제출 #1316527

#제출 시각아이디문제언어결과실행 시간메모리
1316527TroySerMake them Meet (EGOI24_makethemmeet)C++20
0 / 100
0 ms332 KiB
#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int main() {

    ll N, M;
    cin >> N >> M;

    vector<vector<ll> > adjList(N);

    for (ll i = 0; i < M; i++) {
        ll u, v;
        cin >> u >> v;
        adjList[u].push_back(v);
        adjList[v].push_back(u);
    }

    cout << N << endl;
    
    for (ll i = 0; i < N; i++) {
        
        cout << i << " " << (i + 1) % N << endl;

    }

}
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