#include <stdio.h>
#define nmax 810
using namespace std;
struct date { long long int x,y; };
int j,n,m,i,nr;
long long int sol,curent;
date t[nmax],x;
inline int abss(int x) { if (x<0) return (-x); else return x; }
long long int tarie(date a,date b,date c)
{
    return abss(a.x*b.y-a.y*b.x+b.x*c.y-b.y*c.x+c.x*a.y-c.y*a.x)/2;
}
int main() {
freopen("poligon.in","r",stdin);
freopen("poligon.out","w",stdout);
scanf("%d %d",&n,&m);
for (i=1;i<=n;i++) scanf("%lld %lld",&t[i].x,&t[i].y);
t[n+1]=t[1];
for (i=1;i<=n;i++)
    sol=sol+(t[i].x*t[i+1].y)-(t[i+1].x*t[i].y);
sol=abss(sol)/2;
for (i=1;i<=m;i++) {
    scanf("%lld %lld",&x.x,&x.y); curent=0;
    for (j=1;j<=n;j++)
        curent+=tarie(x,t[j],t[j+1]);
    if (curent==sol) nr++;
}
printf("%d",nr);
return 0;
}