#include <iostream>
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const ll maxn = 2*1e5+5, INF = 4e18+9;
void solve(){
int n;
cin >> n;
vector<int> a(n+1);
vector<vector<int>> boss(n+1);
for(int i = 1; i <= n; i++){
cin >> a[i];
for(int j = 1; j <= a[i]; j++){
int v;
cin >> v;
boss[i].push_back(v);
}
}
vector<vector<int>> adj(n+1);
vector<bool> latest(n+1, false);
vector<bool> vis(n+1, false);
vector<int> aval;
vector<int> t;
ll ans = INF;
for(int root = 1; root <= n; root++){
ll res = 0;
for(int i = 1; i <= n; i++){
latest[i] = false;
vis[i] = false;
}
aval.clear();
aval.push_back(root);
latest[root] = true;
vis[root] = true;
for(int d = 1; d <= n; d++){
if(aval.empty()) break;
t.clear();
res += d*aval.size();
for(int i = 1; i <= n; i++){
if(vis[i]) continue;
for(int j : boss[i]){
if(latest[j]){
t.push_back(i);
break;
}
}
}
for(int i = 1; i <= n; i++) latest[i] = false;
for(int i : t){latest[i] = true; vis[i] = true;}
aval = t;
}
ans = min(ans, res);
}
cout << ans;
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
solve();
}
