imported>Unknown at 05:23, 7 February 2021

2021-02-07T05:23:28Z

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#include <iostream>
#include <cmath>

using namespace std;
#define PI 3.141592

int main()
{
cout.setf(ios::fixed, ios::floatfield);
cout.setf(ios::showpoint);
cout.precision(3);

double a, s1, s2, s3;
while(cin>>a) {
s1 = (PI*a*a/12 - ((sqrt(3)/4 - 1.0/4)*a*a ))*4;
s2 = ((a*a*PI/2 - a*a) - s1) * 2;
s3 = a*a - s1 - s2;
cout << s1 << " " << s2 << " " << s3 <<endl;
}
return 0;
}

[[IsThisIntegration？]]

IsThisIntegration？/허준수 - Revision history

imported>Unknown at 05:23, 7 February 2021