제출 #1089093

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1089093		lucaskojima	Prosjek (COCI18_prosjek)	C++17	40 / 50	1099 ms	348 KiB

prosjek

#include "bits/stdc++.h"
#define ff first
#define ss second
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define sz(x) (int)(x).size()

using namespace std;
using ll = long long;
using pii = pair<int, int>;

const char nl = '\n';
const ll LINF = 0x3f3f3f3f3f3f3f3f;
const int INF = 0x3f3f3f3f;

int main() {
	ios::sync_with_stdio(0), cin.tie(0);

	int n; cin >> n;
	vector<int> v(n); for (auto &x : v) cin >> x;

	sort(all(v));

	double ans = 0;

	do {
		double m;
		for (int i = 0; i < n - 1; i++) {
			if (i == 0) m = (double) (v[i] + v[i + 1]) / 2;
			else m = (double) (m + v[i + 1]) / 2;
		}
		ans = max(ans, m);
	} while (next_permutation(all(v)));

	cout << fixed << setprecision(6) << ans << nl;
	return 0;
}

• Subtask 1: 40 / 50