using System;

public static class Program

{

    public static void Main()

    {

        var data = new int[4][];

        data[0] = new int[2];

        data[1] = new int[3];

        data[2] = new int[4];

        data[3] = new int[5];

        Console.WriteLine(data.GetLength(1));                   

    }   

}