#include <fstream>
using namespace std;

struct trap{int x,y;} vx[1<<21],vy[1<<21];
int n,m;

ifstream in("zc.in");
ofstream out("zc.out");

inline void add(int v[],int x,int y)
{
	v[++m]=

int main()
{
	int rez=0,x,i;
	char c;
	in>>n>>m;
	for (i=1;i<=n;i++)
	{
		in>>x>>y;
		add(vx,x,y);
	}
	sort(v+1,v+n+1,cmp);
	in>>poz.x>>poz.y;
	while (m--)
	{
		in>>c>>x;
		update(poz,c,x);
	}
	out<<rez<<"\n";
	return 0;
}