using System;

public class Program

{

    public static void Main()

    {

        double a, b, c, d;

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

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

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

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

        bool first = a < b;

        bool second = c < d;

        bool statement = ((a <= c) && (c <= d) && (d <= b)) || ((c <= a) && (a <= b) && (b <= d));

        Console.WriteLine(statement);

    }

}