제출 #897421

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
897421		NeroZein	Newspapers (CEOI21_newspapers)	C++17	8 / 100	1 ms	500 KiB

newspapers

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

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

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

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