Write a C# Sharp program to concat two given string of length atleast 1, after removing their first character

using System;

namespace exercises
{
   class Program
    {       
        static void Main(string[] args)
        {
            Console.WriteLine(test("Hello", "Hi"));
            Console.WriteLine(test("JS", "Python"));
            Console.ReadLine();
        }
        
         public static string test(string s1, string s2)
         {
             return s1.Substring(1) + s2.Substring(1);
         }
  }
}