using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace abc

{

    class program

    {

        public static void Main(string[] args)

        {

            Console.WriteLine("Enter how many employees");

            int n=0;

            var number="";

            while(!(Int32.TryParse(n,out number)))

            {

                n=Convert.ToInt32(Console.ReadLine());

                if(!Int32.TryParse(n,out number))

                {

                       Console.WriteLine(""**Enter only valid input***");

                }

            }

        }

    }

}