1951.cpp

这是哈尔滨工业大学acmOJ的源代码

/*  This Code is Submitted by wywcgs for Problem 1951 on 2005-09-30 at 19:38:50 */ 
#include <stdio.h>
#include <math.h>
#define  PI  3.1415926535

int main()
{
	long D, V;
	double d, t;
	const double tr = (double)1 / 3;
	
	while(scanf("%ld %ld", &D, &V) == 2) {
		if(D == 0 && V == 0) {
			return 0;
		} else {
			t = (double)D * D * D - 6 * V / PI;
			d = pow(t, tr);
			printf("%.3lf\n", d);
		}
	}
	
	return 0;
}