ZOJ-1813

import java.util.Scanner;public class Main{public static void main(String[] args){Scanner sc = new Scanner(System.in);int i = 0;while (true){double diameter = sc.nextDouble();int revolutions = sc.nextInt();double seconds = sc.nextDouble();if (revolutions == 0)break;double miles = 3.1415927 * diameter * revolutions / 5280 / 12;double mhp = miles * 3600 / seconds;System.out.format("Trip #%d: %.2f %.2f\n", ++i, miles, mhp);}}}