);
+            }
+            i--;
+        }
+        printf("\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1024_autoAC.cpp b/HDOJ/1024_autoAC.cpp
new file mode 100644
index 0000000..f9bd373
--- /dev/null
+++ b/HDOJ/1024_autoAC.cpp
@@ -0,0 +1,40 @@
+#include <cstdio>
+#include <iostream>
+const int MAX = 1000005;
+using namespace std;
+int num[MAX], pre_max[MAX]; 
+inline int max(int a, int b)
+{
+    return a > b ? a : b;
+}
+int DP(int n, int m)
+{
+    for(int i = 1; i <= m; ++i)
+    { 
+        int tmp = 0;
+        for(int k = 1; k <= i; ++k)
+            tmp += num[k];
+        pre_max[n] = tmp;
+        for(int j = i+1; j <= n; ++j)
+        {
+            tmp = max(pre_max[j-1], tmp) + num[j];
+            pre_max[j-1] = pre_max[n];
+            pre_max[n] = max(pre_max[n], tmp);         
+        }
+    }
+    return pre_max[n];
+}
+int main()
+{
+    int n, m;
+    while(~scanf("%d%d", &m, &n))
+    {
+        for(int i = 1; i <= n; ++i)
+        {
+            scanf("%d", &num[i]);
+            pre_max[i] = 0;   
+        }
+        printf("%d\n", DP(n, m));
+    }
+    return 0;
+}
diff --git a/HDOJ/1025_autoAC.cpp b/HDOJ/1025_autoAC.cpp
new file mode 100644
index 0000000..7e7ddf3
--- /dev/null
+++ b/HDOJ/1025_autoAC.cpp
@@ -0,0 +1,53 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+int a[500001];
+int dp[500001];
+int f[500001];
+int binary_search(int k, int l, int h)
+{
+    int mid;
+    while (l <= h)
+    {
+        mid = (l + h)/2;
+        if (f[mid] <= k)
+            l = mid + 1;
+        else
+            h = mid - 1;
+    }
+    return h;
+}
+int main()
+{
+    int n;
+    int t = 0;
+    while (scanf("%d", &n) != EOF)
+    {
+        ++t;
+        memset(f, -1, sizeof(f));
+        int i;
+        int tmp1,tmp2;
+        for (i = 0; i < n; ++i)
+        {
+            scanf("%d %d", &tmp1, &tmp2);
+            a[tmp1] = tmp2;
+        }
+        dp[1] = 1;
+        f[1] = a[1];
+        int len = 1;
+        for (i = 2; i <= n; ++i)
+        {
+            int x = binary_search(a[i], 1, len);
+            dp[i] = x + 1;
+            if ( f[i] == -1 || a[i] < f[dp[i]] )
+                f[dp[i]] = a[i];
+            if (dp[i] > len)
+                len = dp[i];
+        }
+        if (len == 1)
+            printf("Case %d:\nMy king, at most %d road can be built.\n\n", t, len);
+        else
+            printf("Case %d:\nMy king, at most %d roads can be built.\n\n", t, len);
+    }
+    return 0;
+}
diff --git a/HDOJ/1026_autoAC.cpp b/HDOJ/1026_autoAC.cpp
new file mode 100644
index 0000000..5abd5d9
--- /dev/null
+++ b/HDOJ/1026_autoAC.cpp
@@ -0,0 +1,128 @@
+#include <cstdio>
+#include <queue>
+#include <cstring>
+using namespace std;
+const int N(103),MAXN(0x6ffffff);
+struct point
+{
+    int x,y;
+    point *next;
+};
+struct path_node
+{
+    int pre_x,pre_y,time;
+};
+int maze[N][N];
+path_node path[N][N];
+point *ans;
+bool inq[N][N];
+queue<point> q;
+int dx[4]={0,0,-1,1},dy[4]={-1,1,0,0};
+int n,m;
+void init()
+{
+    char x;
+    getchar();
+    memset(maze,0,sizeof(maze));
+    memset(path,0,sizeof(path));
+    memset(inq,0,sizeof(inq));
+    for(int i=0;i<n;i++)
+    {
+        for(int j=0;j<m;j++)
+        {
+            scanf("%c",&x);
+            if(x=='X') maze[i][j]=-1;
+            else if(x!='.') maze[i][j]=x-'0';
+            else maze[i][j]=0;
+            path[i][j].time=MAXN;
+        }
+        getchar();
+    }
+    path[0][0].time=0;
+    path[0][0].pre_x=-1;
+}
+inline bool passable(int x,int y)
+{
+    if(x<0||x>n-1||y<0||y>m-1||maze[x][y]==-1)
+        return false;
+    return true;
+}
+void search()
+{
+    point s;
+    s.x=s.y=0;
+    q.push(s);
+    inq[s.x][s.y]=true;
+    while(!q.empty())
+    {
+        point u=q.front();
+        q.pop();
+        inq[u.x][u.y]=false;
+        int nx,ny;
+        for(int i=0;i<4;i++)
+        {
+            nx=u.x+dx[i];
+            ny=u.y+dy[i];
+            if(path[nx][ny].time>path[u.x][u.y].time+maze[nx][ny]+1&&passable(nx,ny))
+            {
+                path[nx][ny].time=path[u.x][u.y].time+maze[nx][ny]+1;
+                path[nx][ny].pre_x=u.x;
+                path[nx][ny].pre_y=u.y;
+                if(!inq[nx][ny])
+                {
+                    point np;
+                    np.x=nx,np.y=ny;
+                    q.push(np);
+                    inq[nx][ny]=true;
+                }
+            }
+        }
+    }
+}
+void print()
+{
+    if(path[n-1][m-1].time!=MAXN)
+    {
+        point *node;
+        int x=n,y=m,t=0;
+        while(x!=-1)
+        {
+            node=new(point);
+            if(ans)
+                node->x=x,node->y=y;
+            else node->x=n-1,node->y=m-1;
+            node->next=ans;
+            ans=node;
+            x=path[node->x][node->y].pre_x;
+            y=path[node->x][node->y].pre_y;
+        }
+        printf("It takes %d seconds to reach the target position, let me show you the way.\n",
+               path[n-1][m-1].time);
+        point *p,*next;
+        for(p=ans;p;p=next)
+        {
+            while(maze[p->x][p->y])
+            {
+                printf("%ds:FIGHT AT (%d,%d)\n",++t,p->x,p->y);
+                maze[p->x][p->y]--;
+            }
+            if(p->next)
+                printf("%ds:(%d,%d)->(%d,%d)\n",++t,p->x,p->y,p->next->x,p->next->y);
+            next=p->next;
+            delete p;
+        }
+        ans=NULL;
+    }
+    else
+        printf("God please help our poor hero.\n");
+    printf("FINISH\n");
+}
+int main()
+{
+    while(scanf("%d%d",&n,&m)!=EOF)
+    {
+        init();
+        search();
+        print();
+    }
+}
diff --git a/HDOJ/1027_autoAC.cpp b/HDOJ/1027_autoAC.cpp
new file mode 100644
index 0000000..7bb4bdc
--- /dev/null
+++ b/HDOJ/1027_autoAC.cpp
@@ -0,0 +1,28 @@
+#include<iostream>
+#include<vector>
+#include<algorithm>
+using namespace std;
+int a[10000],coun,n,m,i;
+int main()
+{
+    while(cin>>n>>m)
+    {
+        for(i=0;i<n;i++)
+        {
+            a[i] = i+1;
+        }
+        vector<int> iv(a,a+n);
+        coun = 1;
+        while(next_permutation(iv.begin(),iv.end()))
+        {
+            coun++;
+            if(coun==m)
+                break;
+        }
+        printf("%d",iv[0]);
+        for(i=1;i<n;i++)
+            printf(" %d",iv[i]);
+        printf("\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1028_autoAC.cpp b/HDOJ/1028_autoAC.cpp
new file mode 100644
index 0000000..10708ed
--- /dev/null
+++ b/HDOJ/1028_autoAC.cpp
@@ -0,0 +1,31 @@
+#include <cstdio>
+#include <iostream>
+using namespace std;
+int main()
+{
+    int n;
+    int c1[125], c2[125];
+    while(~scanf("%d", &n))
+    {
+        for(int i = 0; i <= n; ++i)
+        {
+            c1[i] = 1; 
+            c2[i] = 0;
+        }
+        for(int i = 2; i <= n; ++i)
+        {
+            for(int j = 0; j <= n; ++j)
+            {
+                for(int k = 0; k <= n/i*i; k += i)
+                    c2[j+k] += c1[j];
+            }
+            for(int j = 0; j <= n; ++j)
+            {
+                c1[j] = c2[j];
+                c2[j] = 0;
+            }
+        }
+        printf("%d\n", c1[n]);
+    }
+    return 0;
+}
diff --git a/HDOJ/1029_autoAC.cpp b/HDOJ/1029_autoAC.cpp
new file mode 100644
index 0000000..0a74806
--- /dev/null
+++ b/HDOJ/1029_autoAC.cpp
@@ -0,0 +1,27 @@
+#include<stdio.h>
+ int main()
+{
+    long n,num,cnt,res;
+    while(EOF != scanf("%d",&n))
+    {
+        cnt = 0;
+        while(n--)
+        {
+            scanf("%d",&num);
+            if(0 == cnt)
+            {
+                res = num;
+                cnt++;
+            }
+            else
+            {
+                if(res == num)
+                    cnt++;
+                else
+                    cnt--;
+            }
+        }
+        printf("%d\n",res);
+    }
+    return 0;
+}
diff --git a/HDOJ/1030_autoAC.cpp b/HDOJ/1030_autoAC.cpp
new file mode 100644
index 0000000..f0e801d
--- /dev/null
+++ b/HDOJ/1030_autoAC.cpp
@@ -0,0 +1,40 @@
+#include <iostream>
+#include <cmath>
+using namespace std;
+struct Note
+{
+    int x;
+    int y;
+    int z;
+};
+int main()
+{
+    Note a,b;
+    int m,n;
+while(cin>>m>>n)
+{
+    int sa=0;
+    int sb=0;
+    int k;
+    int t=ceil(sqrt(m));
+    a.x=t;
+    k=(m-(t-1)*(t-1))/2;
+    a.y=t-k;
+    k=((2*t-1)-m+(t-1)*(t-1))/2;
+    a.z=t-k;
+    if((2*t-1-m+(t-1)*(t-1))%2==0)  sa=1;
+    if(sa==0) a.z=a.z-1;
+    t=ceil(sqrt(n));
+    b.x=t;
+    k=(n-(t-1)*(t-1))/2;
+    b.y=t-k;
+    k=((2*t-1)-n+(t-1)*(t-1))/2;
+    b.z=t-k;
+    if((2*t-1-n+(t-1)*(t-1))%2==0)  sb=1;;
+    if(sb==0)  b.z=b.z-1;
+    int ans=0;
+    ans=abs(a.x-b.x)+abs(a.y-b.y)+abs(a.z-b.z);
+    cout<<ans<<endl;
+}
+    return 0;
+}
diff --git a/HDOJ/1031_autoAC.cpp b/HDOJ/1031_autoAC.cpp
new file mode 100644
index 0000000..5d3f707
--- /dev/null
+++ b/HDOJ/1031_autoAC.cpp
@@ -0,0 +1,52 @@
+#include<iostream>
+#include<stdio.h>
+#include<fstream>
+using namespace std;
+struct Node{
+int num;
+double times;
+};
+Node T[1000];
+int cmp1( const void *a , const void *b )
+{
+struct Node *c = (Node *)a;
+struct Node *d = (Node *)b;
+if(c->times != d->times) return d->times - c->times;
+}
+int cmp2( const void *a , const void *b )
+{
+struct Node *c = (Node *)a;
+struct Node *d = (Node *)b;
+return c->num > d->num ? -1 : 1 ;
+}
+int main()
+{
+    int i,j,k,n,m;
+    double temp;
+    while(EOF != scanf("%d %d %d",&n,&m,&k))
+    {
+        for(i=0;i<m;i++)
+        {
+            T[i].num = i+1 ;
+            T[i].times = 0;
+        }
+        for(i=0;i<n;i++)
+        {
+            for(j=0;j<m;j++)
+            {
+                scanf("%lf",&temp);
+                T[j].times += temp;
+            }
+        }
+        qsort(T,m,sizeof(T[0]),cmp1);
+        qsort(T,k,sizeof(T[0]),cmp2);
+        for(i=0;i<k;i++)
+        {
+            printf("%d",T[i].num);
+            if(i!= k-1)
+                printf(" ");
+        }
+        printf("\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1032_autoAC.cpp b/HDOJ/1032_autoAC.cpp
new file mode 100644
index 0000000..125637d
--- /dev/null
+++ b/HDOJ/1032_autoAC.cpp
@@ -0,0 +1,40 @@
+#include <iostream>
+using namespace std;
+#define MAXNUM 1000000 + 1
+ int result[MAXNUM];
+ int main()
+ {
+   int beg,end,max,count,temp;
+   while(cin>>beg>>end)
+   {
+       cout<<beg<<" "<<end<<" ";
+       if(beg > end)
+       {
+           temp = beg;beg = end;end = temp;
+       }
+       max = count = 0;
+       for(int t = beg;t <= end;++t)
+       {
+           if(result[t])
+               count = result[t];
+           else
+           {
+               temp = t;
+               count = 1;
+               while(temp != 1)
+               {
+                   if(temp%2 == 0)
+                       temp = temp/2;
+                   else
+                       temp = 3*temp + 1;
+                   ++count;
+               }
+               result[t] = count;
+           }
+           if(count > max)
+               max = count;
+       }
+       cout<<max<<endl;
+   }
+   return 0;
+}
diff --git a/HDOJ/1033_autoAC.cpp b/HDOJ/1033_autoAC.cpp
new file mode 100644
index 0000000..c7d2d66
--- /dev/null
+++ b/HDOJ/1033_autoAC.cpp
@@ -0,0 +1,66 @@
+#include <iostream>   
+#include <string>   
+using namespace std;  
+int main()  
+{  
+    string input;  
+    while (cin>>input)  
+    {  
+        cout<<"300 420 moveto"<<endl;  
+        cout<<"310 420 lineto"<<endl;  
+        int x=310,y=420;  
+        int len=input.length();  
+        int flag=1;      
+        for(int i=0;i<len;i++)  
+        {   
+            if(input[i]=='A')  
+            {  
+                switch(flag)  
+                {  
+                    case 1:  
+                        y-=10;  
+                        flag=2;  
+                        break;  
+                    case 2:  
+                        x-=10;  
+                        flag=3;  
+                        break;  
+                    case 3:  
+                        y+=10;  
+                        flag=4;  
+                        break;  
+                    case 4:  
+                        x+=10;  
+                        flag=1;  
+                        break;  
+                }  
+                cout<<x<<" "<<y<<" lineto"<<endl;  
+            }  
+            else 
+            {  
+                switch(flag)  
+                {  
+                case 1:  
+                    y+=10;  
+                    flag=4;  
+                    break;  
+                case 2:  
+                    x+=10;  
+                    flag=1;  
+                    break;  
+                case 3:  
+                    y-=10;  
+                    flag=2;  
+                    break;  
+                case 4:  
+                    x-=10;  
+                    flag=3;  
+                    break;  
+                }  
+                cout<<x<<" "<<y<<" lineto"<<endl;  
+            }  
+        }  
+        cout<<"stroke\nshowpage"<<endl;  
+    }  
+    return 0;  
+}
diff --git a/HDOJ/1034_autoAC.cpp b/HDOJ/1034_autoAC.cpp
new file mode 100644
index 0000000..a323a37
--- /dev/null
+++ b/HDOJ/1034_autoAC.cpp
@@ -0,0 +1,60 @@
+#include<iostream>
+using namespace std;
+int T[500],T1[500],n;
+int check()
+{
+    int temp = T[0];
+    for(int j=1;j<n;j++)
+    {
+        if(temp != T[j])
+            return -1;
+    }
+    return temp;
+}
+bool isEv(int num)
+{
+    return num%2==0?true:false;
+}
+int main()
+{
+    int i,k,cnt,res;
+    while(scanf("%d",&n) && n)
+    {
+        for(i=0;i<n;i++)
+        {
+            scanf("%d",&T[i]);
+        }
+        cnt =0;
+        res = -1;
+        while(1)
+        {
+            res = check();
+            if(res != -1)
+                break;
+            for(i=0;i<n;i++)
+            {
+                T1[i] = T[i]/2;    
+            }
+            for(i=0;i<n;i++)
+            {
+                if(i ==n-1)
+                {
+                    T1[0] += T[n-1]/2;
+                }
+                else
+                {
+                    T1[i+1] += T[i]/2;
+                }
+            }
+            for(i=0;i<n;i++)
+            {
+                if(false == isEv(T1[i]))
+                T1[i]++;
+                T[i] = T1[i];
+            }
+            cnt++;
+        }
+        printf("%d %d\n",cnt,res);
+    }
+    return 0;
+}
diff --git a/HDOJ/1035_autoAC.cpp b/HDOJ/1035_autoAC.cpp
new file mode 100644
index 0000000..6731b78
--- /dev/null
+++ b/HDOJ/1035_autoAC.cpp
@@ -0,0 +1,54 @@
+#include <stdio.h>
+int maze[11][11];
+int r,c,b;
+int idx;
+void step(int x,int y)
+{
+    int t;
+    if(x<0||x>=r||y<0||y>=c)
+    {
+        printf("%d step(s) to exit\n",idx-999);
+        return;
+    }
+    if(maze[x][y]>=1000)
+    {
+        printf("%d step(s) before a loop of %d step(s)\n",maze[x][y]-1000,idx-maze[x][y]+1);
+        return;
+    }
+    t=maze[x][y];
+    idx++;
+    maze[x][y]=idx;
+    switch (t)
+    {
+    case 'N':
+        step(x-1,y);
+        break;
+    case 'S':
+        step(x+1,y);
+        break;
+    case 'E':
+        step(x,y+1);
+        break;
+    case 'W':
+        step(x,y-1);
+        break;
+    }
+}
+int main()
+{
+    int i,j;
+    while (scanf("%d%d",&r,&c),r||c)
+    {
+        scanf("%d",&b);
+        getchar();
+        for (i=0;i<r;i++)
+        {
+            for (j=0;j<c;j++)
+                maze[i][j]=getchar();
+            getchar();
+        }
+        idx=999;
+        step(0,b-1);
+    }
+    return 0;
+}
diff --git a/HDOJ/1036_autoAC.cpp b/HDOJ/1036_autoAC.cpp
new file mode 100644
index 0000000..c47b7f5
--- /dev/null
+++ b/HDOJ/1036_autoAC.cpp
@@ -0,0 +1,43 @@
+#include <cstdio>
+#include <cstring>
+using namespace std;
+int main()
+{
+    int n; 
+    double d; 
+    char* time = new char[8];
+    scanf("%d%lf", &n, &d);
+    int num; 
+    while(scanf("%d", &num) != EOF)
+    {
+        int sec = 0; 
+        int flag = 0;
+        for(int i = 0; i < n; i++)
+        {
+            scanf("%s", time);
+            if(time[0] == '-')
+            {
+                flag = 1;
+            }
+            else
+            {
+                sec += (time[0] - '0') * 3600 + ((time[2] - '0') * 10 + time[3] - '0') * 60 + (time[5] - '0') * 10 + time[6] - '0';
+            }
+        }
+        if(flag == 0)
+        {
+            sec = int(sec * 1.0 / d + 0.5);
+            int minute = sec / 60; 
+            int second = sec % 60; 
+            printf("%3d: %d:", num, minute);
+            if(second < 10)
+                printf("0");
+            printf("%d min/km\n", second);
+        }
+        else
+        {
+            printf("%3d: -\n", num);
+        }
+    }
+    return 0;
+}
diff --git a/HDOJ/1037_autoAC.cpp b/HDOJ/1037_autoAC.cpp
new file mode 100644
index 0000000..c01b506
--- /dev/null
+++ b/HDOJ/1037_autoAC.cpp
@@ -0,0 +1,14 @@
+#include <iostream>
+using namespace std;
+int main()
+{
+ int a, b, c, min;
+ while (cin >> a >> b >> c) {
+  min = a;
+  if (b < min) min = b;
+  if (c < min) min = c;
+  if (min > 168) cout << "NO CRASH" << endl;
+  else cout << "CRASH " << min << endl;
+ }
+ return 0;
+}
diff --git a/HDOJ/1038_autoAC.cpp b/HDOJ/1038_autoAC.cpp
new file mode 100644
index 0000000..0954df4
--- /dev/null
+++ b/HDOJ/1038_autoAC.cpp
@@ -0,0 +1,20 @@
+#include<iostream>
+#include <iomanip>
+using namespace std;
+int main(){
+    const float pi = 3.1415927;
+    float diameter_inch;
+    int circle;
+    float time_sec;
+    int count = 1;
+    while(cin>>diameter_inch>>circle>>time_sec && circle != 0){
+        float distance;
+        float time_hour;
+        float speed;
+        distance = pi * diameter_inch * circle / 5280 / 12;
+        time_hour = time_sec / 3600;
+        speed = distance / time_hour;
+        cout<<"Trip #"<<count++<<": ";
+        cout<<fixed<<setprecision(2)<<distance<<" "<<speed<<endl;
+    }
+}
diff --git a/HDOJ/1039_autoAC.cpp b/HDOJ/1039_autoAC.cpp
new file mode 100644
index 0000000..cd9e8fd
--- /dev/null
+++ b/HDOJ/1039_autoAC.cpp
@@ -0,0 +1,44 @@
+#include <stdio.h>
+#include <string.h>
+int isvowel(char c){
+    if(c=='a'||c=='e'||c=='i'||c=='o'||c=='u')
+        return 1;
+    else
+        return 0;
+}
+int isA(char str[]){
+    int i=0,vowel=0,consonant=0,k;
+    for(k=0;k<strlen(str);k++){
+        if(isvowel(str[k])){
+            i=1;
+            vowel++;
+            consonant=0;
+            if(vowel>2)
+                return 0;
+        }
+        else{
+            consonant++;
+            vowel=0;
+            if(consonant>2)
+                return 0;
+        }
+        if(str[k]!='e'&&str[k]!='o'&&str[k]==str[k+1])
+            return 0;
+    }
+    if(!i)
+        return 0;
+    else
+        return 1;
+}
+int main(){
+    char str[25];
+    while(~scanf("%s",str)){
+        if(!strcmp(str,"end"))
+            break;
+        if(isA(str)){
+            printf("<%s> is acceptable.\n",str);
+        }
+        else
+            printf("<%s> is not acceptable.\n",str);
+    }
+}
diff --git a/HDOJ/1040_autoAC.cpp b/HDOJ/1040_autoAC.cpp
new file mode 100644
index 0000000..38b44cc
--- /dev/null
+++ b/HDOJ/1040_autoAC.cpp
@@ -0,0 +1,23 @@
+#include <iostream>
+#include <algorithm>
+using namespace std;
+int main ()
+{
+ int t, n, i;
+ int *d;
+ cin >> t;
+ while (t--) {
+  cin >> n;
+  d = (int *)malloc(sizeof(int)*n);
+  for (i = 0; i < n; i++) {
+   cin >> d[i];
+  }
+  sort (d, d+n);
+  cout << d[0];
+  for (i = 1; i < n; i++) {
+   cout << " " << d[i]; 
+  }
+  cout << endl;
+ }
+ return 0;
+}
diff --git a/HDOJ/1041_autoAC.cpp b/HDOJ/1041_autoAC.cpp
new file mode 100644
index 0000000..0d9cbb7
--- /dev/null
+++ b/HDOJ/1041_autoAC.cpp
@@ -0,0 +1,29 @@
+#include<iostream>
+#include<string>
+using namespace std;
+string add(string s1,string s2){ 
+       if(s1.length()<s2.length()){
+            string temp=s1;
+            s1=s2;
+            s2=temp;
+       }
+       for(int i=s1.length()-1,j=s2.length ()-1;i>=0;i--,j--){
+            s1[i]=char(s1[i]+( j>=0 ? s2[j]-'0' : 0));
+            if(s1[i]-'0'>=10) {
+                s1[i]=char( (s1[i]-'0')%10+'0' );
+                if(i) s1[i-1]++;
+                else  s1="1"+s1;
+            }
+       }
+       return s1;
+}
+string f[1005];
+int main(){
+    int n;
+    f[1]="0"; f[2]="1"; f[3]="1"; f[4]="3"; f[5]="5"; f[6]="11";
+    for(int i=7;i<=1004;i++)
+        f[i]=add( f[i-1], add(f[i-2],f[i-2]) );
+    while(scanf("%d",&n)==1)
+          cout<<f[n]<<endl;
+    return 0;
+}
diff --git a/HDOJ/1042_autoAC.cpp b/HDOJ/1042_autoAC.cpp
new file mode 100644
index 0000000..7f63a54
--- /dev/null
+++ b/HDOJ/1042_autoAC.cpp
@@ -0,0 +1,25 @@
+#include<stdio.h>
+int main()
+{
+    int a[10000];
+    int i,j,c,m,n;
+    while(scanf("%d",&n)!=EOF){
+    a[0]=1;
+    m=0; 
+    for(i=1;i<=n;i++)
+    { 
+        c=0; 
+        for(j=0;j<=m;j++)
+        { 
+        a[j]=a[j]*i+c; 
+        c=a[j]/10000; 
+        a[j]=a[j]%10000; 
+        } 
+    if(c>0) {m++;a[m]=c;} 
+    } 
+    printf("%d",a[m]); 
+    for(i=m-1;i>=0;i--) printf("%4.4d",a[i]);
+    printf("\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1043_autoAC.cpp b/HDOJ/1043_autoAC.cpp
new file mode 100644
index 0000000..eaed359
--- /dev/null
+++ b/HDOJ/1043_autoAC.cpp
@@ -0,0 +1 @@
+ 1  2  3  4  5  6  7  8  9 10 11 12 13 14 15  x
diff --git a/HDOJ/1044_autoAC.cpp b/HDOJ/1044_autoAC.cpp
new file mode 100644
index 0000000..8e835b7
--- /dev/null
+++ b/HDOJ/1044_autoAC.cpp
@@ -0,0 +1,149 @@
+#include<iostream>
+#include<queue>
+using namespace std;
+char map[50][50];
+int distan[12][12];
+int jewels[12][3];
+int mark[50][50];
+int visit[12];
+int sx,sy,ex,ey,dijige,youjige,cancollect,maxjewels,jieshu;
+int u,n,m,t,zhubao,flag;
+struct node
+{
+    int x,y,step;
+}w,p;
+int dir[4][2]={1,0,-1,0,0,1,0,-1};
+int bfs(int qx,int qy,int mx,int my)
+{
+    queue<node> q;
+    w.x=qx;w.y=qy;w.step=0;
+    while(!q.empty())
+        q.pop();
+    q.push(w);
+    while(!q.empty())
+    {
+        p=q.front();
+        q.pop();
+        if(p.x==mx&&p.y==my)
+            return p.step;
+        for(int i=0;i<4;i++)
+        {
+            w.x=p.x+dir[i][0];
+            w.y=p.y+dir[i][1];
+            w.step=p.step+1;
+            if(w.x>=0&&w.x<n&&w.y>=0&&w.y<m&&map[w.x][w.y]!='*'&&mark[w.x][w.y]==0)
+            {
+                mark[w.x][w.y]=1;
+                q.push(w);
+            }
+        }
+    }
+    return 1000001;
+}
+void dfs(int weizhi,int step,int jewel)
+{
+    if(step<0) return;
+    if(jieshu==1) return;
+    if(jewel==cancollect&&step>=0&&weizhi==zhubao+1)
+    {
+        maxjewels=jewel;
+        flag=1;
+        jieshu=1;
+        return;
+    }
+    if(weizhi==zhubao+1&&step>=0)
+    {
+        flag=1;
+        if(jewel>maxjewels)
+            maxjewels=jewel;
+        return;
+    }
+    for(int i=0;i<zhubao+2;i++)
+    {
+        if(visit[i]==0)
+        {
+            visit[i]=1;
+            dfs(i,step-distan[weizhi][i],jewel+jewels[i][2]);
+            visit[i]=0;
+        }
+    }
+    return;
+}
+int main()
+{
+    cin>>u;
+    youjige=u;
+    dijige=1;
+    while(u--)
+    {
+        memset(jewels,0,sizeof(jewels));
+        cin>>m>>n>>t>>zhubao;
+        for(int i=0;i<zhubao;i++)
+            cin>>jewels[i][2];
+        memset(distan,1000001,sizeof(distan));
+        memset(mark,0,sizeof(mark));
+        memset(visit,0,sizeof(visit));
+        for(int i=0;i<n;i++)
+        {
+            for(int j=0;j<m;j++)
+            {
+                cin>>map[i][j];
+                if(map[i][j]=='@')
+                {
+                    sx=i;
+                    sy=j;
+                }
+                if(map[i][j]=='<')
+                {
+                    ex=i;
+                    ey=j;
+                }
+                if(map[i][j]>='A'&&map[i][j]<='J')
+                {
+                    jewels[map[i][j]-'A'][0]=i;
+                    jewels[map[i][j]-'A'][1]=j;
+                }
+            }
+        }
+        cancollect=0;
+        for(int i=0;i<zhubao;i++)
+        {
+            distan[zhubao][i]=bfs(sx,sy,jewels[i][0],jewels[i][1]);
+            memset(mark,0,sizeof(mark));
+            distan[zhubao+1][i]=bfs(ex,ey,jewels[i][0],jewels[i][1]);
+            memset(mark,0,sizeof(mark));
+            distan[i][zhubao]=distan[zhubao][i];
+            distan[i][zhubao+1]=distan[zhubao+1][i];
+            if(distan[zhubao][i]!=1000001)
+                cancollect+=jewels[i][2];
+        }
+        distan[zhubao][zhubao+1]=bfs(sx,sy,ex,ey);
+        memset(mark,0,sizeof(mark));
+        distan[zhubao+1][zhubao]=distan[zhubao][zhubao+1];
+        for(int i=0;i<zhubao;i++)
+            for(int j=0;j<zhubao;j++)
+            {
+                if(i<j)
+                {
+                    distan[i][j]=bfs(jewels[i][0],jewels[i][1],jewels[j][0],jewels[j][1]);
+                    memset(mark,0,sizeof(mark));
+                }
+                else
+                    distan[i][j]=distan[j][i];
+            }
+        visit[zhubao]=1;
+        maxjewels=0;
+        flag=0;
+        jieshu=0;
+        dfs(zhubao,t,0);
+        cout<<"Case "<<dijige<<':'<<endl;
+        if(flag==1)
+            cout<<"The best score is "<<maxjewels<<'.'<<endl;
+        else
+            cout<<"Impossible"<<endl;
+        if(dijige<youjige)
+            cout<<endl;
+        dijige++;
+    }
+    return 0;
+}
diff --git a/HDOJ/1045_autoAC.cpp b/HDOJ/1045_autoAC.cpp
new file mode 100644
index 0000000..e506ea9
--- /dev/null
+++ b/HDOJ/1045_autoAC.cpp
@@ -0,0 +1,47 @@
+#include <stdio.h>
+char maze[6][6];
+int num,result;
+bool placeable(int row,int col)
+{
+    int i;
+    i=col-1;
+    while(i>=0&&maze[row][i]!='X')
+        if(maze[row][i--]=='*') return false;
+    i=row-1;
+    while(i>=0&&maze[i][col]!='X')
+        if(maze[i--][col]=='*') return false;
+    return true;
+}
+void dfs(int cnt,int max)
+{
+    int row,col;
+    if(cnt==num*num)
+    {
+        max>result?result=max:1;
+        return;
+    }
+    else
+    {
+        row=cnt/num;
+        col=cnt%num;
+        if(maze[row][col]=='.'&&placeable(row,col))
+        {
+            maze[row][col]='*';
+            dfs(cnt+1,max+1);
+            maze[row][col]='.';
+        }
+        dfs(cnt+1,max);
+    }
+}
+int main()
+{
+    while(scanf("%d",&num)!=EOF&&num)
+    {
+        for(int i=0;i<num;i++)
+            scanf("%s",maze[i]);
+        result=0;
+        dfs(0,0);
+        printf("%d\n",result);
+    }
+    return 0;
+}
diff --git a/HDOJ/1046_autoAC.cpp b/HDOJ/1046_autoAC.cpp
new file mode 100644
index 0000000..03e4b02
--- /dev/null
+++ b/HDOJ/1046_autoAC.cpp
@@ -0,0 +1,23 @@
+#include <iostream>
+#include <cstdlib>
+#include <cstdio>
+#include <cmath>
+using namespace std;
+int main(void)
+{
+    int n;
+    scanf("%d", &n);
+    for (int i = 1; i < n + 1; ++i)
+    {
+        printf("Scenario #%d:\n", i);
+        int s, t;
+        scanf("%d%d",&s,&t);
+        double sum;
+        sum = s*t;
+        if ((s*t)%2)
+            printf("%.2f\n", sum+sqrt(2)-1);
+        else printf("%.2f\n", (double)sum);
+        printf("\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1047_autoAC.cpp b/HDOJ/1047_autoAC.cpp
new file mode 100644
index 0000000..68cc3f9
--- /dev/null
+++ b/HDOJ/1047_autoAC.cpp
@@ -0,0 +1,41 @@
+#include<iostream>
+#include<cstring>
+#include<string>
+#define maxn 300
+using namespace std;
+int numx[maxn],numy[maxn],n;
+string str,tmp;
+string Add(string x,string y){
+    string res="";
+    memset(numx,0,sizeof(numx));
+    memset(numy,0,sizeof(numy));
+    int lenx=x.size(),leny=y.size();
+    int maxlen=lenx>leny ? lenx:leny;
+    for(int i=0;i<lenx;i++)numx[lenx-i-1]=x[i]-'0';
+    for(int i=0;i<leny;i++)numy[leny-i-1]=y[i]-'0';
+    for(int i=0;i<=maxlen;i++){
+        numx[i]+=numy[i];
+        if(numx[i]>9){
+            numx[i+1]+=numx[i]/10;
+            numx[i]%=10;
+        }
+    }
+    int i=maxlen+2;
+    for(;i>0&&!numx[i];)i--;
+    for(;i>=0;i--)res+=numx[i]+'0';
+    return res;
+}
+int main()
+{
+    while(cin>>n){
+        while(n--){
+                string sum="0";
+            while(cin>>str&&str!="0"){
+                sum=Add(sum,str);
+            }
+            cout<<sum<<endl;
+            if(n)cout<<endl;
+        }
+    }
+    return 0;
+}
diff --git a/HDOJ/1048_autoAC.cpp b/HDOJ/1048_autoAC.cpp
new file mode 100644
index 0000000..853f36e
--- /dev/null
+++ b/HDOJ/1048_autoAC.cpp
@@ -0,0 +1,34 @@
+#include <iostream>
+#include <string>
+using namespace std;
+const int LEN = 210;
+char engChars[30] = {"ABCDEFGHIJKLMNOPQRSTUVWXYZ"};
+char aLine[LEN];
+void decipher()
+{
+    for (int i = 0;i < strlen(aLine);i ++)
+    {
+        if (isalpha(aLine[i]))
+        {
+            int offset = (aLine[i] - 'A' + 26 - 5) % 26;
+            aLine[i] = engChars[offset];
+        }
+    }
+}
+int main ()
+{
+    while (gets(aLine))
+    {
+        if (strcmp(aLine,"ENDOFINPUT") == 0)
+            break;
+        while (1)
+        {
+            gets(aLine);
+            if (strcmp(aLine,"END") == 0)
+                break;
+            decipher();
+            printf("%s\n",aLine);        
+        }
+    }
+    return 0;
+}
diff --git a/HDOJ/1049_autoAC.cpp b/HDOJ/1049_autoAC.cpp
new file mode 100644
index 0000000..e335911
--- /dev/null
+++ b/HDOJ/1049_autoAC.cpp
@@ -0,0 +1,7 @@
+#include<stdio.h>
+int main(){
+    int n,u,d,t;
+    while(scanf("%d%d%d",&n,&u,&d)!=-1&&n)
+    printf("%d\n",(n-u)%(u-d)?(2*((n-u)/(u-d)+1)+1):(2*((n-u)/(u-d))+1));
+    return 0;
+}
diff --git a/HDOJ/1050_autoAC.cpp b/HDOJ/1050_autoAC.cpp
new file mode 100644
index 0000000..ad39f88
--- /dev/null
+++ b/HDOJ/1050_autoAC.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <algorithm>
+using namespace std;
+int f[201];
+int main()
+{
+    int t, n, i, j, s, e;
+    cin >> t;
+    while( t-- ){
+        memset( f, 0, sizeof(f) );
+        cin >> n;    
+        for( i=0; i<n; i++ ){
+            cin >> s >> e;    
+            s = (s+1)/2;
+            e = (e+1)/2;
+            if( s > e ){    
+                int temp = s;
+                s = e;
+                e = temp;
+            }
+            for( j=s; j<=e; j++)
+                f[j]++;        
+        }
+        int consume = 0;
+        for( i=1; i<=200; i++ )
+            consume = max( consume, f[i] );
+        cout << consume*10 << endl;
+    }
+    return 0;
+}