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QOJ
| 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 |
|---|---|---|---|---|---|---|---|---|---|
| #501086 | #5152. Circular Caramel Cookie | Ink_bai | TL | 0ms | 3904kb | C++20 | 790b | 2024-08-02 13:53:30 | 2024-08-02 13:53:31 |
Judging History
answer
#include <bits/stdc++.h>
#define int long long
using namespace std;
signed main() {
int n;
cin >> n;
if(n % 4 == 0) n += 1;
long double l = sqrt(n/3.14159265358979), r = n;
if(l <= 1.41421356237) l = 1.41421356237;
while (l + 1e-9 < r) {
long double m = (l + r) / 2;
// cout << l << ' ' << r << ' ' << m << endl;
int sum = 0;
for(int i = 1; i <= m; i++) {
for(int j = 1; j <= m; j++) {
if(i*i + j*j <= m*m) {
sum++;
}
}
}
// cout << sum << endl;
if(sum * 4 >= n) {
r = m;
} else {
l = m;
}
}
cout << fixed << setprecision(10) << l << endl;
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3860kb
input:
11
output:
2.2360679774
result:
ok found '2.2360680', expected '2.2360680', error '0.0000000'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3904kb
input:
59
output:
4.9999999993
result:
ok found '5.0000000', expected '5.0000000', error '0.0000000'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3876kb
input:
1
output:
1.4142135624
result:
ok found '1.4142136', expected '1.4142136', error '0.0000000'
Test #4:
score: 0
Accepted
time: 0ms
memory: 3848kb
input:
2
output:
1.4142135624
result:
ok found '1.4142136', expected '1.4142136', error '0.0000000'
Test #5:
score: 0
Accepted
time: 0ms
memory: 3872kb
input:
3
output:
1.4142135624
result:
ok found '1.4142136', expected '1.4142136', error '0.0000000'
Test #6:
score: 0
Accepted
time: 0ms
memory: 3852kb
input:
4
output:
2.2360679775
result:
ok found '2.2360680', expected '2.2360680', error '0.0000000'
Test #7:
score: -100
Time Limit Exceeded
input:
1000000000