/* Rastegary Az Shoroe Ye EDAST */
#include <bits/stdc++.h>
#define pb push_back
#define endl "\n"
#define ll long long
#define int long long
using namespace std;
const int maxn = 5e3 + 10, Maxn = 1e5 + 10, SQ = 360 , lg = 22 ;
const int mod = 1e9 + 7;
const ll inf = 1e18 + 10;
vector<int>adj1[maxn] , adj2[maxn] , adj[maxn];
int val[maxn];
bool vis[maxn];
int dfs(int v){
for(auto u : adj1[v]){
if(vis[u] == 0){
vis[u] = 1;
adj[v].pb(u);
}
}
int res = 0;
for(auto u : adj[v])
res += dfs(u);
val[v] = res + 1;
return res + 1;
}
int32_t main(){
ios:: sync_with_stdio(0), cin.tie(0), cout.tie(0);
int n;
cin >> n;
for(int i = 0 ; i < n ; i ++){
int k;
cin >> k;
for(int j = 0 ; j < k ; j++){
int u;
cin >> u;
u--;
adj1[u].pb(i);
adj2[i].pb(u);
}
}
int ans = inf;
for(int i = 0 ; i < n ; i++){
for(int j = 0 ; j < n ; j++){
adj[j].clear();
vis[j] = 0;
val[j] = 0;
}
vis[i] = 1;
dfs(i);
int x = 0;
for(int j = 0;j < n; j ++){
x += val[j];
if(val[j] == 0){
x = inf;
break;
}
}
ans = min(ans , x);
}
cout << ans << endl;
return 0;
}
