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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
#154152#5152. Circular Caramel Cookieacm202226010311AC ✓1ms3880kbC++141.0kb2023-08-31 14:12:082023-08-31 14:12:09

Judging History

你现在查看的是最新测评结果

  • [2023-08-31 14:12:09]
  • 评测
  • 测评结果：AC
  • 用时：1ms
  • 内存：3880kb
查看
  • [2023-08-31 14:12:08]
  • 提交

answer

#include <iostream>
#include <vector>
#include <iomanip>
#include <cmath>
using namespace std;
int num(int a)//a代表r*r 
{
	int res=0;
	for(int i=int(sqrt(a));i>0;i--)
	res+=int(sqrt(a-i*i));
	res*=4;
	return res;
}
int main()
{
	int n;
	cin>>n;
	if(n<=3)
	{
		cout<<fixed<<setprecision(10)<<sqrt(2)<<endl;
		return 0;
	}
	if(n>=4&&n<=7)
	{
		cout<<fixed<<setprecision(10)<<sqrt(5)<<endl;
		return 0;
	}
	n++;
	int r=sqrt(n);
	int l=r/3;
	int mid;
	while(l<r)
	{
		mid=(l+r)/2;
		int t=num(mid*mid); 
		if(t>=n)r=mid;
		if(t<=n)l=mid;
	//	cout<<"l"<<l<<" "<<"r"<<r<<endl;
		if(l+1==r)break;
	}
	mid=(l+r)/2;
	int b=mid*mid;
	int e=(mid+1)*(mid+1);
	int in;
	while(b<e)
	{
	//	cout<<"b"<<b<<" "<<"e"<<e<<endl;
		in=(b+e)/2;
		int t=num(in);
		if(t>=n)e=in;
		else if(t<n)b=in+1;
	//	cout<<"b"<<b<<" "<<"e"<<e<<endl;
		if(b+1==e)break;
	}
	in=(b+e)/2;
	if(num(in)>=n)cout<<fixed<<setprecision(10)<<sqrt(in);
	else cout<<fixed<<setprecision(10)<<sqrt(in+1);
	return 0;
}
源文件, 语言: C++14

详细

Test #1:

score: 100
Accepted
time: 1ms
memory: 3776kb

input:

11

output:

2.2360679775

result:

ok found '2.2360680', expected '2.2360680', error '0.0000000'

Test #2:

score: 0
Accepted
time: 0ms
memory: 3764kb

input:

59

output:

5.0000000000

result:

ok found '5.0000000', expected '5.0000000', error '0.0000000'

Test #3:

score: 0
Accepted
time: 1ms
memory: 3860kb

input:

1

output:

1.4142135624

result:

ok found '1.4142136', expected '1.4142136', error '0.0000000'

Test #4:

score: 0
Accepted
time: 0ms
memory: 3772kb

input:

2

output:

1.4142135624

result:

ok found '1.4142136', expected '1.4142136', error '0.0000000'

Test #5:

score: 0
Accepted
time: 1ms
memory: 3648kb

input:

3

output:

1.4142135624

result:

ok found '1.4142136', expected '1.4142136', error '0.0000000'

Test #6:

score: 0
Accepted
time: 1ms
memory: 3832kb

input:

4

output:

2.2360679775

result:

ok found '2.2360680', expected '2.2360680', error '0.0000000'

Test #7:

score: 0
Accepted
time: 1ms
memory: 3852kb

input:

1000000000

output:

17841.8813189641

result:

ok found '17841.8813190', expected '17841.8813190', error '0.0000000'

Test #8:

score: 0
Accepted
time: 1ms
memory: 3772kb

input:

16

output:

3.1622776602

result:

ok found '3.1622777', expected '3.1622777', error '0.0000000'

Test #9:

score: 0
Accepted
time: 1ms
memory: 3780kb

input:

60

output:

5.0990195136

result:

ok found '5.0990195', expected '5.0990195', error '0.0000000'

Test #10:

score: 0
Accepted
time: 1ms
memory: 3784kb

input:

276

output:

10.0498756211

result:

ok found '10.0498756', expected '10.0498756', error '0.0000000'

Test #11:

score: 0
Accepted
time: 1ms
memory: 3796kb

input:

476

output:

13.0384048104

result:

ok found '13.0384048', expected '13.0384048', error '0.0000000'

Test #12:

score: 0
Accepted
time: 1ms
memory: 3828kb

input:

1860

output:

25.0199920064

result:

ok found '25.0199920', expected '25.0199920', error '0.0000000'

Test #13:

score: 0
Accepted
time: 1ms
memory: 3732kb

input:

2837456

output:

951.0084121605

result:

ok found '951.0084122', expected '951.0084122', error '0.0000000'

Test #14:

score: 0
Accepted
time: 1ms
memory: 3876kb

input:

871234652

output:

16653.6427246414

result:

ok found '16653.6427246', expected '16653.6427246', error '0.0000000'

Test #15:

score: 0
Accepted
time: 1ms
memory: 3648kb

input:

345230848

output:

10483.5002742405

result:

ok found '10483.5002742', expected '10483.5002742', error '0.0000000'

Test #16:

score: 0
Accepted
time: 1ms
memory: 3876kb

input:

506145784

output:

12693.5943688145

result:

ok found '12693.5943688', expected '12693.5943688', error '0.0000000'

Test #17:

score: 0
Accepted
time: 1ms
memory: 3768kb

input:

253745836

output:

8987.8400631075

result:

ok found '8987.8400631', expected '8987.8400631', error '0.0000000'

Test #18:

score: 0
Accepted
time: 1ms
memory: 3772kb

input:

659345872

output:

14487.7452006860

result:

ok found '14487.7452007', expected '14487.7452007', error '0.0000000'

Test #19:

score: 0
Accepted
time: 1ms
memory: 3820kb

input:

193830482

output:

7855.4483003836

result:

ok found '7855.4483004', expected '7855.4483004', error '0.0000000'

Test #20:

score: 0
Accepted
time: 1ms
memory: 3780kb

input:

981273

output:

559.5042448454

result:

ok found '559.5042448', expected '559.5042448', error '0.0000000'

Test #21:

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

input:

8732419

output:

1667.8513123177

result:

ok found '1667.8513123', expected '1667.8513123', error '0.0000000'

Test #22:

score: 0
Accepted
time: 1ms
memory: 3784kb

input:

9812379

output:

1767.9423067510

result:

ok found '1767.9423068', expected '1767.9423068', error '0.0000000'

Test #23:

score: 0
Accepted
time: 1ms
memory: 3880kb

input:

98273476

output:

5593.6146631673

result:

ok found '5593.6146632', expected '5593.6146632', error '0.0000000'

Test #24:

score: 0
Accepted
time: 1ms
memory: 3820kb

input:

897972343

output:

16907.2445123385

result:

ok found '16907.2445123', expected '16907.2445123', error '0.0000000'

Test #25:

score: 0
Accepted
time: 1ms
memory: 3776kb

input:

28736734

output:

3025.0661149800

result:

ok found '3025.0661150', expected '3025.0661150', error '0.0000000'

Test #26:

score: 0
Accepted
time: 1ms
memory: 3740kb

input:

88234239

output:

5300.2388625420

result:

ok found '5300.2388625', expected '5300.2388625', error '0.0000000'

Test #27:

score: 0
Accepted
time: 1ms
memory: 3776kb

input:

928379434

output:

17191.1102899144

result:

ok found '17191.1102899', expected '17191.1102899', error '0.0000000'

Test #28:

score: 0
Accepted
time: 1ms
memory: 3836kb

input:

23765822

output:

2751.0732451173

result:

ok found '2751.0732451', expected '2751.0732451', error '0.0000000'

Test #29:

score: 0
Accepted
time: 1ms
memory: 3824kb

input:

3427481

output:

1045.1435308129

result:

ok found '1045.1435308', expected '1045.1435308', error '0.0000000'

Test #30:

score: 0
Accepted
time: 1ms
memory: 3820kb

input:

234987432

output:

8649.2663272673

result:

ok found '8649.2663273', expected '8649.2663273', error '0.0000000'

Test #31:

score: 0
Accepted
time: 1ms
memory: 3824kb

input:

3242949

output:

1016.6439888181

result:

ok found '1016.6439888', expected '1016.6439888', error '0.0000000'

Test #32:

score: 0
Accepted
time: 1ms
memory: 3856kb

input:

238423423

output:

8712.2688778527

result:

ok found '8712.2688779', expected '8712.2688779', error '0.0000000'

Test #33:

score: 0
Accepted
time: 1ms
memory: 3848kb

input:

23784378

output:

2752.1477067919

result:

ok found '2752.1477068', expected '2752.1477068', error '0.0000000'

Test #34:

score: 0
Accepted
time: 1ms
memory: 3840kb

input:

83246355

output:

5148.2704862895

result:

ok found '5148.2704863', expected '5148.2704863', error '0.0000000'
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