#include <iostream>
#include <fstream>
#include <iomanip>
#define NMAX 60001

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

struct Point
{
    int x,y;
} v[NMAX],a[NMAX];
long double Aria,auxAria,copie;
int N,M,Nrpoints;
void Read()
{
    fin>>N>>M;
    for(int i =1 ; i <= N; i++)
    {
        fin>>v[i].x>>v[i].y;
    }
    v[N+1]=v[1];
    for(int i =1 ; i <= M; i++)
    {
        fin>>a[i].x>>a[i].y;
    }

}
inline long double determinant1(const Point &firstPoint, const Point &secondPoint)
{
    return firstPoint.x * secondPoint.y - secondPoint.x*firstPoint.y;
}
void AreaPoligon()
{
    for(int i = 1; i <= N; i ++)
    {
        Aria+=determinant1(v[i],v[i+1]);
    }
}
inline long double determinant2(const Point &auxPoint,const Point &firstPoint, const Point &seconPoint)
{
    int a,b,c,d,e,f;
    a=auxPoint.x;
    b=auxPoint.y;
    c=firstPoint.x;
    d=firstPoint.y;
    e=seconPoint.x;
    f=seconPoint.y;
    return a*d + e*b + c*f - e*d - a*f-c*b  ;
}
int AreaPoligonAux(Point auxPoint)
{
    for(int i =1 ; i <= N; i++)
    {
        auxAria+=determinant2(auxPoint,v[i],v[i+1]);
    }
    return auxAria/2;
}
void Apart()
{
    for(int i =1 ; i <= M; i++)
    {
        auxAria=0;
        copie=AreaPoligonAux(a[i]);
        if(copie==Aria/2)
            Nrpoints++;
    }

}
int main()
{
    Read();
    AreaPoligon();
    Apart();
    fout<<Nrpoints;


    return 0;
}