ProgBasicsJavaBook3.1SimpleConditions07SumSeconds

import java.util.Scanner;

public class Y01SumSeconds {
    public static void main(String [] Args) {
        Scanner scanner = new Scanner(System.in);

        int player1 = Integer.parseInt(scanner.nextLine());
        int player2 = Integer.parseInt(scanner.nextLine());
        int player3 = Integer.parseInt(scanner.nextLine());


        int sumSeconds = player1 + player2 + player3;

        int minutes = sumSeconds / 60;
        int seconds = sumSeconds % 60;

        if(seconds < 10){
            System.out.printf("%d:0%d", minutes, seconds);
        } else {
            System.out.printf("%d:%d", minutes, seconds);
        }
    }
}