BPA Contest 2006

//package bpa;

import java.util.Scanner;

/**
 *
 * @author Devin Mitchell
 */
public class SpeedingHighway {

    private static int l; //speed limit
    private static int s; //speed driving
    private static int d; //distance

    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);

        l = sc.nextInt(); //initiating speed limit
        s = sc.nextInt(); //initiating driving speed
        d = sc.nextInt(); //initiating distance
        int time = 0;

        if ( l < 0 || s < 0 || d < 0) { // checks if 3 positive integers were entered
            System.out.println("You must enter 3 positive numbers!");
            return;
        }

        if (s >= l) {
            time = (int)(60 * ((double) d / l)) - (int)(60 * ((double) d / s)); // calculates the time saved

            System.out.println();
            System.out.println(time + " minutes saved.");
        }
    }
}