#include <cstdio>
#include <vector>
#include <algorithm>
using namespace std;
FILE *f=fopen("poligon.in","r");
FILE *g=fopen("poligon.out","w");
vector<int> V[60005];
struct punct{
    int x,y;
    punct()
    {
        x=y=0;
    }
    punct(int a,int b)
    {
        x=a;
        y=b;
    }
};
struct dreapta
{
    int a,b;
    long long c;
    dreapta()
    {
        ;
    }
    dreapta(punct A,punct B)
    {
        a=B.y-A.y;
        b=A.x-B.x;
        c=1LL*B.x*A.y-1LL*A.x*B.y;
    }
};
punct P[60005];
dreapta tmp;
int N,M;
int main()
{
    fscanf(f,"%d %d",&N,&M);
    for(int i=1;i<=N;i++)
    {
        fscanf(f,"%d%d",&P[i].x,&P[i].y);
    }
    for(int i=1;i<=N;i++)
    {
        tmp=dreapta(P[i],P[(i==N ? 1:i+1)]);
        if(tmp.a==0) continue;
        int st=min(P[i].y,P[(i==N ? 1:i+1)].y),dr=max(P[i].y,P[(i==N ? 1:i+1)].y);
        for(int y=st+1;y<=dr;y++)
        {
            V[y].push_back(-(1LL*tmp.b*y+tmp.c)/tmp.a);
        }
    }
    for(int y=0;y<=60000;y++) sort(V[y].begin(),V[y].end());
    int nr=0;
    for(int i=1;i<=M;i++)
    {
        punct tmp;
        fscanf(f,"%d %d",&tmp.x,&tmp.y);
        nr+=((lower_bound(V[tmp.y].begin(),V[tmp.y].end(),tmp.x)-V[tmp.y].begin())%2==1||(upper_bound(V[tmp.y].begin(),V[tmp.y].end(),tmp.x)-V[tmp.y].begin())%2==1);
    }
    fprintf(g,"%d",nr);
    fclose(f);
    fclose(g);
    return 0;
}