QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #619211 | #2440. Valentine's Day | untitledtwo# | AC ✓ | 70ms | 3972kb | C++17 | 474b | 2024-10-07 13:30:53 | 2024-10-07 13:30:54 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
double a[10010];
int main()
{
int T;
scanf("%d", &T);
while(T--)
{
int n;
scanf("%d", &n);
for(int i = 1; i <= n; i++)
scanf("%lf", &a[i]);
sort(a + 1, a + n + 1, greater<double>());
double ans = a[1], prod = 1 - a[1];
for(int i = 2; i <= n; i++)
{
if(prod - ans < 0)
break;
ans += a[i] * (prod - ans);
prod *= (1 - a[i]);
}
printf("%.12lf\n", ans);
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 70ms
memory: 3972kb
input:
100 10 0.020874 0.180969 0.015588 0.043033 0.181293 0.033025 0.163341 0.104341 0.065442 0.129546 10 0.019357 0.210598 0.045487 0.051145 0.014579 0.135566 0.004401 0.008004 0.106695 0.056974 10 0.062679 0.216144 0.010137 0.031823 0.233062 0.042464 0.099544 0.140483 0.201337 0.045349 100 0.116404 0.19...
output:
0.398190071489 0.373683886459 0.410885362758 0.421374044378 0.419872971016 0.421062257019 0.420796858020 0.419890897576 0.419860393202 0.000099990100 0.000000000000 0.003341000000 0.003336000000 0.001427003306 0.003169000000 0.029231252961 0.061862431346 0.022757483568 0.015698496871 0.035934479901 ...
result:
ok 100 numbers