#include<cstdio> #define PI 3.1415927 int main() { double r; while (scanf_s("%lf", &r) != EOF) { printf( * r*r*r*PI / ); } ; }
#include<cstdio> #define PI 3.1415927 int main() { double r; while (scanf_s("%lf", &r) != EOF) { printf( * r*r*r*PI / ); } ; }