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

namespace yukicoderTest
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            double hour = 10;
            double min = 0;
            double plus = 0;
            double num = int.Parse(input);
            plus = num / 100;
            min = 60 * plus;
            while (min > 59)
            {
                min = min - 60;
                hour++;
            }
            Console.WriteLine("{0:00}" + ":" + "{1:00}", hour, min);

        }
    }
}