#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int maxN = 5005;
const int INF = 1e9 + 5;
vector<int> adj[maxN];
int n;
int biggest_dep_1 = 0;
int solve(int root) {
vector<int> dep[n+1]; // vertices that are at some depth
vector<int> new_adj[n+1];
vector<bool> conn(n+1, false); // is vertex already used
conn[root] = true;
dep[1].push_back(root);
for(int d = 1; d < n; d++) {
for(int v : dep[d]) {
for(int u : adj[v]) {
if (!conn[u]) {
new_adj[u].push_back(v);
dep[d+1].push_back(u);
conn[u] = true;
}
}
}
if (d == 1) {
if ((int) dep[2].size() + 5 < biggest_dep_1) return INF;
biggest_dep_1 = (int) dep[2].size();
}
}
if (count(conn.begin(), conn.end(), true) != n) return INF;
vector<int> sal(n+1, 0);
int sum = 0;
for(int d = n; d >= 1; d--) {
for(int ord : dep[d]) {
sal[ord]++;
sum += sal[ord];
for(int boss : new_adj[ord]) {
sal[boss] += sal[ord];
}
}
}
return sum;
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n;
for(int ord = 1; ord <= n; ord++) {
int k;
cin >> k;
for(int j = 0; j < k; j++) {
int boss;
cin >> boss;
adj[boss].push_back(ord);
}
}
int best = INF;
// root the tree at every possible vertex
for(int boss = 1; boss <= n; boss++) {
best = min(best, solve(boss));
}
cout << best;
return 0;
}
