#include <fstream>
#define xmax 60000

using namespace std;

 ifstream x ("poligon.in");
 ofstream y ("poligon.out");

 struct coord
 {
     int i;
     int j;
 };

 int n,m;
 coord p[802];
 coord point[60001];

 bool intersection(coord A1, coord B1, coord A2, coord B2)
 {
     int x1,x2,x3,x4;
     int y1,y2,y3,y4;

     x1=A1.i;  x2=B1.i;  x3=A2.i;  x4=B2.i;
     y1=A1.j;  y2=B1.j;  y3=A2.j;  y4=B2.j;

     int d;

     d=(x1-x2)*(y3-y4)-(y1-y2)*(x3-x4);

     if(d==0)
        return false;

     int xi,yi;

     xi=((x3-x4)*(x1*y2-y1*x2)-(x1-x2)*(x3*y4-y3*x4))/d;
     yi=((y3-y4)*(x1*y2-y1*x2)-(y1-y2)*(x3*y4-y3*x4))/d;

     if(xi<min(x1,x2) || xi>max(x1,x2))
        return false;

     if(yi<min(y1,y2) || yi>max(y1,y2))
        return false;

     if(xi<min(x3,x4) || xi>max(x3,x4))
        return false;

     if(yi<min(y3,y4) || yi>max(y3,y4))
        return false;

/*
     y<<xi<<' '<<yi;
     y<<'\n';
*/
     return true;
 }

int main()
{
    int i,j;

    x>>n>>m;

//Citesc punctele poligonului
    for(i=1;i<=n;i++)
       x>>p[i].i>>p[i].j;
    p[n+1]=p[1];

//Citesc punctele de pe plan
    for(i=1;i<=m;i++)
       x>>point[i].i>>point[i].j;

    int nr=0;

    point[0].i=xmax;

    for(j=1;j<=m;j++)
    {
        point[0].j=point[j].j;

        int nri=0;

        for(i=1;i<=n;i++)
        {
            if((point[j].i==p[i].i && point[j].j==p[i].j) || (point[j].i==p[i+1].i && point[j].j==p[i+1].j))
            {
                nri=1;
                break;
            }

            if(intersection(point[j],point[0],p[i],p[i+1])==true)
            {
                nri++;
                //y<<j<<" "<<i<<"\n";
            }
        }

        if(nri%2==1)
           nr++;
        //y<<nri<<'\n';
    }

    y<<nr<<'\n';

    return 0;
}