#include <stdio.h>

typedef struct tocka {
    // vasiot kod ovde
    int x,y;
} tocka;

typedef struct otsecka {
    // vasiot kod ovde
    tocka t1, t2;
} otsecka;

int max(int a, int b)
{
	if (a>b)
        return a;
    else
        return b;
}
int min(int a, int b)
{
	if (a<b)
        return a;
    else
        return b;
}
int naOtsecka(tocka p, tocka q, tocka r)
{
    if (q.x <= max(p.x, r.x)&&q.x >= min(p.x, r.x)&&q.y <= max(p.y, r.y) && q.y >= min(p.y, r.y))
       return 1;

    return 0;
}
int orientation(tocka p, tocka q, tocka r)
{
    int val = (q.y - p.y) * (r.x - q.x) -
              (q.x - p.x) * (r.y - q.y);

    if (val == 0) return 0;

    if (val>0)
        return 1;
    else
        return 2;
}
int se_secat(otsecka o1, otsecka o2)
{
    // vashiot kod ovde

    int d1 = orientation(o1.t1, o1.t2, o2.t1);
    int d2 = orientation(o1.t1, o1.t2, o2.t2);
    int d3 = orientation(o2.t1, o2.t2, o1.t1);
    int d4 = orientation(o2.t1, o2.t2, o1.t2);
 //printf("%d %d %d %d\n", d1, d2, d3, d4);
    if (d1 != d2 && d3 != d4)
        return 1;
 	if (d1 == 0 &&  naOtsecka(o1.t1, o2.t1, o1.t2)) return 1;
 	if (d2 == 0 &&  naOtsecka(o1.t1, o2.t2, o1.t2)) return 1;
 	if (d3 == 0 &&  naOtsecka(o2.t1, o1.t1, o2.t2)) return 1;
 	if (d4 == 0 &&  naOtsecka(o2.t1, o1.t2, o2.t2)) return 1;

    return 0;
}
int main() {
    float x1, y1, x2, y2;
    scanf("%f %f %f %f", &x1, &y1, &x2, &y2);
    //printf("%f\n",y1);
    tocka t1 = { x1, y1 };
    tocka t2 = { x2, y2 };
    otsecka o1 = { t1, t2 };
    scanf("%f %f %f %f", &x1, &y1, &x2, &y2);
    tocka t3 = { x1, y1 };
    tocka t4 = { x2, y2 };
    otsecka o2 = { t3, t4 };

    printf("%d\n", se_secat(o1, o2));
    return 0;
}