01. SinoTheWalker

using System;
using System.Linq;

namespace _01.SinoTheWalker
{
    class Program
    {
        static void Main()
        {
            int[] inputTime = Console.ReadLine().Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToArray();
            int hours = inputTime[0];
            int minutes = inputTime[1];
            int seconds = inputTime[2];

            TimeSpan leaveTime = new TimeSpan(hours, minutes, seconds);

            int steps = int.Parse(Console.ReadLine());
            int secondsPerStep = int.Parse(Console.ReadLine());

            int timeNeeded = steps * secondsPerStep;

            TimeSpan convertTime = TimeSpan.FromSeconds(timeNeeded);
            string[] arrivalTime = convertTime.ToString().Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries).ToArray();
            int arrivalHours = int.Parse(arrivalTime[0]);
            int arrivalMinutes = int.Parse(arrivalTime[1]);
            int arrivalSeconds = int.Parse(arrivalTime[2]);

            TimeSpan arrival = new TimeSpan(arrivalHours, arrivalMinutes, arrivalSeconds);

            TimeSpan sumTimes = leaveTime.Add(arrival);
            Console.WriteLine($"Time Arrival: {sumTimes:hh\\:mm\\:ss}");
        }
    }
}