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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
#201206#5151. Bottle FlipPhantomThreshold#AC ✓0ms3920kbC++20458b2023-10-05 13:09:582023-10-05 13:09:59

Judging History

你现在查看的是最新测评结果

  • [2023-10-05 13:09:59]
  • 评测
  • 测评结果：AC
  • 用时：0ms
  • 内存：3920kb
查看
  • [2023-10-05 13:09:58]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
int main()
{
	double h,R,da,dw;
	cin>>h>>R>>da>>dw;
	auto check=[&](double x)
	{
		double dpos=x/2,upos=x+(1-x)/2;
		double dmass=x*dw,umass=(1-x)*da;
		return (dpos*dmass+upos*umass)/(dmass+umass);
	};
	double l=0,r=1;
	for(int i=1;i<=300;i++)
	{
		double lm=(l+l+r)/3,rm=(l+r+r)/3;
		if(check(lm)<check(rm))r=rm;
		else l=lm;
	}
	cout<<fixed<<setprecision(12)<<h*(l+r)/2<<endl;
	return 0;
}
源文件, 语言: C++20

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3804kb

input:

22 4 1 4

output:

7.333333465937

result:

ok found '7.3333335', expected '7.3333333', error '0.0000000'

Test #2:

score: 0
Accepted
time: 0ms
memory: 3912kb

input:

7 2 655 988

output:

3.141594156233

result:

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

Test #3:

score: 0
Accepted
time: 0ms
memory: 3900kb

input:

1 1 1 2

output:

0.414213569668

result:

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

Test #4:

score: 0
Accepted
time: 0ms
memory: 3920kb

input:

1000 1000 999 1000

output:

499.875063891678

result:

ok found '499.8750639', expected '499.8749375', error '0.0000003'

Test #5:

score: 0
Accepted
time: 0ms
memory: 3864kb

input:

1000 1000 1 1000

output:

30.653429973585

result:

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

Test #6:

score: 0
Accepted
time: 0ms
memory: 3868kb

input:

1 1000 1 1000

output:

0.030653429974

result:

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

Test #7:

score: 0
Accepted
time: 0ms
memory: 3856kb

input:

1000 1000 482 483

output:

499.741213842715

result:

ok found '499.7412138', expected '499.7409326', error '0.0000006'

Test #8:

score: 0
Accepted
time: 0ms
memory: 3856kb

input:

1 1000 482 483

output:

0.499741213843

result:

ok found '0.4997412', expected '0.4997409', error '0.0000003'

Test #9:

score: 0
Accepted
time: 0ms
memory: 3864kb

input:

1 1000 1 2

output:

0.414213569668

result:

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

Test #10:

score: 0
Accepted
time: 0ms
memory: 3804kb

input:

1000 1000 1 2

output:

414.213569668101

result:

ok found '414.2135697', expected '414.2135624', error '0.0000000'

Test #11:

score: 0
Accepted
time: 0ms
memory: 3900kb

input:

961 1000 979 983

output:

480.010303229336

result:

ok found '480.0103032', expected '480.0101932', error '0.0000002'

Test #12:

score: 0
Accepted
time: 0ms
memory: 3852kb

input:

997 1000 977 983

output:

497.737072312137

result:

ok found '497.7370723', expected '497.7369880', error '0.0000002'

Test #13:

score: 0
Accepted
time: 0ms
memory: 3664kb

input:

1 928 1 66

output:

0.109600591809

result:

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

Test #14:

score: 0
Accepted
time: 0ms
memory: 3664kb

input:

1 928 2 88

output:

0.131005805675

result:

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

Test #15:

score: 0
Accepted
time: 0ms
memory: 3664kb

input:

1 928 3 74

output:

0.167600907696

result:

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

Test #16:

score: 0
Accepted
time: 0ms
memory: 3856kb

input:

1 928 3 41

output:

0.212908859756

result:

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

Test #17:

score: 0
Accepted
time: 0ms
memory: 3836kb

input:

1 928 1 12

output:

0.224009239130

result:

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

Test #18:

score: 0
Accepted
time: 0ms
memory: 3856kb

input:

2 928 89 93

output:

0.989009666102

result:

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

Test #19:

score: 0
Accepted
time: 0ms
memory: 3844kb

input:

7 928 51 72

output:

3.199009990041

result:

ok found '3.1990100', expected '3.1990099', error '0.0000000'

Test #20:

score: 0
Accepted
time: 0ms
memory: 3796kb

input:

722 547 709 752

output:

355.686412036510

result:

ok found '355.6864120', expected '355.6863918', error '0.0000001'

Test #21:

score: 0
Accepted
time: 0ms
memory: 3792kb

input:

242 742 518 920

output:

103.742907192041

result:

ok found '103.7429072', expected '103.7429035', error '0.0000000'

Test #22:

score: 0
Accepted
time: 0ms
memory: 3852kb

input:

873 701 43 201

output:

276.087556536130

result:

ok found '276.0875565', expected '276.0875558', error '0.0000000'

Test #23:

score: 0
Accepted
time: 0ms
memory: 3836kb

input:

268 228 527 562

output:

131.846096915653

result:

ok found '131.8460969', expected '131.8460919', error '0.0000000'

Test #24:

score: 0
Accepted
time: 0ms
memory: 3916kb

input:

312 558 341 839

output:

121.468390735653

result:

ok found '121.4683907', expected '121.4683851', error '0.0000000'

Test #25:

score: 0
Accepted
time: 0ms
memory: 3796kb

input:

274 85 178 364

output:

112.756494794043

result:

ok found '112.7564948', expected '112.7564907', error '0.0000000'

Test #26:

score: 0
Accepted
time: 0ms
memory: 3860kb

input:

641 539 341 977

output:

238.054441345365

result:

ok found '238.0544413', expected '238.0544387', error '0.0000000'

Test #27:

score: 0
Accepted
time: 0ms
memory: 3856kb

input:

245 861 438 872

output:

101.618386569701

result:

ok found '101.6183866', expected '101.6183839', error '0.0000000'

Test #28:

score: 0
Accepted
time: 0ms
memory: 3788kb

input:

640 181 156 606

output:

215.419837422116

result:

ok found '215.4198374', expected '215.4198349', error '0.0000000'
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