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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
#207997	#5151. Bottle Flip	Minhho	AC ✓	1ms	3816kb	C++20	749b	2023-10-09 02:52:06	2023-10-09 02:52:07

Judging History

你现在查看的是最新测评结果

[2023-10-09 02:52:07]
评测

测评结果：AC
用时：1ms
内存：3816kb

查看

[2023-10-09 02:52:06]
提交

answer

#define taskname "B"
#include <bits/stdc++.h>
#define ld long double

using namespace std;
const ld eps = 1e-6;
ld h, r, da, dw;

inline ld cal(ld x)
{
    ld num = dw * x * x / 2 + da * (h * h / 2 - x * x / 2);
    ld den = dw * x + da * (h - x);
    return num/den;
}

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    cin>>h>>r>>da>>dw;
    ld lo = 0, hi = h;
    for (int i=1; i<=1000; i++)
    {
        ld mid = (lo+hi)/2;
        ld h1 = cal(mid), h2 = cal(mid+eps);
//        cerr<<fixed<<setprecision(10)<<"CAL: "<<mid<<" "<<mid+eps<<" "<<h1<<" "<<h2<<"\n";
        if (h2 >= h1) hi = mid;
        else lo = mid;
    }
    cout<<fixed<<setprecision(10)<<lo;
}

源文件, 语言: C++20

详细

Test #1:

score: 100

Accepted

time: 1ms

memory: 3700kb

input:

22 4 1 4

output:

7.3333328333

result:

ok found '7.3333328', expected '7.3333333', error '0.0000001'

Test #2:

score: 0

Accepted

time: 0ms

memory: 3700kb

input:

7 2 655 988

output:

3.1415936720

result:

ok found '3.1415937', expected '3.1415942', error '0.0000002'

Test #3:

score: 0

Accepted

time: 1ms

memory: 3640kb

input:

1 1 1 2

output:

0.4142130624

result:

ok found '0.4142131', expected '0.4142136', error '0.0000005'

Test #4:

score: 0

Accepted

time: 0ms

memory: 3632kb

input:

1000 1000 999 1000

output:

499.8749247421

result:

ok found '499.8749247', expected '499.8749375', error '0.0000000'

Test #5:

score: 0

Accepted

time: 0ms

memory: 3704kb

input:

1000 1000 1 1000

output:

30.6534295317

result:

ok found '30.6534295', expected '30.6534300', error '0.0000000'

Test #6:

score: 0

Accepted

time: 0ms

memory: 3700kb

input:

1 1000 1 1000

output:

0.0306529300

result:

ok found '0.0306529', expected '0.0306534', error '0.0000005'

Test #7:

score: 0

Accepted

time: 0ms

memory: 3740kb

input:

1000 1000 482 483

output:

499.7409252545

result:

ok found '499.7409253', expected '499.7409326', error '0.0000000'

Test #8:

score: 0

Accepted

time: 0ms

memory: 3736kb

input:

1 1000 482 483

output:

0.4997404326

result:

ok found '0.4997404', expected '0.4997409', error '0.0000005'

Test #9:

score: 0

Accepted

time: 0ms

memory: 3760kb

input:

1 1000 1 2

output:

0.4142130624

result:

ok found '0.4142131', expected '0.4142136', error '0.0000005'

Test #10:

score: 0

Accepted

time: 0ms

memory: 3768kb

input:

1000 1000 1 2

output:

414.2135617983

result:

ok found '414.2135618', expected '414.2135624', error '0.0000000'

Test #11:

score: 0

Accepted

time: 1ms

memory: 3636kb

input:

961 1000 979 983

output:

480.0101838243

result:

ok found '480.0101838', expected '480.0101932', error '0.0000000'

Test #12:

score: 0

Accepted

time: 0ms

memory: 3704kb

input:

997 1000 977 983

output:

497.7369837958

result:

ok found '497.7369838', expected '497.7369880', error '0.0000000'

Test #13:

score: 0

Accepted

time: 0ms

memory: 3712kb

input:

1 928 1 66

output:

0.1096000908

result:

ok found '0.1096001', expected '0.1096006', error '0.0000005'

Test #14:

score: 0

Accepted

time: 1ms

memory: 3708kb

input:

1 928 2 88

output:

0.1310053042

result:

ok found '0.1310053', expected '0.1310058', error '0.0000005'

Test #15:

score: 0

Accepted

time: 0ms

memory: 3696kb

input:

1 928 3 74

output:

0.1676004074

result:

ok found '0.1676004', expected '0.1676009', error '0.0000005'

Test #16:

score: 0

Accepted

time: 0ms

memory: 3700kb

input:

1 928 3 41

output:

0.2129083554

result:

ok found '0.2129084', expected '0.2129089', error '0.0000005'

Test #17:

score: 0

Accepted

time: 1ms

memory: 3636kb

input:

1 928 1 12

output:

0.2240087377

result:

ok found '0.2240087', expected '0.2240092', error '0.0000005'

Test #18:

score: 0

Accepted

time: 0ms

memory: 3652kb

input:

2 928 89 93

output:

0.9890091617

result:

ok found '0.9890092', expected '0.9890097', error '0.0000005'

Test #19:

score: 0

Accepted

time: 0ms

memory: 3760kb

input:

7 928 51 72

output:

3.1990093767

result:

ok found '3.1990094', expected '3.1990099', error '0.0000002'

Test #20:

score: 0

Accepted

time: 1ms

memory: 3604kb

input:

722 547 709 752

output:

355.6863913153

result:

ok found '355.6863913', expected '355.6863918', error '0.0000000'

Test #21:

score: 0

Accepted

time: 1ms

memory: 3648kb

input:

242 742 518 920

output:

103.7429029633

result:

ok found '103.7429030', expected '103.7429035', error '0.0000000'

Test #22:

score: 0

Accepted

time: 0ms

memory: 3700kb

input:

873 701 43 201

output:

276.0875553400

result:

ok found '276.0875553', expected '276.0875558', error '0.0000000'

Test #23:

score: 0

Accepted

time: 1ms

memory: 3760kb

input:

268 228 527 562

output:

131.8460913863

result:

ok found '131.8460914', expected '131.8460919', error '0.0000000'

Test #24:

score: 0

Accepted

time: 1ms

memory: 3816kb

input:

312 558 341 839

output:

121.4683845753

result:

ok found '121.4683846', expected '121.4683851', error '0.0000000'

Test #25:

score: 0

Accepted

time: 1ms

memory: 3640kb

input:

274 85 178 364

output:

112.7564901897

result:

ok found '112.7564902', expected '112.7564907', error '0.0000000'

Test #26:

score: 0

Accepted

time: 0ms

memory: 3640kb

input:

641 539 341 977

output:

238.0544382267

result:

ok found '238.0544382', expected '238.0544387', error '0.0000000'

Test #27:

score: 0

Accepted

time: 0ms

memory: 3712kb

input:

245 861 438 872

output:

101.6183834214

result:

ok found '101.6183834', expected '101.6183839', error '0.0000000'

Test #28:

score: 0

Accepted

time: 0ms

memory: 3768kb

input:

640 181 156 606

output:

215.4198343896

result:

ok found '215.4198344', expected '215.4198349', error '0.0000000'