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QOJ
| ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
|---|---|---|---|---|---|---|---|---|---|
| #619136 | #2440. Valentine's Day | Cheek_support# | AC ✓ | 92ms | 4052kb | C++20 | 529b | 2024-10-07 13:14:35 | 2024-10-07 13:14:36 |
Judging History
answer
#include <bits/stdc++.h>
#define ll long long
#define ld long double
using namespace std;
const int N=100100;
ld a[N];
int main(){
int _t;
scanf("%d",&_t);
for(;_t;_t--){
int n;
scanf("%d",&n);
for(int i=1;i<=n;i++)
scanf("%Lf",&a[i]);
sort(a+1,a+n+1);
ld A=1,B=0;
for(int i=n;i>=1;i--){
if(B>A)break;
B=A*a[i]+B*(1.0-a[i]);
A=A*(1-a[i]);
}
printf("%Lf\n",B);
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 92ms
memory: 4052kb
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:
0.398190 0.373684 0.410885 0.421374 0.419873 0.421062 0.420797 0.419891 0.419860 0.000100 0.000000 0.003341 0.003336 0.001427 0.003169 0.029231 0.061862 0.022757 0.015698 0.035934 1.000000 0.376079 0.376081 0.376081 0.376082 0.376080 0.376077 0.376083 0.376078 0.376084 0.376073 0.376079 0.375987 0.3...
result:
ok 100 numbers