제출 #827289

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
827289		BERNARB01	Newspapers (CEOI21_newspapers)	C++17	4 / 100	1 ms	348 KiB

newspapers

/**
 *    author:  BERNARD B.01
**/
#include <bits/stdc++.h>

using namespace std;

#ifdef B01
#include "deb.h"
#else
#define deb(...)
#endif

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, m;
  cin >> n >> m;
  vector<vector<int>> g(n);
  for (int i = 0; i < m; i++) {
    int u, v;
    cin >> u >> v;
    --u; --v;
    g[u].push_back(v);
    g[v].push_back(u);
  }
  if (n == 1) {
    cout << "YES" << '\n';
    cout << 1 << '\n';
    cout << 1 << '\n';
  } else if (n == 2) {
    cout << "YES" << '\n';
    cout << 2 << '\n';
    cout << 1 << " " << 1 << '\n';
  } else if (n == 3) {
    cout << "YES" << '\n';
    cout << 2 << '\n';
    cout << 2 << " " << 2 << '\n';
  } else {
    cout << "YES" << '\n';
    cout << 2 * n << '\n';
    for (int i = 0; i < n; i++) {
      cout << i + 1 << " " << i + 1 << " \n"[i == n - 1];
    }
  }
  return 0;
}

• Subtask 1: 0 / 12
• Subtask 2: 4 / 8
• Subtask 3: 0 / 80