This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
// Bismi Allah
#include "bits/stdc++.h"
using namespace std;
signed main () {
int n, k;
cin >> n >> k;
vector <int> g[n];
int f = 0;
for(int i = 0; i < n; i ++) {
int sz;
cin >> sz;
if(sz) f = 1;
for(int v;sz>=1;sz--) {
cin >> v;
g[i].push_back(v-1);
}
}
if(f) cout << 2;
else cout << 1;
return 0;
}
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