#include <bits/stdc++.h>
using namespace std;
vector<vector<int>>V;
vector<int>in_degree;
vector<int>dp;
vector<bool>vis;
int solve (int a) {
if (vis[a]) return 0;
if (V[a].empty()) return dp[a] = 1;
if (dp[a] != -1) return dp[a];
vis[a] = 1;
int sum = 0;
for (auto &b : V[a]) {
sum += solve(b);
}
return dp[a] = sum+1;
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
int n;
cin >> n;
dp.resize(n+1,-1);
V.resize(n+1);
for (int i=1; i<=n; i++) {
int m;
cin >> m;
while (m--) {
int b;
cin >> b;
V[b].push_back(i);
}
}
int ans = 1e9;
vis.resize(n+1,0);
cout << 2*solve(1);
}
