#include <iostream>
#include <cmath>
#include <vector>
#include <map>
#include <stdio.h>
#include <string>
#include <algorithm>
#include <set>
#include <ctime>

using namespace std;

#define loop(i,x,n)  for (int i = x ; i<=n ; i++)
#define dloop(i,x,n) for (int i = x ; i>=n ; i--)
#define pb push_back
#define mp make_pair
#define pi 3.1415926535897932384626433832795
#define size(x) (int) x.size()
#define ll long long
#define y1 y23452345423
const long long inf=1e9;

class point{
public:
  int x,y;
} p1,p2,p3,p4;
bool RectanglesIntersects(double x1,double y1, double x2, double y2,

               double x3,double y3, double x4, double y4)
{
    if ((x3 - x2)*(x4 - x1) > 0) return false;

if ((y3 - y2)*(y4 - y1) > 0) return false;

return true;
}
bool intersect(double x1,double y1, double x2, double y2,

               double x3,double y3, double x4, double y4)
{
 double ABx, ABy, ACx, ACy, ADx, ADy;

double CAx, CAy, CBx, CBy, CDx, CDy;

double ACxAB, ADxAB, CAxCD, CBxCD;

 if (!RectanglesIntersects(min(x1,x2),min(y1,y2),max(x1,x2),max(y1,y2),

    min(x3,x4),min(y3,y4),max(x3,x4),max(y3,y4))) return 0;

ACx = x3 - x1; ACy = y3 - y1;

ABx = x2 - x1; ABy = y2 - y1;

ADx = x4 - x1; ADy = y4 - y1;

CAx = x1 - x3; CAy = y1 - y3;

CBx = x2 - x3; CBy = y2 - y3;

CDx = x4 - x3; CDy = y4 - y3;

ACxAB = ACx * ABy - ACy * ABx;

ADxAB = ADx * ABy - ADy * ABx;

CAxCD = CAx * CDy - CAy * CDx;

CBxCD = CBx * CDy - CBy * CDx;

return ACxAB * ADxAB <= 0 && CAxCD * CBxCD <= 0;

}
int main()
{
freopen("input.txt","r",stdin);
freopen("output.txt","w",stdout);
  scanf("%d%d%d%d%d%d%d%d",&p1.x,&p1.y,&p2.x,&p2.y,&p3.x,&p3.y,&p4.x,&p4.y);
      if (intersect(p1.x,p1.y,p2.x,p2.y,p3.x,p3.y,p4.x,p4.y)) printf("Yes\n");
      else printf("No\n");
return 0;
}