문제 링크입니다: www.acmicpc.net/problem/21335
21335번: Another Eruption
A volcano has recently erupted in Geldingadalur, Iceland. Fortunately this eruption is relatively small, and---unlike the infamous Eyjafjallajökull eruption---is not expected to cause delayed international flights or global outrage. There is some concern
www.acmicpc.net
간단한 수학 문제였습니다.
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| #include <iostream> | |
| #include <cmath> | |
| using namespace std; | |
| const double PI = 3.14159265359; | |
| int main(void) | |
| { | |
| ios_base::sync_with_stdio(0); | |
| cin.tie(0); | |
| double a; | |
| cin >> a; | |
| double perimeter = sqrt(a / PI) * 2 * PI; | |
| printf("%.7lf\n", perimeter); | |
| return 0; | |
| } |
개발환경:Visual Studio 2017
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