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#201326#5151. Bottle FlipBoulevardDust#AC ✓1ms3956kbC++20552b2023-10-05 13:43:472023-10-05 13:43:47

Judging History

你现在查看的是最新测评结果

  • [2023-10-05 13:43:47]
  • 评测
  • 测评结果：AC
  • 用时：1ms
  • 内存：3956kb
查看
  • [2023-10-05 13:43:47]
  • 提交

answer

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

long double h, r, A, W;
long double calc(long double x) {
	long double n1 = x * x * W + (h * h - x * x) * A;
	long double n2 = x * W + (h - x) * A;
	return n1 / n2;
}

int main() {
	scanf("%Lf%Lf%Lf%Lf", &h, &r, &A, &W);
	long double l = 0, r = h;
	for (int i = 1; i <= 1000; ++i) {
		long double m1 = (l + l + r) / 3;
		long double m2 = (l + r + r) / 3;
		if (calc(m1) > calc(m2)) l = m1;
		else r = m2;
		//printf("%.12Lf %.12Lf\n", l, r);
	}
	printf("%.12Lf\n", l);
	return 0;
}
源文件, 语言: C++20

详细

Test #1:

score: 100
Accepted
time: 1ms
memory: 3876kb

input:

22 4 1 4

output:

7.333333330272

result:

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

Test #2:

score: 0
Accepted
time: 1ms
memory: 3952kb

input:

7 2 655 988

output:

3.141594169534

result:

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

Test #3:

score: 0
Accepted
time: 0ms
memory: 3816kb

input:

1 1 1 2

output:

0.414213562141

result:

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

Test #4:

score: 0
Accepted
time: 0ms
memory: 3820kb

input:

1000 1000 999 1000

output:

499.874937285579

result:

ok found '499.8749373', expected '499.8749375', error '0.0000000'

Test #5:

score: 0
Accepted
time: 0ms
memory: 3884kb

input:

1000 1000 1 1000

output:

30.653430028164

result:

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

Test #6:

score: 0
Accepted
time: 0ms
memory: 3928kb

input:

1 1000 1 1000

output:

0.030653430022

result:

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

Test #7:

score: 0
Accepted
time: 0ms
memory: 3884kb

input:

1000 1000 482 483

output:

499.740932833276

result:

ok found '499.7409328', expected '499.7409326', error '0.0000000'

Test #8:

score: 0
Accepted
time: 0ms
memory: 3896kb

input:

1 1000 482 483

output:

0.499740933051

result:

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

Test #9:

score: 0
Accepted
time: 0ms
memory: 3928kb

input:

1 1000 1 2

output:

0.414213562141

result:

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

Test #10:

score: 0
Accepted
time: 0ms
memory: 3896kb

input:

1000 1000 1 2

output:

414.213562265415

result:

ok found '414.2135623', expected '414.2135624', error '0.0000000'

Test #11:

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

input:

961 1000 979 983

output:

480.010191954890

result:

ok found '480.0101920', expected '480.0101932', error '0.0000000'

Test #12:

score: 0
Accepted
time: 0ms
memory: 3888kb

input:

997 1000 977 983

output:

497.736985532713

result:

ok found '497.7369855', expected '497.7369880', error '0.0000000'

Test #13:

score: 0
Accepted
time: 0ms
memory: 3952kb

input:

1 928 1 66

output:

0.109600590815

result:

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

Test #14:

score: 0
Accepted
time: 0ms
memory: 3956kb

input:

1 928 2 88

output:

0.131005804162

result:

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

Test #15:

score: 0
Accepted
time: 0ms
memory: 3880kb

input:

1 928 3 74

output:

0.167600907392

result:

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

Test #16:

score: 0
Accepted
time: 0ms
memory: 3956kb

input:

1 928 3 41

output:

0.212908855428

result:

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

Test #17:

score: 0
Accepted
time: 0ms
memory: 3896kb

input:

1 928 1 12

output:

0.224009237751

result:

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

Test #18:

score: 0
Accepted
time: 0ms
memory: 3876kb

input:

2 928 89 93

output:

0.989009661037

result:

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

Test #19:

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

input:

7 928 51 72

output:

3.199009876703

result:

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

Test #20:

score: 0
Accepted
time: 0ms
memory: 3924kb

input:

722 547 709 752

output:

355.686391182887

result:

ok found '355.6863912', expected '355.6863918', error '0.0000000'

Test #21:

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

input:

242 742 518 920

output:

103.742903431567

result:

ok found '103.7429034', expected '103.7429035', error '0.0000000'

Test #22:

score: 0
Accepted
time: 0ms
memory: 3876kb

input:

873 701 43 201

output:

276.087555750350

result:

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

Test #23:

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

input:

268 228 527 562

output:

131.846091802744

result:

ok found '131.8460918', expected '131.8460919', error '0.0000000'

Test #24:

score: 0
Accepted
time: 0ms
memory: 3884kb

input:

312 558 341 839

output:

121.468385015920

result:

ok found '121.4683850', expected '121.4683851', error '0.0000000'

Test #25:

score: 0
Accepted
time: 0ms
memory: 3956kb

input:

274 85 178 364

output:

112.756490693054

result:

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

Test #26:

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

input:

641 539 341 977

output:

238.054438769564

result:

ok found '238.0544388', expected '238.0544387', error '0.0000000'

Test #27:

score: 0
Accepted
time: 0ms
memory: 3876kb

input:

245 861 438 872

output:

101.618383851430

result:

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

Test #28:

score: 0
Accepted
time: 0ms
memory: 3880kb

input:

640 181 156 606

output:

215.419834827439

result:

ok found '215.4198348', expected '215.4198349', error '0.0000000'
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