using System;

public class Test
{
	public static void Main()
	{
	    int[, ,] x = new int[,,]{ {{ 3, 4, 5 }, { 3, 5, 6 }, { 5, 4, 3 }} };
            int det_of_x = 1;
            foreach (var i in x)
            {
                det_of_x *= i;
            }
            
            Console.WriteLine(det_of_x);
	}
}