This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <iostream>
#include <vector>
#include <set>
using namespace std;
bool bos;
void dfs(int a,int ori,vector<bool>& visto,vector<set<int> >& v,vector<long long int>& acumulacion,int parent){
bos=false;
visto[a]=true;
for(int x: v[a]){
if(!visto[x]){
bos=true;
dfs(x,ori,visto,v,acumulacion,a);
}
}
acumulacion[parent]+=acumulacion[a];
//cout<<acumulacion[a]<<' '<<a<<'\n';
if(a==ori)return;
}
int main(){
cin.tie(0);
cout.tie(0);
ios::sync_with_stdio(false);
long long int n,k,mini=1e18,a;
cin>>n;
vector<set<int> >v (n,set<int>());
vector<long long int> acumulacion;
vector<bool>visto;
for(int i=0;i<n;i++){
cin>>k;
while(k--){
cin>>a;
a--;
v[a].insert(i);
}
}
for(int i=0;i<n;i++){
visto=vector<bool>(n,false);
acumulacion=vector<long long int>(n,1);
dfs(i,i,visto,v,acumulacion,i);
//cout<<acumulacion[i]<<' ';
if(mini>acumulacion[i])mini=acumulacion[i];
}
cout<<mini;
}
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