OJ-Problems-Source/HDOJ/2063_autoAC.cpp

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#include<iostream>
#include<cstring>
#include<cstdio>
const int MAX=1001;
int map[MAX][MAX];
int mark[MAX];
int pipei[MAX];
int n;
int m;
using namespace std;
bool find(int x)
{
int i;
for(i=1;i<=n;i++)
{
if(!mark[i]&&map[x][i])
{
mark[i]=1;
if(pipei[i]==-1||find(pipei[i]))
{
pipei[i]=x;
return true;
}
}
}
return false;
}
int main()
{
int k,i,j,sum;
while(cin>>k&&k)
{
cin>>m>>n;
memset(map,0,sizeof(map));
memset(pipei,-1,sizeof(pipei));
sum=0;
while(k--)
{
cin>>i>>j;
map[i][j]=1;
}
for(i=1;i<=m;i++)
{
memset(mark,0,sizeof(mark));
if(find(i))
sum++;
}
cout<<sum<<endl;
}
return 0;
}