#include <bits/stdc++.h>
#define nl '\n'
signed main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
int n;
std::cin >> n;
std::vector<std::vector<int>> employee(n);
for (int i = 0; i < n; i++) {
int k;
std::cin >> k;
for (int j = 0; j < k; j++) {
int x; std::cin >> x;
--x;
employee[x].push_back(i);
}
}
int res = 1e9;
for (int r = 0; r < n; r++) {
std::vector<int> dep(n, -1);
// now what can we do
std::queue<int> q;
q.push(r);
dep[r] = 1;
int ans = 1;
int cnt = 0;
while (q.size()) {
int u = q.front();
q.pop();
cnt++;
for (int v : employee[u]) {
if (dep[v] == -1) {
dep[v] = dep[u] + 1;
q.push(v);
ans += dep[v];
}
}
}
if (cnt == n) {
res = std::min(ans, res);
}
}
std::cout << res << nl;
}
