poj 1665（水题）

#include<iostream>
using namespace std;
#define PI 3.1415927
int main(){
    double ans_d,ans_mph,d,t;
    int r,cnt = 0;
    while(scanf("%lf%d%lf",&d,&r,&t)==3&&r){
        ans_d = d/12/5280*PI*r;
        ans_mph = ans_d*3600/t;
        printf("Trip #%d: %.2lf %.2lf\n",++cnt,ans_d,ans_mph);
    }
    return 0;
}