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답안 #27239

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
27239 2017-07-11T11:37:29 Z TAMREF 제곱근 구하기 2 (gs13068_sqrt2) C++11
1 / 1
 0 ms 2032 KB 
#include <bits/stdc++.h>
using namespace std;
int main(){
    long long n,a;
    double ans;
    scanf("%lld",&n);
    a=(long long)sqrt(n);
    if(n-a*a>a){
        ++a;
        ans=(1.-(double)(a*a-n)/(2*a*a))*a;
    }else{
        ans=(1.+(double)(n-a*a)/(2*a*a))*a;
    }
    printf("%.6f\n",ans);
}

Compilation message

sqrt2.cpp: In function 'int main()':
sqrt2.cpp:6:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld",&n);
                     ^

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 2032 KB Output is correct
2 Correct 0 ms 2032 KB Output is correct
3 Correct 0 ms 2032 KB Output is correct
4 Correct 0 ms 2032 KB Output is correct
5 Correct 0 ms 2032 KB Output is correct
6 Correct 0 ms 2032 KB Output is correct
7 Correct 0 ms 2032 KB Output is correct
8 Correct 0 ms 2032 KB Output is correct
9 Correct 0 ms 2032 KB Output is correct
10 Correct 0 ms 2032 KB Output is correct
11 Correct 0 ms 2032 KB Output is correct
12 Correct 0 ms 2032 KB Output is correct
13 Correct 0 ms 2032 KB Output is correct
14 Correct 0 ms 2032 KB Output is correct
15 Correct 0 ms 2032 KB Output is correct
16 Correct 0 ms 2032 KB Output is correct
17 Correct 0 ms 2032 KB Output is correct
18 Correct 0 ms 2032 KB Output is correct
19 Correct 0 ms 2032 KB Output is correct
20 Correct 0 ms 2032 KB Output is correct