Submission #944885

#	Time	Username	Problem	Language	Result	Execution time	Memory
944885		Halym2007	Newspapers (CEOI21_newspapers)	C++11	8 / 100	1 ms	600 KiB

newspapers

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
const int N = 1e3 + 5;
//vector <int> v[N];
//bool vis[N];
//void dfs (int x, int pr) {
//	vis[x] = 1;
//	for (int i : v[x]) {
//		if (i == pr) continue;
//		if (vis[i]) {
//			cout << "NO";
//			exit(0);
//		}
//		dfs (i, x);
//	}
//	vis[x] = 2;
//}

int main () {
//	freopen ("input.txt", "r", stdin);
	int n, m;
	cin >> n >> m;
	for (int i = 1; i <= m; ++i) {
		int l, r;
		cin >> l >> r;
//		v[l].pb (r);
//		v[r].pb (l);
	}
//	dfs (1, -1);
//	if (m == n - 1) cout << "YES\n";
//	else {
//		if (n < 20) cout << "NO\n";
//		else cout << "YES\n";
//	}
//	
	cout << "YES\n";
	if (n <= 2) {
		cout << n << "\n";
		for (int i = 1; i <= n; ++i) {
			cout << n << " ";
		}
		return 0;
	}
	cout << 2*n - 4 << "\n";
	for (int i = 2; i < n; ++i) {
		cout << i << " ";
	}
	for (int i = n - 1; i > 1; i--) {
		cout << i << " ";
	}
//	cout << n * 4 - 4 << "\n";
}

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