Submission #659730

#	Time	Username	Problem	Language	Result	Execution time	Memory
659730		Sohsoh84	Newspapers (CEOI21_newspapers)	C++17	8 / 100	1 ms	212 KiB

newspapers

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<ll, ll> pll;

#define all(x)			(x).begin(),(x).end()
#define X			first
#define Y			second
#define sep			' '
#define endl			'\n'
#define debug(x)		cerr << #x << ": " <<  x << endl;

const ll MAXN = 1e6 + 10;

int main() {
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	int n;
	cin >> n;

	cout << "YES" << endl;
	if (n == 1) return cout << 1 << endl << 1 << endl, 0;
	if (n == 2) return cout << 2 << endl << 1 << sep << 1 << endl, 0;

	cout << 2 * (n - 2) << endl;
	if (n & 1) {
		for (int i = n - 1; i > 1; i--) cout << i << sep;
		for (int i = n - 1; i > 1; i--) cout << i << sep;
		cout << endl;
	} else {
		for (int i = 2; i < n; i++) cout << i << sep;
		for (int i = n - 1; i > 1; i--) cout << i << sep;
		cout << endl;
	}
	return 0;
}

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