#include <bits/stdc++.h>
using namespace std;
void main_program();
signed main(){
ios_base::sync_with_stdio(0); cin.tie(0);
main_program();
}
int n;
vector<int> vst;
vector<vector<int>> adj, structure;
int total;
int dfs(int x, int p = -1){
int sum = 0;
for (auto k: structure[x]){
if (k == p) continue;
sum += dfs(k, x);
}
total += sum + 1;
return sum + 1;
}
void main_program(){
cin >> n;
adj.resize(n);
for (int i = 0; i < n; i++){
int sz; cin >> sz;
for (int j = 0; j < sz; j++){
int x; cin >> x; x--;
adj[x].push_back(i);
}
}
int res = 1e9;
for (int root = 0; root < n; root++){
vst.assign(n, 0);
structure.clear(); structure.resize(n);
queue<int> q; q.push(root); vst[root] = 1;
while (!q.empty()){
int x = q.front(); q.pop();
for (auto k: adj[x]){
if (!vst[k]){
vst[k] = 1;
structure[x].push_back(k);
q.push(k);
}
}
}
total = 0; dfs(root);
res = min(res, total);
}
cout << res << "\n";
}
