using System;

using System.Collections;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Program o = new Program();

        var x = o.DisplayTime(12,56,6);

        foreach(var el in x)

        {

        Console.WriteLine(el);

​

        }

    }

    public List<string> DisplayTime(int hour,int minutes, int totalMinutes)

    {       

​

        var result = new List<string>();

         if((hour < 0 || hour > 24) || 

             (minutes < 0 || minutes > 60 ) || 

             totalMinutes < 0 )

                return result;

        Console.WriteLine(hour+minutes+totalMinutes);

        var tempHour = minutes == 60 ? hour++ : hour;

        var tempMinutes =  minutes == 60 ? 0: minutes;

        for(int i = tempMinutes; i < 60 &&  totalMinutes > 0; i++,totalMinutes--)

        {

            if(i == 60)

            {

              tempHour++;

              tempMinutes = 0;

               if(tempHour == 24)

               {

                   tempHour = 0;

               }

                result.Add(tempHour +":"+ (string)(tempMinutes < 10 ? "0"+tempMinutes : tempMinutes.ToString()));

            }

        }

        return result;

    }

}