#include <bits/stdc++.h>
using namespace std;
#define intt long long
constexpr int sz = 5005;
constexpr intt inf = 1e18 + 7;
int n, cnt;
intt cost, ans = inf;
vector<int> g[sz], gm[sz];
bitset<sz> vis;
void bfs(int root){
queue<int> q;
q.push(root);
vis[root] = 1;
while(!q.empty()){
int cur = q.front();
q.pop();
++cnt;
for(int &u : g[cur]){
if(vis[u]) continue;
vis[u] = 1;
q.push(u);
gm[cur].emplace_back(u);
}
}
}
intt dfs(int u){
intt res = 1;
for(auto to : gm[u]) res += dfs(to);
cost += res;
return res;
}
signed main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n;
for(int i = 1, k; i <= n; ++i){
cin >> k;
for(int j = 1, u; j <= k; ++j){
cin >> u;
g[u].emplace_back(i);
}
}
for(int i = 1; i <= n; ++i){
vis.reset();
cost = 0ll;
cnt = 0;
bfs(i);
if(cnt ^ n) continue;
dfs(i);
for(int j = 1; j <= n; ++j) gm[j].clear();
ans = min(ans, cost);
}
cout << ans << '\n';
return 0;
}
