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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#201397#5152. Circular Caramel CookieVengeful_Spirit#AC ✓2ms3900kbC++14842b2023-10-05 14:06:152023-10-05 14:06:16

Judging History

你现在查看的是最新测评结果

  • [2023-10-05 14:06:16]
  • 评测
  • 测评结果：AC
  • 用时：2ms
  • 内存：3900kb
查看
  • [2023-10-05 14:06:15]
  • 提交

answer

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

long long n;
double eps = 1e-11;
int main() {
    cin >> n;
    n = (n + 4) / 4;
    long double l = 0, r =  70000;
    // long double l = 4.95, r = 5.05;
    while(r - l >= eps) {
        long double mid = (l + r) / 2.0;
        long long num = 0;
        for(int i = 1; i <= 70000; ++i) {
            long long _ = (long long)(mid*mid)-(long long)(i*i);
            if(_ <= 0) break;
            long long ans = (long long)sqrt(_);
            // cerr << "_= " << _ << " " << ans << "\n";
            num += ans;
            if(ans == 0) break;
        }
        // cerr << mid << " " << num << "\n";
        if(num >= n) {
            r = mid;
        } else {
            l = mid;
        }
    }
    cout << fixed << setprecision(10) << (r+l)/2;
    return 0;
}
Source code, Language: C++14

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 1ms
memory: 3844kb

input:

11

output:

2.2360679775

result:

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

Test #2:

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

input:

59

output:

5.0000000000

result:

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

Test #3:

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

input:

1

output:

1.4142135624

result:

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

Test #4:

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

input:

2

output:

1.4142135624

result:

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

Test #5:

score: 0
Accepted
time: 0ms
memory: 3800kb

input:

3

output:

1.4142135624

result:

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

Test #6:

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

input:

4

output:

2.2360679775

result:

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

Test #7:

score: 0
Accepted
time: 2ms
memory: 3820kb

input:

1000000000

output:

17841.8813189641

result:

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

Test #8:

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

input:

16

output:

3.1622776602

result:

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

Test #9:

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

input:

60

output:

5.0990195136

result:

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

Test #10:

score: 0
Accepted
time: 1ms
memory: 3812kb

input:

276

output:

10.0498756211

result:

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

Test #11:

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

input:

476

output:

13.0384048104

result:

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

Test #12:

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

input:

1860

output:

25.0199920064

result:

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

Test #13:

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

input:

2837456

output:

951.0084121605

result:

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

Test #14:

score: 0
Accepted
time: 2ms
memory: 3796kb

input:

871234652

output:

16653.6427246414

result:

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

Test #15:

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

input:

345230848

output:

10483.5002742405

result:

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

Test #16:

score: 0
Accepted
time: 2ms
memory: 3884kb

input:

506145784

output:

12693.5943688145

result:

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

Test #17:

score: 0
Accepted
time: 1ms
memory: 3760kb

input:

253745836

output:

8987.8400631075

result:

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

Test #18:

score: 0
Accepted
time: 2ms
memory: 3812kb

input:

659345872

output:

14487.7452006860

result:

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

Test #19:

score: 0
Accepted
time: 1ms
memory: 3660kb

input:

193830482

output:

7855.4483003836

result:

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

Test #20:

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

input:

981273

output:

559.5042448454

result:

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

Test #21:

score: 0
Accepted
time: 1ms
memory: 3664kb

input:

8732419

output:

1667.8513123177

result:

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

Test #22:

score: 0
Accepted
time: 1ms
memory: 3792kb

input:

9812379

output:

1767.9423067510

result:

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

Test #23:

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

input:

98273476

output:

5593.6146631673

result:

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

Test #24:

score: 0
Accepted
time: 2ms
memory: 3844kb

input:

897972343

output:

16907.2445123385

result:

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

Test #25:

score: 0
Accepted
time: 1ms
memory: 3800kb

input:

28736734

output:

3025.0661149800

result:

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

Test #26:

score: 0
Accepted
time: 1ms
memory: 3808kb

input:

88234239

output:

5300.2388625420

result:

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

Test #27:

score: 0
Accepted
time: 2ms
memory: 3788kb

input:

928379434

output:

17191.1102899144

result:

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

Test #28:

score: 0
Accepted
time: 1ms
memory: 3844kb

input:

23765822

output:

2751.0732451173

result:

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

Test #29:

score: 0
Accepted
time: 1ms
memory: 3900kb

input:

3427481

output:

1045.1435308129

result:

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

Test #30:

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

input:

234987432

output:

8649.2663272673

result:

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

Test #31:

score: 0
Accepted
time: 1ms
memory: 3800kb

input:

3242949

output:

1016.6439888181

result:

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

Test #32:

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

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: 3876kb

input:

83246355

output:

5148.2704862895

result:

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