HDU2002

#include<stdio.h>#define PI 3.1415927int main(){double r,v;while(scanf("%lf",&r)!=EOF){v=4*PI*r*r*r/3;printf("%.3lf\n",v);}return 0;}/* float用%f,double用%lf,long double 用%Lf ,scanf和printf都改*///以后这种题就都声明成double,不用float了