Submission #937950

#	Time	Username	Problem	Language	Result	Execution time	Memory
937950		vjudge1	Let's Win the Election (JOI22_ho_t3)	C++17	10 / 100	10 ms	500 KiB

Main

#include <bits/stdc++.h>

using namespace std;

typedef long double ld;

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

	int N, K; cin >> N >> K;
	vector<pair<ld, ld>> v(N);
	for(int i = 0; i < N; i++){
		cin >> v[i].second >> v[i].first;
		if(v[i].first == -1) v[i].first = 1e9;
	}
	sort(v.begin(), v.end());
	ld ans = 7e18;
	for(int collaborators = 0; collaborators < K; collaborators++){
		ld cost = 0;
		ld hv = 1;
		for(int i = 0; i < collaborators; i++){
			cost += v[i].first / hv;
			hv++;
		}
		vector<ld> a;
		for(int i = collaborators; i < N; i++){
			a.push_back(v[i].second);
		}
		sort(a.begin(), a.end());
		for(int i = 0; i < K - collaborators; i++){
			cost += a[i] / hv;
		}
		ans = min(ans, cost);
	}
	cout << fixed << setprecision(8) << ans << "\n";
}

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