using System;
using System.IO;

namespace CodeGolf
{
    class timeArithmetic
    {
        static void Main()
        {
            StreamReader reader = new StreamReader(Console.OpenStandardInput());
            string[] lines = reader.ReadToEnd().Split(new[] {Environment.NewLine}, StringSplitOptions.None);
            foreach (var line in lines)
            {
                string[] times = line.Split('+');
                DateTime t1 = DateTime.Parse(times[0]);
                TimeSpan t2 = TimeSpan.Parse(times[1]);
                DateTime t3 = t1.Add(t2);
                Console.WriteLine("{0:HH\\:mm\\:ss}+{1:hh\\:mm\\:ss}={2:HH\\:mm\\:ss}", t1, t2, t3);
            }
        }
    }
}