using System;

public class Program

{

    public static void Main()

    {

        double a, b, c, d;

        Console.WriteLine("Въведете a, b, c и d:");

        a = double.Parse(Console.ReadLine());

        b = double.Parse(Console.ReadLine());

        c = double.Parse(Console.ReadLine());

        d = double.Parse(Console.ReadLine());

        Console.WriteLine((c <= b && b <= d) || (c <=a && a <= d));

    }

}