switchLesson.cs

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

namespace SoloLearn
{
    class switchLesson
    {
        static void Main(string[] args)
        {
            int num = Convert.ToInt32(Console.ReadLine());

            /*
            1 - Easy
            2 - Medium
            3 - Hard
            other - "Invalid option"
            */

            //your code goes here
            switch (num) 
            {
                case 1:
                    Console.WriteLine("Easy");
                    break;

                case 2:
                    Console.WriteLine("Medium");
                    break;

                case 3:
                    Console.WriteLine("Hard");
                    break;

                default:
                    Console.WriteLine("Invalid option");
                    break;

            }

            
        }
    }
}