UVA 10209

10209 - Is This Integration ?

#include <stdio.h>
#include <math.h>
/*

*/
//多次错误都是因为我将PI定义为3.1415926
#define  PI acos(-1.0)
int main()
{
    double r;
    while(scanf("%lf",&r)!=EOF)
    {
        double x,y,z;
        z=r*r*(1-PI/6.0 - sqrt(3.0)/4);
        y=r*r*(1-PI/4.0 )-2*z;
        x=r*r *(PI/2.0 - 1)-2*y;

        printf("%.3lf %.3lf %.3lf\n",x, 4.0*y, 4.0*z);

    }
}