#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

#define x first
#define y second

pair <ll, ll> a[810], p;
ll n, m, area, check, ans;

ll det(int i){
    return abs(a[i].x*a[i+1].y + a[i+1].x*p.y + p.x*a[i].y - a[i+1].y*p.x - p.y*a[i].x - a[i].y*a[i+1].x);
}

int main(){
    ifstream cin ("poligon.in");
    ofstream cout ("poligon.out");
    cin >> n >> m;
    for (int i=1; i<=n; i++) cin >> a[i].x >> a[i].y;
    a[n+1] = a[1];
    for (int i=1; i<=n; i++) area += a[i].x*a[i+1].y - a[i].y*a[i+1].x;
    area = abs(area);
    while (m--){
        check = 0;
        cin >> p.x >> p.y;
        for (int i=1; i<=n; i++) check += det(i);
        if (check == area) ans++;
    }
    cout << ans << "\n";
    return 0;
}