Sum Seconds

import java.util.Scanner;

public class SumSeconds {
    public static void main(String[] args) {
        Scanner scanner = new Scanner (System.in);
        int seconds1 = Integer.parseInt (scanner.nextLine ());
        int seconds2 = Integer.parseInt (scanner.nextLine ());
        int seconds3 = Integer.parseInt (scanner.nextLine ());
        int sumTime = seconds1 + seconds2 + seconds3;
        int timeMinutes = sumTime / 60;
        int timeSeconds = sumTime % 60;
        if (timeSeconds < 10) {
            System.out.printf ("%d:%02d", timeMinutes, timeSeconds);
        } else {
            System.out.printf ("%d:%d", timeMinutes, timeSeconds);
        }
    }
}