QOJ.ac

QOJ

ID	Problem	Submitter	Result	Time	Memory	Language	File size	Submit time	Judge time
#66482	#5151. Bottle Flip	karuna^#	AC ✓	3ms	3740kb	C++17	435b	2022-12-08 19:00:32	2022-12-08 19:00:33

Judging History

你现在查看的是最新测评结果

[2023-08-10 23:21:45]
System Update: QOJ starts to keep a history of the judgings of all the submissions.

[2022-12-08 19:00:33]
评测

测评结果：AC
用时：3ms
内存：3740kb

查看

[2022-12-08 19:00:32]
提交

answer

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

int main() {
    cin.tie(0); ios_base::sync_with_stdio(0);
    int h, r, a, b; cin >> h >> r >> b >> a;
    double L = 0, R = h;
    while (R - L > 1e-8) {
        double M = (L + R) / 2;
        double x = (M * M * a + (h + M) * (h - M) * b) / (M * a + (h - M) * b) / 2;
        if (x < M) R = M;
        else L = M;
    }
    cout.precision(10);
    cout << fixed << L;
}

Source code, Language: C++17

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100

Accepted

time: 2ms

memory: 3700kb

input:

22 4 1 4

output:

7.3333333316

result:

ok found '7.3333333', expected '7.3333333', error '0.0000000'

Test #2:

score: 0

Accepted

time: 2ms

memory: 3616kb

input:

7 2 655 988

output:

3.1415941678

result:

ok found '3.1415942', expected '3.1415942', error '0.0000000'

Test #3:

score: 0

Accepted

time: 2ms

memory: 3612kb

input:

1 1 1 2

output:

0.4142135605

result:

ok found '0.4142136', expected '0.4142136', error '0.0000000'

Test #4:

score: 0

Accepted

time: 2ms

memory: 3740kb

input:

1000 1000 999 1000

output:

499.8749374572

result:

ok found '499.8749375', expected '499.8749375', error '0.0000000'

Test #5:

score: 0

Accepted

time: 2ms

memory: 3660kb

input:

1000 1000 1 1000

output:

30.6534300253

result:

ok found '30.6534300', expected '30.6534300', error '0.0000000'

Test #6:

score: 0

Accepted

time: 2ms

memory: 3580kb

input:

1 1000 1 1000

output:

0.0306534246

result:

ok found '0.0306534', expected '0.0306534', error '0.0000000'

Test #7:

score: 0

Accepted

time: 2ms

memory: 3516kb

input:

1000 1000 482 483

output:

499.7409325661

result:

ok found '499.7409326', expected '499.7409326', error '0.0000000'

Test #8:

score: 0

Accepted

time: 1ms

memory: 3520kb

input:

1 1000 482 483

output:

0.4997409284

result:

ok found '0.4997409', expected '0.4997409', error '0.0000000'

Test #9:

score: 0

Accepted

time: 3ms

memory: 3560kb

input:

1 1000 1 2

output:

0.4142135605

result:

ok found '0.4142136', expected '0.4142136', error '0.0000000'

Test #10:

score: 0

Accepted

time: 3ms

memory: 3592kb

input:

1000 1000 1 2

output:

414.2135623697

result:

ok found '414.2135624', expected '414.2135624', error '0.0000000'

Test #11:

score: 0

Accepted

time: 2ms

memory: 3608kb

input:

961 1000 979 983

output:

480.0101931695

result:

ok found '480.0101932', expected '480.0101932', error '0.0000000'

Test #12:

score: 0

Accepted

time: 2ms

memory: 3540kb

input:

997 1000 977 983

output:

497.7369880082

result:

ok found '497.7369880', expected '497.7369880', error '0.0000000'

Test #13:

score: 0

Accepted

time: 2ms

memory: 3560kb

input:

1 928 1 66

output:

0.1096005887

result:

ok found '0.1096006', expected '0.1096006', error '0.0000000'

Test #14:

score: 0

Accepted

time: 2ms

memory: 3664kb

input:

1 928 2 88

output:

0.1310058013

result:

ok found '0.1310058', expected '0.1310058', error '0.0000000'

Test #15:

score: 0

Accepted

time: 2ms

memory: 3536kb

input:

1 928 3 74

output:

0.1676009074

result:

ok found '0.1676009', expected '0.1676009', error '0.0000000'

Test #16:

score: 0

Accepted

time: 2ms

memory: 3740kb

input:

1 928 3 41

output:

0.2129088491

result:

ok found '0.2129088', expected '0.2129089', error '0.0000000'

Test #17:

score: 0

Accepted

time: 3ms

memory: 3692kb

input:

1 928 1 12

output:

0.2240092307

result:

ok found '0.2240092', expected '0.2240092', error '0.0000000'

Test #18:

score: 0

Accepted

time: 2ms

memory: 3608kb

input:

2 928 89 93

output:

0.9890096560

result:

ok found '0.9890097', expected '0.9890097', error '0.0000000'

Test #19:

score: 0

Accepted

time: 2ms

memory: 3608kb

input:

7 928 51 72

output:

3.1990098730

result:

ok found '3.1990099', expected '3.1990099', error '0.0000000'

Test #20:

score: 0

Accepted

time: 2ms

memory: 3612kb

input:

722 547 709 752

output:

355.6863918143

result:

ok found '355.6863918', expected '355.6863918', error '0.0000000'

Test #21:

score: 0

Accepted

time: 1ms

memory: 3520kb

input:

242 742 518 920

output:

103.7429034555

result:

ok found '103.7429035', expected '103.7429035', error '0.0000000'

Test #22:

score: 0

Accepted

time: 2ms

memory: 3688kb

input:

873 701 43 201

output:

276.0875558416

result:

ok found '276.0875558', expected '276.0875558', error '0.0000000'

Test #23:

score: 0

Accepted

time: 2ms

memory: 3664kb

input:

268 228 527 562

output:

131.8460919345

result:

ok found '131.8460919', expected '131.8460919', error '0.0000000'

Test #24:

score: 0

Accepted

time: 2ms

memory: 3560kb

input:

312 558 341 839

output:

121.4683850741

result:

ok found '121.4683851', expected '121.4683851', error '0.0000000'

Test #25:

score: 0

Accepted

time: 0ms

memory: 3540kb

input:

274 85 178 364

output:

112.7564906842

result:

ok found '112.7564907', expected '112.7564907', error '0.0000000'

Test #26:

score: 0

Accepted

time: 1ms

memory: 3692kb

input:

641 539 341 977

output:

238.0544387381

result:

ok found '238.0544387', expected '238.0544387', error '0.0000000'

Test #27:

score: 0

Accepted

time: 2ms

memory: 3616kb

input:

245 861 438 872

output:

101.6183839213

result:

ok found '101.6183839', expected '101.6183839', error '0.0000000'

Test #28:

score: 0

Accepted

time: 1ms

memory: 3692kb

input:

640 181 156 606

output:

215.4198348895

result:

ok found '215.4198349', expected '215.4198349', error '0.0000000'