#include <iostream>
#include <fstream>

using namespace std;

ifstream fin ("poligon.in");
ofstream fout ("poligon.out");

struct Point
{
    int x,y;
}a[805],ext;

long long int det(Point a,Point b,Point c)
{
    return a.x*b.y+a.y*c.x+b.x*c.y-c.x*b.y-a.x*c.y-a.y*b.x;
}

int main()
{
    int n,m,nrtot=0;
    fin>>n>>m;
    for (int i=1;i<=n;i++)
    {
        fin>>a[i].x>>a[i].y;
        if (a[i].x<ext.x)
        {
            ext.x=a[i].x;
            ext.y=a[i].y;
        }
    }
    a[n+1]=a[1];
    ext.x-=10;
    for (int v=0;v<m;v++)
    {
        Point inf;
        int nr=0;
        fin>>inf.x>>inf.y;
        for (int i=1;i<=n;i++)
        {
            if (det(inf,a[i],a[i+1])*det(ext,a[i],a[i+1])<0&&det(a[i],inf,ext)*det(a[i+1],inf,ext)<0)
                nr++;
        }
        if (nr%2==1)
            nrtot++;
    }
    fout<<nrtot<<'\n';
    return 0;
}