using System;

​

     public class Program

    {        

        public static void Main(string[] args)

        {

            string s = "123";

            Console.WriteLine(false && s.Length<2 ? true : s.Substring(0,2).ToUpper() != "GA"); //True

            Console.WriteLine(false && (s.Length<2 ? true : s.Substring(0,2).ToUpper() != "GA")); // False

        }

    }