using System;
using System.Text;
using System.Collections.Generic;
public class Test
{
    public static void Main()
    {
        string[] poczatek = Console.ReadLine().Trim().Split(':');
        int[] czas = new int[]
        {
            int.Parse(poczatek[0]),
            int.Parse(poczatek[1])
        };
	string p;
        List<int> przerwy = new List<int>();
        while ((p = Console.ReadLine()) != null)
        {
            przerwy.Add(int.Parse(p));
        }
	Console.WriteLine(string.Format("{1:00}:{2:00}"), czas[0], czas[1]);
        }
}

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

MDg6MDAKMTUKMTUKMTU=

08:00
15
15
15