//In The Name Of GOD
#include "bits/stdc++.h"
#define sz(x) ((int) (x).size())
using namespace std;
using LL = long long;
const int N = 5e3 + 5;
vector<int> out[N];
signed main() {
ios::sync_with_stdio(false);
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;
out[u].push_back(i);
}
}
long long ans = 3e18;
for (int u = 0; u < n; u++) {
vector<int> d(n, -1);
queue<int> q;
q.push(u);
d[u] = 0;
while (!q.empty()) {
int v = q.front(); q.pop();
for (int w : out[v]) {
if (d[w] == -1) {
d[w] = d[v] + 1;
q.push(w);
}
}
}
long long res = n;
for (int i = 0; i < n; i++)
res += d[i];
ans = min(ans, res);
}
cout << ans << '\n';
return 0;
}
