HOJ 1951 Beavergnaw

http://acm.hit.edu.cn/hoj/problem/view?id=1951

给出树干的直径和被松鼠啃去的体积 计算剩下树干的直径

#include <stdio.h>#include <math.h>int main(){    const double pi = acos(-1);    int d, v;//D, V    double diameter, tmp;        while (scanf("%d %d", &d, &v) != EOF)    {        if( d == 0 && v == 0 )            break;        tmp = (pow(d, 3) - 6 * v / pi);        diameter = pow(tmp, 1.0/3);        printf("%.3lf\n", diameter);    }    return 0;}