y_q5

import java.util.*;

public class Q5 {

	public static void main(String[] args) {
		int up_hours = 0, down_hours = 0;
		int up_min = 0, down_min = 0;
		int total_hour = 0, total_min = 0;
		Scanner s = new Scanner(System.in);
		System.out.println("enter take-off hour: ");
		up_hours = s.nextInt();
		System.out.println("enter take-off minutes: ");
		up_min = s.nextInt();
		System.out.println("enter landing hour: ");
		down_hours = s.nextInt();
		System.out.println("enter landing minutes: ");
		down_min = s.nextInt();

		total_hour = down_hours - up_hours;
		if(total_hour==0)
			total_min = up_min + down_min;
		else {
			total_min = 60 - up_min + down_min;
			if(total_min>60) {
				total_hour++;
				total_min = total_min - 60;
			}
		}
		System.out.println("the flight takes "+total_hour+" hours and "+total_min+" minutes");

	}

}