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tle?!!怎么回事呀?#include<iostream> using namespace std; int n,m,a,b,cas; int map[201][201]; int in[201]; int list[201]; bool v[201],flag=0; int solve(int cnt) { int i,j; if(flag==1) return 0; if(cnt==n&&!flag) { for(i=n-1;i>=1;i--) { printf("%d ",list[i]); } printf("%d\n",list[i]); flag=1; return 0; } for(i=n;i>=1;i--) { if(in[i]==0&&!v[i]) { list[cnt]=i; v[i]=1; for(j=1;j<=n;j++) { if(map[i][j]) { in[j]--; } } solve(cnt+1); if(flag==1) return 0; for(j=1;j<=n;j++) { if(map[i][j]) { in[j]++; } } v[i]=0; } } return 0; } int main() { int i,j; scanf("%d",&cas); while(cas--) { flag=0; printf("\n"); memset(in,0,sizeof(in)); memset(map,0,sizeof(map)); memset(v,0,sizeof(v)); memset(list,0,sizeof(list)); scanf("%d%d",&n,&m); while(m--) { scanf("%d%d",&a,&b); if(map[b][a]==0) { map[b][a]=1; in[a]++; } } solve(0); if(!flag) printf("-1\n"); } system("pause"); return 0; } Followed by: Post your reply here: |
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