OJ-Problems-Source/QUSTOJ/1441.cpp
2016-05-01 18:42:06 +08:00

18 lines
239 B
C++

#include <cstdio>
using namespace std;
const double pi=3.1415926;
double round;
int main()
{
while(scanf("%lf",&round)==1)
{
double ans=4*pi*round*round*round/3;
printf("%.3lf\n",ans);
}
return 0;
}