import java.util.Scanner;

public class sustezatel {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        System.out.print("Vreme na igrach 1: ");
        int sustezatel1 = Integer.parseInt(scanner.nextLine());
        if (!(sustezatel1 > 0 && sustezatel1 <= 50)) {
            System.out.println();
            System.out.print("Invalid time");
            return;
        }

        System.out.print("Vreme na igrach 2: ");
        int sustezatel2 = Integer.parseInt(scanner.nextLine());
        if (!(sustezatel2 > 0 && sustezatel2 <= 50)) {
            System.out.println();
            System.out.print("Invalid time");
            return;
        }

        System.out.print("Vreme na igrach 3: ");
        int sustezatel3 = Integer.parseInt(scanner.nextLine());
        if (!(sustezatel3 > 0 && sustezatel3 <= 50)) {
            System.out.println();
            System.out.print("Invalid time");
            return;
        }
        System.out.println();

        int sum = sustezatel1 + sustezatel2+ sustezatel3;
        int minutes = Math.abs(sum / 60);
        int seconds = Math.abs(sum % 60);

        System.out.printf("Total time: %d:%02d", minutes, seconds);
    }
}