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답안 #944522

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
944522 2024-03-12T21:07:54 Z rainboy 제곱근 구하기 2 (gs13068_sqrt2) C++17
1 / 1
 1 ms 420 KB 
#include <math.h>
#include <stdio.h>

long long abs_(long long a) { return a > 0 ? a : -a; }

int main() {
	long long n, r;

	scanf("%lld", &n);
	r = sqrt(n);
	while (abs_(r * r - n) > abs_((r + 1) * (r + 1) - n))
		r++;
	while (abs_(r * r - n) > abs_((r - 1) * (r - 1) - n))
		r--;
	printf("%f\n", (double) r / 2 + (double) n / r / 2);
	return 0;
}

Compilation message

sqrt2.cpp: In function 'int main()':
sqrt2.cpp:9:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |  scanf("%lld", &n);
      |  ~~~~~^~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 416 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 420 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 420 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 348 KB Output is correct