Submission #1227622

#	Time	Username	Problem	Language	Result	Execution time	Memory
1227622		Sam_arvandi	Newspapers (CEOI21_newspapers)	C++20	0 / 100	1 ms	328 KiB

newspapers

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

typedef long long ll;
typedef pair<int, int> pii;

random_device device;
default_random_engine rng(device());
//#define rand(l, r) uniform_int_distribution<ll> (l, r) (rng)
#define mp make_pair
#define IOS ios_base :: sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define FOR(i, j, n) for (int i = j; i<= n; i++)
#define ROF(i, n, j) for (int i = n; i>= j; i--)
#define pb push_back
#define sep cout << "--------" << endl;
#define S second
#define F first
#define all(a) a.begin(), a.end()

/*
#pragma GCC optimization("Ofast, unroll-loops")
#pragma GCC target("avx2")
#pragma GCC target("bmi")
#pragma GCC target("bmi2")
#pragma GCC target("lzcnt")
*/

const int mn = 2e5 + 5;


int main()
{
     IOS;
     int n, m, u, v, w;
     cin >> n >> m;
     FOR(i, 1, n-1)
     {
	  cin >> u >> v;
     }
     cout << "YES" << "\n";
     if (n == 1)
     {
	  cout << 1 << ' ' << 1;
	  return 0;
     }
     cout << 2*n - 4 << "\n";
     FOR(i, 2, n-1) cout << i << ' ';
     ROF(i, n-1, 2) cout << i << ' ';


     return 0;
}

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