#include<iostream>
#include<cmath>
using namespace std;

int map[6][6] = { 0 }, T, sx, sy, fx, fy, n, m, ans = 0;
int dx[4] = { 1,-1,0,0 };
int dy[4] = { 0,0,1,-1 };
int hx[6][6] = { 0 };

void DFS(int x, int y)
{
	if (map[x][y] == -1 || hx[x][y] == 1 || map[x][y] == 0)return;
	if (x == fx && y == fy)
	{
		ans++;
		return;
	}
	hx[x][y] = 1;
	for (int i = 0; i < 4; i++)
	{
		DFS(x + dx[i], y + dy[i]);
		hx[x + dx[i]][y + dy[i]] = 0;
	}
	return;
}

int main()
{
	int x, y;
	cin >> n >> m >> T;
	cin >> sx >> sy >> fx >> fy;
	for (int i = 1; i <= n; i++)
	{
		for (int j = 1; j <= m; j++)
		{
			map[i][j] = 1;
		}
	}
	while (T--)
	{
		cin >> x >> y;
		map[x][y] = -1;
	}
	DFS(sx, sy);
	cout << ans << endl;
	return 0;
}