using System;

public class Program

{

    public static decimal modN(decimal a, decimal b = 12)

{

    decimal c = a % b;

    if ((c < 0 && b > 0) || (c > 0 && b < 0)) {

        c += b;

    }

    return c;

}

    public static bool overlaps(int a, int b, int c, int d)

{

    return modN(c - a) <= modN(b - a) || modN(a - c) <= modN(d - c);

}

    public static void Main()

    {

        Console.WriteLine(overlaps(10,1,11,5));

    }

}