Submission #827186

#	Time	Username	Problem	Language	Result	Execution time	Memory
827186		BERNARB01	Newspapers (CEOI21_newspapers)	C++17	0 / 100	1 ms	324 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;
  if (m <= 2) {
    cout << "YES" << '\n';
    if (m == 0) {
      cout << 1 << '\n';
      cout << 1 << '\n';
    } else if (m == 1) {
      cout << 2 << '\n';
      cout << 1 << " " << 1 << '\n';
    } else {
      cout << 2 << '\n';
      vector<int> deg(n);
      int u, v;
      cin >> u >> v;
      --u; --v;
      deg[u]++;
      deg[v]++;
      int uu, vv;
      cin >> uu >> vv;
      deg[uu]++;
      deg[vv]++;
      --uu; --vv;
      int z = (deg[0] == 2 ? 1 : (deg[1] == 2 ? 2 : 3));
      cout << z << " " << z << '\n';
    }
  } else {
    cout << "NO" << '\n';
  }
  return 0;
}

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