> #include <iostream.h>
> #include <stdio.h>
> #include <string.h>
> #include <ctype.h>
> typedef struct
> {
> 	int par;
> 	int v;
> 	int p;
> }NODE;
> void main(void)
> {
> 	NODE  q[100];
> 	char str[1000],*p;
> 	int n,i,j,k,m,w,r,u;
> 	bool g[50][50];
> 	int  v[100];
> 	__int64  s[41][41],t,ans;
> 	memset(s,0,sizeof(s));
> 	memset(g,0,sizeof(g));
> 	cin>>n;
> 	cin.getline(str,1000,'\n');
> 	for(i=1;i<=n;i++)
> 	{
> 		cin.getline(str,1000,'\n');
> 		p = str;
> 		while(sscanf(p,"%d",&j)!=EOF)
> 		{
> 			g[j][i] = g[i][j] = 1;
> 			s[i][j] |= ((__int64)1<<i)|((__int64)1<<j);
> 			while(p[0]==' ')
> 				p++;
> 			while(isdigit(p[0]))
> 				p++;
> 		}
> 	}
> 	for(i=1;i<=n;i++)
> 		for(j=1;j<=n;j++)
> 		{
> 			if(i==j)
> 			{
> 				s[i][j] |= ((__int64)1<<i);
> 				continue;
> 			}
> 			if(g[i][j])
> 				continue;
> 			memset(v,0,sizeof(v));
> 			k = 1; m = 2;
> 			q[1].v = i;q[1].par=0;q[1].p=1;v[i]=1;
> 			while(1)
> 			{
> 				r = q[k].p;
> 				for(w=1;w<=n;w++)
> 				{
> 					if(g[q[k].v][w] && v[w]==0)
> 					{
> 						q[m].v = w;
> 						q[m].par = k;
> 						q[m].p = r + 1;
> 						v[w] = 1;
> 						m++;
> 					}
> 				}
> 				if(v[j]==1)
> 				{
> 					for(w=k;w<m;w++)
> 					{
> 						if(q[w].p>r)
> 							break;
> 						if(g[q[w].v][j] == 1)
> 						{
> 							 u = w;
> 							while(u!=0 && q[u].p!=0)
> 							{
> 								q[u].p = 0;
> 								u = q[u].par;
> 							}
> 						}
> 					}
> 					break;
> 				}
> 				k++;
> 			}
> 			s[i][j] |= ((__int64)1<<i)||((__int64)1<<j);
> 			for(w=1;w<m;w++)
> 			{
> 				if(q[w].p == 0)
> 					s[i][j] |= ((__int64)1<<q[w].v);
> 			}
> 		}
> 	for(i=1;i<=n;i++)
> 		for(j=1;j<=n;j++)
> 		{
> 			s[i][j] |= s[j][i];////////////还是不行
> 			s[j][i] |= s[i][j];
> 		}
> 	t = ((__int64)1<<(n+1)) - 1;
> 	cin>>m;
> 	cin.getline(str,1000,'\n');
> 	while(m-- >0)
> 	{
> 		cin.getline(str,1000,'\n');
> 		p = str; k = 0;
> 		while(sscanf(p,"%d",&v[k++])!=EOF)
> 		{
> 			while(p[0]==' ')
> 				p++;
> 			while(isdigit(p[0]))
> 				p++;
> 		}
> 		ans = 0;
> 		for(i=0;i<k;i++)
> 			for(j=0;j<k;j++)
> 				ans |= s[v[i]][v[j]];
> 		if(ans>=t)
> 			cout<<"yes"<<endl;
> 		else
> 			cout<<"no"<<endl;
> 	}
> 
> }