BZOJ 1433 ZJOI2009 假期的宿舍

 1 #include <cstdio>
 2 #include <algorithm>
 3 #include <cstring>
 4  
 5 bool used[105],bed[233][233];
 6 bool IsStudent[105];
 7 int fa[105],GoHome[105];
 8 int n,m;
 9 int T;
10  
11 bool find(int x){
12     for(int i=1;i<=n;i++){
13         if(!used[i] && bed[x][i]){
14             used[i]=true;
15             if(!fa[i] || find(fa[i])){
16                 fa[i]=x;
17                 return 1;
18             }
19         }
20     }
21     return 0;
22 }
23  
24 int main(){
25     scanf("%d",&T);
26     while(T--){
27         memset(bed,0,sizeof(bed));
28         memset(fa,0,sizeof(fa));
29         memset(IsStudent,0,sizeof(IsStudent));
30         memset(GoHome,0,sizeof(GoHome));
31         int ans = 0,tot=0;
32         scanf("%d",&n);
33         for(int i=1;i<=n;i++){
34             scanf("%d",&IsStudent[i]);
35         }
36         for(int i=1;i<=n;i++){
37             int x;
38             scanf("%d",&x);
39             if(IsStudent[i]){
40                 if(x==1) GoHome[i]=1,ans++;
41             }
42         }
43         for(int i=1;i<=n;i++){
44             for(int j=1;j<=n;j++){
45                 int x;
46                 scanf("%d",&x);
47                 if(GoHome[i]) continue;
48                 if(i==j && IsStudent[i]){
49                     bed[i][i]=1;
50                     continue;
51                 }
52                 if(x){
53                     if(GoHome[i] && !GoHome[j]) bed[j][i]=1;
54                     else if(!GoHome[i] && GoHome[j]) bed[i][j]=1;
55                     else if(!GoHome[i] && !GoHome[j] ){
56                          if(IsStudent[i] && IsStudent[j]){
57                             bed[i][j]=1;
58                             bed[j][i]=1;
59                          }
60                          else if(!IsStudent[i] && IsStudent[j]) bed[i][j]=1;
61                          else if(IsStudent[i] && !IsStudent[j]) bed[j][i]=1;
62                     }
63                 }
64             }
65         }
66         /*for(int i=1;i<=n;i++)
67         {
68             for(int j=1;j<=n;j++)
69             {
70                 printf("i:%d j:%d bed:%d\n",i,j,bed[i][j]);
71             }
72         }*/
73         for(int i=1;i<=n;i++){
74             memset(used,0,sizeof(used));
75             if(find(i)) tot++;
76         }
77         if(tot>=n-ans){
78                 printf("^_^\n");
79         }
80         else printf("T_T\n");   
81     }
82 }