using System;

public class Program

{

    public static void Main()

    {

          TimeSpan time = TimeSpan.Parse(Console.ReadLine());

            int step = int.Parse(Console.ReadLine());

            int seconds = int.Parse(Console.ReadLine());

​

            long sumStep = step * seconds;

            TimeSpan asdf = TimeSpan.FromSeconds(sumStep);

​

​

            TimeSpan timeSum = time + asdf;

​

            Console.WriteLine("Time Arrival: {0:hh\\:mm\\:ss}", timeSum);

    }

}