QOJ.ac

QOJ

ID	Problem	Submitter	Result	Time	Memory	Language	File size	Submit time	Judge time
#234386	#4196. Monty's Hall	Fyind^#	AC ✓	0ms	3980kb	C++17	363b	2023-11-01 16:51:29	2023-11-01 16:51:30

Judging History

你现在查看的是最新测评结果

[2023-11-01 16:51:30]
评测

测评结果：AC
用时：0ms
内存：3980kb

查看

[2023-11-01 16:51:29]
提交

answer

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

int main() {
    double d,s,e;
    cin>>d>>s>>e;
    double x=1.0/d;

    int numr=d-s-e;
    double y=(1-s*x)/numr;
    double ans=0;
    
    if(s<=numr){
        ans=s*y;
    }
    else {
        ans=numr*y+(s-numr)*x;
    }
    cout<<fixed<<setprecision(8)<<ans<<endl;
}

Source code, Language: C++17

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100

Accepted

time: 0ms

memory: 3980kb

input:

3 1 1

output:

0.66666667

result:

ok found '0.6666667', expected '0.6666670', error '0.0000003'

Test #2:

score: 0

Accepted

time: 0ms

memory: 3856kb

input:

8 4 2

output:

0.75000000

result:

ok found '0.7500000', expected '0.7500000', error '0.0000000'

Test #3:

score: 0

Accepted

time: 0ms

memory: 3860kb

input:

15 4 2

output:

0.32592593

result:

ok found '0.3259259', expected '0.3259259', error '0.0000000'

Test #4:

score: 0

Accepted

time: 0ms

memory: 3848kb

input:

1000000 1 1

output:

0.00000100

result:

ok found '0.0000010', expected '0.0000010', error '0.0000000'

Test #5:

score: 0

Accepted

time: 0ms

memory: 3912kb

input:

1000000 999998 1

output:

0.99999900

result:

ok found '0.9999990', expected '0.9999990', error '0.0000000'

Test #6:

score: 0

Accepted

time: 0ms

memory: 3908kb

input:

1000000 1 999998

output:

0.99999900

result:

ok found '0.9999990', expected '0.9999990', error '0.0000000'

Test #7:

score: 0

Accepted

time: 0ms

memory: 3904kb

input:

78 39 18

output:

0.73076923

result:

ok found '0.7307692', expected '0.7307692', error '0.0000000'

Test #8:

score: 0

Accepted

time: 0ms

memory: 3932kb

input:

95 67 2

output:

0.72631579

result:

ok found '0.7263158', expected '0.7263158', error '0.0000000'

Test #9:

score: 0

Accepted

time: 0ms

memory: 3912kb

input:

132 37 42

output:

0.50242996

result:

ok found '0.5024300', expected '0.5024300', error '0.0000000'

Test #10:

score: 0

Accepted

time: 0ms

memory: 3720kb

input:

358 286 67

output:

0.98603352

result:

ok found '0.9860335', expected '0.9860335', error '0.0000000'

Test #11:

score: 0

Accepted

time: 0ms

memory: 3924kb

input:

507 268 214

output:

0.95069034

result:

ok found '0.9506903', expected '0.9506903', error '0.0000000'

Test #12:

score: 0

Accepted

time: 0ms

memory: 3912kb

input:

307521 21170 77603

output:

0.09443271

result:

ok found '0.0944327', expected '0.0944327', error '0.0000000'

Test #13:

score: 0

Accepted

time: 0ms

memory: 3868kb

input:

801885 303025 80078

output:

0.45014978

result:

ok found '0.4501498', expected '0.4501498', error '0.0000000'

Test #14:

score: 0

Accepted

time: 0ms

memory: 3724kb

input:

841840 457853 312238

output:

0.91477122

result:

ok found '0.9147712', expected '0.9147712', error '0.0000000'

Test #15:

score: 0

Accepted

time: 0ms

memory: 3916kb

input:

141716 97110 2985

output:

0.70630698

result:

ok found '0.7063070', expected '0.7063070', error '0.0000000'

Test #16:

score: 0

Accepted

time: 0ms

memory: 3864kb

input:

107479 105123 477

output:

0.98251752

result:

ok found '0.9825175', expected '0.9825175', error '0.0000000'