用cin cout 0ms。。用scanf(),printf(),16ms；奇怪啦？？
#include<iostream>
using namespace std;
const int maxn = 201;
const int maxm = 201;

int uN, vN;
bool g[maxn][maxn];
int xM[maxn], yM[maxn];
bool chk[maxn];

bool find(int u)
{
	int v;
	for(v=1; v<=vN; v++)
		if(g[u][v] && !chk[v])
		{
			chk[v] = true;
			if(yM[v] == -1 || find(yM[v]))
			{
				yM[v] = u; xM[u] = v;
				return true;
			}
		}
	return false;
}
int MaxMatch()
{
	int u, ret = 0;
	memset(xM, -1, sizeof(xM));
	memset(yM, -1, sizeof(yM));
	for(u=1; u<=uN; u++)
		if(xM[u] == -1)
		{
			memset(chk, false, sizeof(chk));
			if(find(u))
				ret++;
		}
	return ret;
}
int main()
{
	int i, j, k, x, y;
	int ans;
	while(cin>>uN>>vN)		//0ms
	//while(scanf("%d%d",&uN,&vN) != EOF)  //16ms
	{
		memset(g, false, sizeof(g));
		for(x=1; x<=uN; x++)
		{
			cin>>k;
			//scanf("%d",&k);
			for(j=1; j<=k; j++)
			{
				cin>>y;
				//scanf("%d",&y);
				g[x][y] = true;
			}
		}
		ans = MaxMatch();
		cout<<ans<<endl;
		//printf("%d\n",ans);
	}
	return 0;
}