Submission #73477040

---

Source Code Expand

#include <bits/stdc++.h>
using namespace std;

void O_O() {
    int n, m, freq[101] = {};
    cin >> n >> m;

    while (n--) {
        int l, x;
        cin >> l;
        
        bool f = false;
        while (l--) {
            cin >> x;
            if (!f && !freq[x]) {
                freq[x]++;
                cout << x << '\n';
                f = true;
            }
        }
        if (!f) cout << "0\n";
    }
}

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

    int TC = 1;
    //cin >> TC;
    while (TC--) {
        O_O();
        if (TC) cout << '\n';
    }

    return 0;
}

Submission Info

Judge Result