#include<iostream>
int yesno(int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4) {
    double p, q;
    p = 0;
    q = 0;
    if (x1 == y1 && x1 == x2 && x1 == y2 && x1 != x3 && x3 == x4 && x3 == y3 && x3 == y4) {
        return 0;
    } else {
        int a_1 = ((x4 - x3)*(y1 - y3) - (y4 - y3)*(x1 - x3));
        int a_2 = ((y4 - y3)*(x2 - x1) - (x4 - x3)*(y2 - y1));
        int a_3 = ((x2 - x1)*(y1 - y3) - (y2 - y1)*(x1 - x3));
        if (a_2 != 0) {
            p = a_1 / a_2;
            q = a_3 / a_2;
        }
        if (y1 == y2 && y1 == y3 && y1 == y4) {
            if (x3 > x2 && x3 > x1 && x4 > x1 && x4 > x2) {
                return 0;
            } else {
                return 1;
            }
        } else if (x1 == x2 && x1 == x3 && x1 == x4) {
           if (y3 > y2 && y3 > y1 && y4 > y1 && y4 > y2) {
                return 0;
           } else {
                return 1;
            }
           } else  if (a_2 == 0 && a_1 == 0 && a_3 != 0) {
             return 0;
        } else if (a_2 == 0 && a_1 != 0 && a_3 == 0) {
             return 0;
        } else if (a_2 == 0 && a_1 != 0 && a_3 != 0) {
             return 0;
        } else if (((p >= 0) && (p <= 1)) && ((q >= 0) && (q <= 1))) {
             return 1;
        } else if (((p >= 0) && (p <= 1)) || ((q >= 0) && (q <= 1))) {
             return 1;
        } else {
             return 0;
        }
    }
}
int main() {
    int x1, x2, x3, x4, y1, y2, y3, y4;
    std::cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
    if (yesno(x1, y1, x2, y2, x3, y3, x4, y4) == 1) {
        std::cout << "YES" << std::endl;
    } else {
        std::cout << "NO" << std::endl;
      }
}