Submission #1263791

#	Time	Username	Problem	Language	Result	Execution time	Memory
1263791		goulthen	Let's Win the Election (JOI22_ho_t3)	C++20	0 / 100	1 ms	328 KiB

Main

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

#define int long long
#define rep(i,a,b) for (int i = a; i <= b; ++i)
#define pii pair<int,int>
#define fi first
#define se second

const int MAXN = 510;
pii a[MAXN];

int32_t main() {
	ios_base::sync_with_stdio(0); cin.tie(nullptr);

	int n,k; cin >> n >> k;
	rep(i,1,n) {
		cin >> a[i].se >> a[i].fi;
		if (a[i].fi==-1) a[i].fi = 1e9;
	}
	sort(a+1, a+n+1);

	double ans = 1e9;
	rep(j,0,n) {
		if (j > 0 && a[j].fi == 1e9) break;
		double cur = 0;
		int cnt = 1;
		rep(i,1,n) {
			if (i <= j) {
				cur += (double)a[i].fi/cnt;
				cnt++;
			} else {
				cur += (double)a[i].se/cnt;
			}
		}
		ans = min(ans,cur);
	}
	cout << fixed << setprecision(10) << ans << '\n';
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 5
• Subtask 3: 0 / 11
• Subtask 4: 0 / 12
• Subtask 5: 0 / 33
• Subtask 6: 0 / 11
• Subtask 7: 0 / 23