diff --git a/HDOJ/1051_autoAC.cpp b/HDOJ/1051_autoAC.cpp
new file mode 100644
index 0000000..163c62e
--- /dev/null
+++ b/HDOJ/1051_autoAC.cpp
@@ -0,0 +1,61 @@
+#include <iostream>
+#include <cstdio>
+#include <cstdlib>
+#include <cmath>
+#include <cstring>
+#include <algorithm>
+#include <map>
+#define MAXINT 99999999
+#define MININT -1
+using namespace std;
+struct Node{
+       int l;
+       int w;
+       }node[5000+4];
+int vis[5000+4];
+bool cmp(Node x,Node y)
+{if(x.l<y.l)
+ return true;
+ else if(x.l==y.l)
+ {if(x.w<=y.w)
+  return true;
+ }
+ return false;
+}
+int main()
+{
+    int n;
+    int m;
+    int i,j,k;
+    scanf("%d",&m);
+    while(m--)
+    {
+              scanf("%d",&n);
+              for(i=0;i<n;i++)
+              {
+                              scanf("%d%d",&node[i].l,&node[i].w);
+              }           
+              sort(node,node+n,cmp);            
+              for(i=0;i<n;i++)
+              {vis[i]=0;}
+              int countn=0;
+              for(i=0;i<n;i++)
+              {
+                              if(vis[i])
+                              continue;
+                              vis[i]=1;
+                              countn++;
+                              int pre=i;
+                              for(j=i+1;j<n;j++)
+                              {             
+                                              if(vis[j]==0)
+                                              {
+                                                           if(node[j].w>=node[pre].w)
+                                                           {vis[j]=1;pre=j;}
+                                              }
+                              }
+              }
+              cout<<countn<<endl;
+    }
+    return 0;
+}
diff --git a/HDOJ/1052_autoAC.cpp b/HDOJ/1052_autoAC.cpp
new file mode 100644
index 0000000..8f5d13a
--- /dev/null
+++ b/HDOJ/1052_autoAC.cpp
@@ -0,0 +1,61 @@
+#include<stdio.h>
+#include<algorithm>
+using std::sort;
+int cmp( int a, int b )
+{
+    if( a < b ) return true;
+    return false;
+}
+int main()
+{
+    int t[1005], k[1005], n, i, j, c;
+    while( scanf( "%d", &n ), n )
+    {
+        c = 0;
+        for( i = 0; i < n; i ++ )
+        scanf( "%d", &t[i] );
+        sort( t, t+n, cmp );
+        for( i = 0; i < n; i ++ )
+        scanf( "%d", &k[i] );
+        sort( k, k + n, cmp );
+         i= j = 0;
+         int flag1= n-1, flag2 = n-1;
+        while( i <= flag1 )
+        {
+            if( t[flag1] > k[flag2] )
+            {
+                ++c;
+                --flag1;
+                --flag2;
+            }
+            else if( t[flag1] == k[flag2] )
+            {
+                if( t[i]>k[j] )
+                {
+                    ++c;
+                    ++i;
+                    ++j;
+                }
+                else if( t[i] == k[j] )
+                {
+                    if( t[i] < k[flag2] ) --c; 
+                    ++i;
+                    --flag2;
+                }
+                else if( t[i] < k[j] )
+                {
+                    --c;
+                    ++i;
+                    --flag2;
+                }
+            }
+            else
+            {
+                --c;
+                ++i;
+                --flag2;
+            }
+        } 
+        printf( "%d\n", c*200 );
+    }
+}
diff --git a/HDOJ/1053_autoAC.cpp b/HDOJ/1053_autoAC.cpp
new file mode 100644
index 0000000..8821e22
--- /dev/null
+++ b/HDOJ/1053_autoAC.cpp
@@ -0,0 +1,104 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<string.h>
+#include<queue>
+using namespace std;
+int cmp(const void *a, const void *b)
+{
+    return *(char*)a - *(char*)b;
+}
+class TreeNode
+{
+public:
+    char ch;
+    int count;
+    int depth;
+    TreeNode *leftChild, *rightChild;
+    TreeNode()
+    {
+        ch = '\0';
+        count = 0;
+        depth = 0;
+        leftChild = NULL;
+        rightChild = NULL;
+    }
+    friend bool  operator<(const TreeNode &a, const TreeNode &b)
+    {
+        return    a.count > b.count;
+    }
+};
+priority_queue<TreeNode> que;
+queue<TreeNode> q;
+int res;
+void hoffman()
+{
+    TreeNode *root, *a, *b, *c, newNode;
+    while(que.size() > 1){
+        a = new TreeNode;
+        *a = que.top();
+        que.pop();
+        b = new TreeNode;
+        *b = que.top();
+        que.pop();
+        c = new TreeNode;
+        c->count = a->count + b->count;
+        c->leftChild = a;
+        c->rightChild = b;
+        que.push(*c);
+    }
+    root = new TreeNode;
+    *root = que.top();
+    root->depth = 0;
+    que.pop();
+    q.push(*root);
+    while(!q.empty()){
+        newNode = q.front();
+        q.pop();
+        if(newNode.leftChild){
+            newNode.leftChild->depth = newNode.depth + 1;
+            q.push(*newNode.leftChild);
+        }
+        if(newNode.rightChild){
+            newNode.rightChild->depth = newNode.depth + 1;
+            q.push(*newNode.rightChild);
+        }
+        if(!newNode.leftChild && !newNode.rightChild){
+            res += newNode.depth * newNode.count;
+        }
+    }
+}
+int main()
+{
+    int i, j, len, count;
+    char str[1005];
+    while(scanf("%s", str)!=EOF && strcmp("END", str)!=0){
+        len = strlen(str);
+        qsort(str, len, sizeof(char), cmp);
+        TreeNode t;
+        count = 1;
+        t.ch = str[0];
+        for(i=1; i<len; i++){           
+            if(str[i-1] == str[i]){
+                count++;
+            }
+            else{
+                t.count = count;
+                que.push(t);
+                t.ch = str[i];
+                count = 1;
+            }
+        }
+        t.count = count;
+        que.push(t);
+        res = 0;
+        if(que.size() == 1){
+            printf("%d %d 8.0\n", 8*len, len);
+            que.pop();
+        }
+        else{
+            hoffman();
+            printf("%d %d %.1lf\n", 8*len, res, 8*len*1.0/res);
+        }
+    }
+    return 0;
+}
diff --git a/HDOJ/1054_autoAC.cpp b/HDOJ/1054_autoAC.cpp
new file mode 100644
index 0000000..a8f2b43
--- /dev/null
+++ b/HDOJ/1054_autoAC.cpp
@@ -0,0 +1,63 @@
+#include<iostream>
+#include<vector>
+#include<string.h>
+using namespace std;
+bool used[1510];
+int con[1510];
+vector<int> edges[1510];
+bool find(int x)
+{
+    for (int i = 0; i < edges[x].size(); i++)
+    {
+        if (!used[edges[x][i]])
+        {
+            used[edges[x][i]] = true;
+            if (con[edges[x][i]] == -1 || find(con[edges[x][i]]))
+            {
+                con[edges[x][i]] = x;
+                return true;
+            }
+        }
+    }
+    return false;
+}
+int match(int n)
+{
+    int res = 0;
+    memset(con, -1, sizeof(con));
+    for (int i = 0; i < n; i++)
+    {
+        memset(used, false, sizeof(used));
+        if (find(i))
+            res++;
+    }
+    return res;
+}
+int main()
+{
+    int n;
+    while (cin >> n)
+    {
+        memset(used, false, sizeof(used));
+        for (int i = 0; i < n; i++)
+            edges[i].clear();
+        for (int i = 0; i < n; i++)
+        {
+            int no;
+            cin >> no;
+            char c;
+            cin >> c >> c;
+            int en;
+            cin >> en >> c;
+            for (int j = 0; j < en; j++)
+            {
+                int p;
+                cin >> p;
+                edges[no].push_back(p);
+                edges[p].push_back(no);
+            }
+        }
+        cout << (match(n)/2) << endl;
+    }
+    return 0;
+}
diff --git a/HDOJ/1055_autoAC.cpp b/HDOJ/1055_autoAC.cpp
new file mode 100644
index 0000000..236569b
--- /dev/null
+++ b/HDOJ/1055_autoAC.cpp
@@ -0,0 +1,43 @@
+#include "stdio.h"
+#include "string"
+#define maxn 1001
+struct H{
+    int val;
+    int cost;
+    int time;
+    void clear() {
+        val = cost = time = 0;
+    }
+}hh[maxn];
+int father[maxn];
+int main() {
+    int n,r,i;
+    while(scanf("%d%d",&n,&r),n+r) {
+        for(i =1 ; i <= n ; i ++) {
+            scanf("%d",&hh[i].cost);
+            hh[i].val = hh[i].cost;
+            hh[i].time = 1;
+        }
+        for(i = 1; i < n ; i ++) {
+            int a,b;
+            scanf("%d%d",&a,&b);
+            father[b] = a;
+        }
+        while(true) {
+            int idx = 0;
+            for(i = 1 ; i <= n ; i ++) {
+                if(i != r && hh[i].time && (idx == 0 || hh[idx].val * hh[i].time < hh[i].val * hh[idx].time)) {
+                    idx = i;
+                }
+            }
+            if(idx == 0)    break;
+            int f = father[idx];
+            hh[f].cost += hh[idx].cost + hh[idx].val * hh[f].time;
+            hh[f].val += hh[idx].val;
+            hh[f].time += hh[idx].time;
+            hh[idx].clear();
+        }
+        printf("%d\n",hh[r].cost);
+    }
+    return 0;
+}
diff --git a/HDOJ/1056_autoAC.cpp b/HDOJ/1056_autoAC.cpp
new file mode 100644
index 0000000..746ca83
--- /dev/null
+++ b/HDOJ/1056_autoAC.cpp
@@ -0,0 +1,24 @@
+#include <cstdlib>
+#include <iostream>
+using namespace std;
+int main()
+{
+    double examples[300],enter;
+    int numDenominator=3,circleA;
+    examples[0]=1.0/2.0;
+    for(circleA=1;circleA<280;circleA++){
+      examples[circleA]=examples[circleA-1]+1.0/(double)(numDenominator++);
+    }
+    while(cin>>enter){
+        if(0.00==enter){
+         break;
+        }
+        for(circleA=0;circleA<280;circleA++){
+          if(examples[circleA]>=enter){
+               cout<<circleA+1<<" card(s)"<<endl;
+               break;
+          }
+        }
+    }
+    return 0;
+}
diff --git a/HDOJ/1057_autoAC.cpp b/HDOJ/1057_autoAC.cpp
new file mode 100644
index 0000000..6d03304
--- /dev/null
+++ b/HDOJ/1057_autoAC.cpp
@@ -0,0 +1,48 @@
+#include <iostream>
+using namespace std;
+const int Dir[][2]={{-1,0},{1,0},{0,-1},{0,1}};
+const char density[]=".!X#";
+int D[16];
+int Map[20][20],tmp[20][20];
+int main()
+{
+    int T,day,i,j,k,d,x,y,index;
+    cin>>T;
+    for(int t=1;t<=T;++t)
+    {
+        cin>>day;
+        for(i=0;i<16;++i) cin>>D[i];
+        for(i=0;i<20;++i)
+            for(j=0;j<20;++j)
+                cin>>Map[i][j];
+        for(k=0;k<day;++k)
+        {
+            for(i=0;i<20;++i)
+                for(j=0;j<20;++j)
+                {
+                    index=Map[i][j];
+                    for(d=0;d<4;++d)
+                    {
+                        x = i+Dir[d][0];
+                        y = j+Dir[d][1];
+                        if(x>=0&&x<20&&y>=0&&y<20)
+                            index += Map[x][y];
+                    }
+                    tmp[i][j] = Map[i][j]+D[index];
+                    if(tmp[i][j]>3) tmp[i][j]=3;
+                    else if(tmp[i][j]<0) tmp[i][j]=0;
+                }
+            for(i=0;i<20;++i)
+                for(j=0;j<20;++j)
+                    Map[i][j] = tmp[i][j];
+        }
+        for(i=0;i<20;++i)
+        {
+            for(j=0;j<20;++j)
+                cout<<density[Map[i][j]];
+            cout<<endl;
+        }
+        if(t<T)cout<<endl;
+    }
+    return 0;
+}
diff --git a/HDOJ/1058_autoAC.cpp b/HDOJ/1058_autoAC.cpp
new file mode 100644
index 0000000..24d954c
--- /dev/null
+++ b/HDOJ/1058_autoAC.cpp
@@ -0,0 +1,39 @@
+#include<iostream>
+#include<cstdio>
+#include<cstring>
+using namespace std;
+int min(int a,int b)
+{
+        if(a>b) return b;
+        else return a;
+}
+int main()
+{
+        long int a[5888];
+        long int s1,s2,s3,s4,t,n;
+        s1 = s2 = s3 = s4 =1;
+        a[1] = 1;
+        for(int i=2;i<5888;i++)
+        {
+                t = min(min(min(a[s1]*2,a[s2]*3),a[s3]*5),a[s4]*7);
+                if(t == a[s1]*2) s1++;
+                if(t == a[s2]*3) s2++;
+                if(t == a[s3]*5) s3++;
+                if(t == a[s4]*7) s4++;
+                a[i] = t;
+        }
+        while(scanf("%ld",&n))
+        {
+          if(n==0)
+          break;
+          if(n%10==1&&n%100!=11)
+          printf("The %ldst humble number is %ld.\n",n,a[n]);
+          else if(n%10==2&&n%100!=12)
+          printf("The %ldnd humble number is %ld.\n",n,a[n]);
+          else if(n%10==3&&n%100!=13)
+          printf("The %ldrd humble number is %ld.\n",n,a[n]);
+          else
+          printf("The %ldth humble number is %ld.\n",n,a[n]);
+        }
+        return 0;
+}
diff --git a/HDOJ/1059_autoAC.cpp b/HDOJ/1059_autoAC.cpp
new file mode 100644
index 0000000..07b1fd2
--- /dev/null
+++ b/HDOJ/1059_autoAC.cpp
@@ -0,0 +1,46 @@
+#include<stdio.h>
+#include<limits.h>
+#define maxn 444444//(1+2+3+4+5+6)*20000=420000
+int bag[maxn]={0};
+int main()
+{
+    int w[111],n[7],cnt=1;//2^15(>20000)*6=90
+    while(scanf("%d%d%d%d%d%d",&n[1],&n[2],&n[3],&n[4],&n[5],&n[6])&&(n[1]||n[2]||n[3]||n[4]||n[5]||n[6]))
+    {
+        int i,j,k=1,sum=0;
+        printf("Collection #%d:\n",cnt++);
+        for(i=1;i<=6;i++)
+        {
+            int tmp=1;
+            sum+=n[i]*i;
+            while(n[i]>tmp)
+            {
+                w[k++]=tmp*i;
+                n[i]-=tmp;
+                tmp<<=1;
+            }
+            w[k++]=n[i]*i;
+        }
+        if(sum&1)
+        {
+            printf("Can't be divided.\n\n");
+            continue;
+        }
+        sum/=2;
+        for(i=1;i<=sum;i++)
+            bag[i]=INT_MIN;
+        for(i=1;i<k;i++)
+        {
+            for(j=sum;j>=w[i];j--)
+            {
+                if(bag[j]<bag[j-w[i]]+w[i])
+                    bag[j]=bag[j-w[i]]+w[i];
+            }
+        }
+        if(bag[sum]>=0)
+            printf("Can be divided.\n\n");
+        else
+            printf("Can't be divided.\n\n");
+    }
+    return 0;
+}
diff --git a/HDOJ/1060_autoAC.cpp b/HDOJ/1060_autoAC.cpp
new file mode 100644
index 0000000..dc1a72e
--- /dev/null
+++ b/HDOJ/1060_autoAC.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <math.h>
+using namespace std;
+int main()
+{
+    int t;
+    while(cin>>t)
+    {
+        while(t--)
+        {
+            unsigned long n;
+            cin>>n;
+            double x=n*log10(n*1.0);
+            x-=(__int64)x;
+            int a=pow(10.0, x);
+            cout<<a<<endl;
+        }
+    }
+    return 0;
+}