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#include <iostream>

using namespace std;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int k, firstN;
    cin >> k >> firstN;

    int count = firstN;

    for(int i=0; i<k-1; i++){
        int n, busy = 0;
        cin >> n;
        int alrSeen[n] = {0};
        for(int j=0; j<n; j++){
            int a = 0;
            cin >> a;
            if(a == 0) count++;
            else {
                for(int seenCheck=0; seenCheck<n; seenCheck++){
                    if(alrSeen[seenCheck] == a) break;
                    else if(seenCheck == 0){
                        alrSeen[seenCheck] = a;
                        if(busy == count) count++;
                        else busy++;
                    }
                }
            }
        }
    }

    cout << count;

    return 0;
}