04. Back In 30 Minutes

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _4.Back_in_30_Minutes
{
    class Program
    {
        static void Main(string[] args)
        {
            int Hour = int.Parse(Console.ReadLine());
            int Minuties = int.Parse(Console.ReadLine());

            Hour = Hour * 60;
            int HourAfter = Hour + Minuties + 30;

            Hour = HourAfter / 60;
            Hour = Hour % 24;
            Minuties = HourAfter % 60;

            if(Minuties<10)
            {
                Console.WriteLine($"{Hour}:0{Minuties}");
            }
            else
            {
                Console.WriteLine($"{Hour}:{Minuties}");
            }



        }
    }
}