#include <iostream>
#include <vector>
using namespace std;

vector <vector <int> > data;

pair <int, int> f(int k) {
    if (data[k].size() == 0) {
        pair <int, int> x = make_pair(1, 0);
        return x;
    } else {
        int a = 1, b = 0;
        for (int i = 0; i < data[k].size(); ++i) {
            if (data[k][i] > k) {
                a += f(data[k][i]).second;
                b += f(data[k][i]).first;
            }
        }
        return(make_pair(a, b));
    }
}

int main() {
    int n;
    cin >> n;
    vector <vector <int> > data2(n);
    for (int i = 0; i < n; ++i) {
        int x;
        cin >> x;
        vector <int> data1(x);
        for (int j = 0; j < x; ++j) {
            cin >> data1[j];
        }
        data2[i] = data1;
    }
    data = data2;
    pair <int, int> result = f(0);
    if (result.first < result.second) {
        cout << result.first;
    } else {
        cout << result.second;
    }
    return 0;
}