QOJ.ac

QOJ

ID	Problem	Submitter	Result	Time	Memory	Language	File size	Submit time	Judge time
#144337	#4196. Monty's Hall	PHarr	AC ✓	1ms	3836kb	C++20	425b	2023-08-21 16:19:23	2023-08-21 16:19:44

Judging History

你现在查看的是最新测评结果

[2023-08-21 16:19:44]
评测

测评结果：AC
用时：1ms
内存：3836kb

查看

[2023-08-21 16:19:23]
提交

answer

#include <bits/stdc++.h>

using namespace std;

#define int long long

#define double long double

int32_t main() {
    ios::sync_with_stdio(false), cin.tie(nullptr);
    double d , s , e;
    cin >> d >> s >> e;
    double p = 1.0l / d ;
    double x = max( 0.0l , s - ( d - s - e ) );
    cout << fixed << setprecision(10) << (x / s) * ( s * p)  + ( s - x )/(d - s - e ) * (( d - s) * p) ;
    return 0;
}

Source code, Language: C++20

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100

Accepted

time: 1ms

memory: 3792kb

input:

3 1 1

output:

0.6666666667

result:

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

Test #2:

score: 0

Accepted

time: 1ms

memory: 3732kb

input:

8 4 2

output:

0.7500000000

result:

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

Test #3:

score: 0

Accepted

time: 1ms

memory: 3836kb

input:

15 4 2

output:

0.3259259259

result:

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

Test #4:

score: 0

Accepted

time: 1ms

memory: 3680kb

input:

1000000 1 1

output:

0.0000010000

result:

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

Test #5:

score: 0

Accepted

time: 1ms

memory: 3664kb

input:

1000000 999998 1

output:

0.9999990000

result:

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

Test #6:

score: 0

Accepted

time: 1ms

memory: 3792kb

input:

1000000 1 999998

output:

0.9999990000

result:

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

Test #7:

score: 0

Accepted

time: 1ms

memory: 3736kb

input:

78 39 18

output:

0.7307692308

result:

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

Test #8:

score: 0

Accepted

time: 0ms

memory: 3736kb

input:

95 67 2

output:

0.7263157895

result:

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

Test #9:

score: 0

Accepted

time: 1ms

memory: 3728kb

input:

132 37 42

output:

0.5024299600

result:

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

Test #10:

score: 0

Accepted

time: 0ms

memory: 3764kb

input:

358 286 67

output:

0.9860335196

result:

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

Test #11:

score: 0

Accepted

time: 1ms

memory: 3732kb

input:

507 268 214

output:

0.9506903353

result:

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

Test #12:

score: 0

Accepted

time: 1ms

memory: 3764kb

input:

307521 21170 77603

output:

0.0944327116

result:

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

Test #13:

score: 0

Accepted

time: 1ms

memory: 3736kb

input:

801885 303025 80078

output:

0.4501497839

result:

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

Test #14:

score: 0

Accepted

time: 1ms

memory: 3736kb

input:

841840 457853 312238

output:

0.9147712154

result:

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

Test #15:

score: 0

Accepted

time: 1ms

memory: 3764kb

input:

141716 97110 2985

output:

0.7063069802

result:

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

Test #16:

score: 0

Accepted

time: 0ms

memory: 3684kb

input:

107479 105123 477

output:

0.9825175150

result:

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