【bzoj1433】[ZJOI2009]假期的宿舍

按要求连边,跑匈牙利

#include<algorithm>
#include<iostream>
#include<cstdlib>
#include<cstring>
#include<cstdio>
#include<cmath>
using namespace std;
 
#define N 110
 
int T,n;
 
int sc[N],go[N];
int a[N][N];
int ly[N],vis[N];
 
struct edge
{
    int to,next;
}e[20010];
int head[N];
int cnt;
 
int getint()
{
    int w=0,q=0;
    char c=getchar();
    while ((c<'0' || c>'9') && c!='-') 
        c=getchar();
    if (c=='-') 
        q=1,c=getchar();
    while (c>='0' && c<='9') 
        w=w*10+c-'0',c=getchar();
    return q?-w:w;
}  
 
void link(int x,int y)
{
    e[++cnt]=(edge){y,head[x]};
    head[x]=cnt;
}
 
bool find(int x)
{
    for (int i=head[x];i;i=e[i].next)
    {
        int t=e[i].to;
        if (!vis[t])
        {
            vis[t]=1;
            if (!ly[t] || find(ly[t]))
            {
                ly[t]=x;
                return true;
            }
        }
    }
    return false;
}
 
int main()  
{  
    T=getint();  
    while (T--)  
    {  
        n=getint();  
        for (int i=1;i<=n*2;i++)  
            head[i]=0,ly[i]=0;  
        cnt=0;  
        for (int i=1;i<=n;i++)  
            sc[i]=getint();  
        for (int i=1;i<=n;i++)  
        {  
            go[i]=getint();  
            if (sc[i] && !go[i])
                link(i,n+i);  
        }  
        for (int i=1;i<=n;i++)  
        {  
            for (int j=1;j<=n;j++)  
                a[i][j]=getint();  
            if (!sc[i] || (sc[i] && !go[i]))  
            {  
                for (int j=1;j<=n;j++)  
                    if (a[i][j] && sc[j]) 
                        link(i,j+n);  
            }  
        }  
        int f=1;  
        for (int i=1;i<=n;i++)  
            if (!sc[i] || (sc[i] && !go[i]))  
            {  
                for (int j=1;j<=n*2;j++)  
                    vis[j]=0;  
                if (!find(i))
                {
                    f=0;
                    break;
                }  
            }  
        if (f) 
            puts("^_^");  
        else
            puts("T_T");  
    }  
    return 0;  
}  

  

posted @ 2016-08-11 20:51  Yangjiyuan  阅读(131)  评论(0编辑  收藏