10209 - Is This Integration ?

#include 
     
      #include 
      
       /**///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);    }}