#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";
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
348 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
1 ms |
348 KB |
Output is correct |
| 5 |
Correct |
1 ms |
344 KB |
Output is correct |
| 6 |
Correct |
2 ms |
344 KB |
Output is correct |
| 7 |
Correct |
5 ms |
348 KB |
Output is correct |
| 8 |
Correct |
4 ms |
344 KB |
Output is correct |
| 9 |
Correct |
5 ms |
496 KB |
Output is correct |
| 10 |
Correct |
4 ms |
348 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
348 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
1 ms |
348 KB |
Output is correct |
| 5 |
Correct |
1 ms |
344 KB |
Output is correct |
| 6 |
Correct |
2 ms |
344 KB |
Output is correct |
| 7 |
Correct |
5 ms |
348 KB |
Output is correct |
| 8 |
Correct |
4 ms |
344 KB |
Output is correct |
| 9 |
Correct |
5 ms |
496 KB |
Output is correct |
| 10 |
Correct |
4 ms |
348 KB |
Output is correct |
| 11 |
Correct |
1 ms |
344 KB |
Output is correct |
| 12 |
Correct |
2 ms |
344 KB |
Output is correct |
| 13 |
Correct |
4 ms |
348 KB |
Output is correct |
| 14 |
Correct |
3 ms |
500 KB |
Output is correct |
| 15 |
Correct |
4 ms |
348 KB |
Output is correct |
| 16 |
Correct |
6 ms |
496 KB |
Output is correct |
| 17 |
Correct |
8 ms |
348 KB |
Output is correct |
| 18 |
Correct |
5 ms |
344 KB |
Output is correct |
| 19 |
Correct |
8 ms |
348 KB |
Output is correct |
| 20 |
Correct |
7 ms |
348 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
1 ms |
344 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
1 ms |
344 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 10 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
1 ms |
344 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
1 ms |
344 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 10 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
1 ms |
344 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
1 ms |
344 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 10 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
10 ms |
348 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
348 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
1 ms |
348 KB |
Output is correct |
| 5 |
Correct |
1 ms |
344 KB |
Output is correct |
| 6 |
Correct |
2 ms |
344 KB |
Output is correct |
| 7 |
Correct |
5 ms |
348 KB |
Output is correct |
| 8 |
Correct |
4 ms |
344 KB |
Output is correct |
| 9 |
Correct |
5 ms |
496 KB |
Output is correct |
| 10 |
Correct |
4 ms |
348 KB |
Output is correct |
| 11 |
Correct |
1 ms |
344 KB |
Output is correct |
| 12 |
Correct |
2 ms |
344 KB |
Output is correct |
| 13 |
Correct |
4 ms |
348 KB |
Output is correct |
| 14 |
Correct |
3 ms |
500 KB |
Output is correct |
| 15 |
Correct |
4 ms |
348 KB |
Output is correct |
| 16 |
Correct |
6 ms |
496 KB |
Output is correct |
| 17 |
Correct |
8 ms |
348 KB |
Output is correct |
| 18 |
Correct |
5 ms |
344 KB |
Output is correct |
| 19 |
Correct |
8 ms |
348 KB |
Output is correct |
| 20 |
Correct |
7 ms |
348 KB |
Output is correct |
| 21 |
Correct |
0 ms |
344 KB |
Output is correct |
| 22 |
Correct |
1 ms |
348 KB |
Output is correct |
| 23 |
Correct |
1 ms |
344 KB |
Output is correct |
| 24 |
Correct |
0 ms |
348 KB |
Output is correct |
| 25 |
Correct |
1 ms |
344 KB |
Output is correct |
| 26 |
Correct |
0 ms |
348 KB |
Output is correct |
| 27 |
Correct |
1 ms |
344 KB |
Output is correct |
| 28 |
Correct |
0 ms |
348 KB |
Output is correct |
| 29 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 30 |
Halted |
0 ms |
0 KB |
- |
