#include <bits/stdc++.h>
using namespace std;
#define f first
#define s second
#define int long long
const int N = 550;
int n, x;
pair<int, int> a[N];
double dp1[N][N], dp2[N][N];
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int tt = 1;
//cin >> tt;
while (tt--) {
cin >> n >> x;
for (int i = 1;i <= n;i++) {
cin >> a[i].f >> a[i].s;
if (a[i].s == -1)
a[i].s = 1e9;
}
sort(a + 1, a + n + 1, [&](pair<int, int> x, pair<int, int> y) {
return x.s < y.s;
});
//prvih i, dobio sam j glasova, k ljudi ucestvuje
double ans = 1e9;
for (int s = 1;s <= n;s++) {
for (int j = 0;j <= n;j++) {
for (int k = 0;k <= n;k++)
dp1[j][k] = 1e9;
}
for (int i = 1;i <= n;i++) {
dp1[0][1] = 0;
for (int j = 1;j <= n;j++) {
for (int k = 1;k <= n;k++) {
dp2[j][k] = dp1[j][k];
dp2[j][k] = min(dp2[j][k], dp1[j - 1][k] + (double)a[i].f / s);
if (k > 1)
dp2[j][k] = min(dp2[j][k], dp1[j - 1][k - 1] + (double)a[i].s / (k - 1));
}
}
for (int j = 0;j <= n;j++) {
for (int k = 0;k <= n;k++) {
dp1[j][k] = dp2[j][k];
dp2[j][k] = 1e9;
}
}
}
ans = min(ans, dp1[x][s]);
}
cout << fixed << setprecision(15) << ans;
}
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 5 |
Execution timed out |
2581 ms |
4956 KB |
Time limit exceeded |
| 6 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 5 |
Execution timed out |
2581 ms |
4956 KB |
Time limit exceeded |
| 6 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
0 ms |
2396 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 19 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 20 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 22 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2648 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2648 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 27 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 28 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 29 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 30 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 31 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 32 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 33 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 34 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 35 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 36 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 37 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 38 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 39 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 40 |
Correct |
1 ms |
2396 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 19 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 20 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 22 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2648 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2648 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 27 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 28 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 29 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 30 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 31 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 32 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 33 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 34 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 35 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 36 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 37 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 38 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 39 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 40 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 41 |
Correct |
221 ms |
4724 KB |
Output is correct |
| 42 |
Correct |
221 ms |
4696 KB |
Output is correct |
| 43 |
Correct |
213 ms |
4728 KB |
Output is correct |
| 44 |
Correct |
215 ms |
4732 KB |
Output is correct |
| 45 |
Correct |
216 ms |
4732 KB |
Output is correct |
| 46 |
Correct |
216 ms |
4732 KB |
Output is correct |
| 47 |
Correct |
219 ms |
4700 KB |
Output is correct |
| 48 |
Correct |
230 ms |
4740 KB |
Output is correct |
| 49 |
Correct |
224 ms |
4728 KB |
Output is correct |
| 50 |
Correct |
222 ms |
4700 KB |
Output is correct |
| 51 |
Correct |
213 ms |
4728 KB |
Output is correct |
| 52 |
Correct |
215 ms |
4724 KB |
Output is correct |
| 53 |
Correct |
215 ms |
4700 KB |
Output is correct |
| 54 |
Correct |
217 ms |
4728 KB |
Output is correct |
| 55 |
Correct |
222 ms |
4700 KB |
Output is correct |
| 56 |
Correct |
219 ms |
4724 KB |
Output is correct |
| 57 |
Correct |
218 ms |
4696 KB |
Output is correct |
| 58 |
Correct |
218 ms |
4724 KB |
Output is correct |
| 59 |
Correct |
214 ms |
4732 KB |
Output is correct |
| 60 |
Correct |
213 ms |
4700 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Execution timed out |
2561 ms |
4956 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 5 |
Execution timed out |
2581 ms |
4956 KB |
Time limit exceeded |
| 6 |
Halted |
0 ms |
0 KB |
- |
