import java.util.*;

class Line {
    long x1, x2, y1, y2;

    Line(long x1, long y1, long x2, long y2) {
        if(x1 > x2 || (x1 == x2 && y1 > y2)) {
            x1 = x1^x2;
            x2 = x1^x2;
            x1 = x1^x2;

            y1 = y1^y2;
            y2 = y1^y2;
            y1 = y1^y2;
        }

        this.x1 = x1;
        this.y1 = y1;
        this.x2 = x2;
        this.y2 = y2;
    }

    public int crossProduct(long x0, long y0) {
        long val = (x0-x1)*(y2-y1) - (y0-y1)*(x2-x1);
        return val > 0 ? 1 : val < 0 ? -1 : 0;
    }
} 

public class _17387 {
    static boolean comparePoint(long x1, long y1, long x2, long y2) {
        if(x1 < x2) return true;
        else if(x1 == x2 && y1 <= y2) return true;
        else return false;
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        
        long x1 = sc.nextLong(), y1 = sc.nextLong(), x2 = sc.nextLong(), y2 = sc.nextLong();
        Line L1 = new Line(x1, y1, x2, y2);
        long x3 = sc.nextLong(), y3 = sc.nextLong(), x4 = sc.nextLong(), y4 = sc.nextLong();
        Line L2 = new Line(x3, y3, x4, y4);
        
        sc.close();

        int crossABCD = L1.crossProduct(x3, y3) * L1.crossProduct(x4, y4);
        int crossCDAB = L2.crossProduct(x1, y1) * L2.crossProduct(x2, y2);

        int res = 0;

        if(crossABCD == 0 && crossCDAB == 0) {
            if(comparePoint(L1.x1, L1.y1, L2.x2, L2.y2) && comparePoint(L2.x1, L2.y1, L1.x2, L1.y2)) {
                res = 1;
            }
        }

        else if(crossABCD <= 0 && crossCDAB <= 0) {
            res = 1;
        }

        System.out.println(res);
    }
}