// 2023 IUSB Programming Competition
// Round 2 Problem 1
// Alarm Clock
// Solution by Liguo Yu

import java.util.Scanner;

public class round2_p1
{
    public static void main(String[] args)
    {
        Scanner input = new Scanner(System.in);
        String current_time = input.next();
        String ampm = input.next();
        int sleep_time = input.nextInt();
        
        int colon_position = current_time.indexOf(':');
        String current_hour = current_time.substring(0, colon_position);
        String current_minute = current_time.substring(colon_position+1);
        
        int hours = Integer.parseInt(current_hour);
        if(hours == 12) hours = 0;
        int minutes = Integer.parseInt(current_minute);
        
        if(ampm.equals("pm"))
        {
            hours = hours + 12;
        }
        
        int sleep_hours = (sleep_time + minutes) / 60;
        int a_minutes = (sleep_time + minutes) % 60;
        String alarm_minutes;
        if(a_minutes > 9) alarm_minutes = Integer.toString(a_minutes);
        else alarm_minutes = "0" + Integer.toString(a_minutes);
 
        int alarm_hour = hours + sleep_hours;
        alarm_hour = alarm_hour % 24;
        
        String alarm_ampm;
        if (alarm_hour > 11) alarm_ampm = "pm";
        else alarm_ampm = "am";
        
        alarm_hour = alarm_hour % 12;
        if(alarm_hour == 0) alarm_hour = 12;
        
        System.out.println(alarm_hour + ":" + alarm_minutes + " " + alarm_ampm);
    }
}