namespace gowater 
{
    class Program {
        static void Main()
        {
			try
			{

			}
			catch (Exception)
			{

				throw;
			}
        }
    }
}

namespace gowater 
{
    class Program {
        static void Main()
        {
			try
			{
				int[] arr = { 1, 2, 3 };
				Console.WriteLine(arr[3]);
			}
			catch (Exception e)
			{
                Console.WriteLine(e.Message);
				throw;
			}
        }
    }
}