#include<bits/stdc++.h>
using namespace std;
int f[100][100],za[100][100],book[100][100]={0};
int n,m,t,a,b,sum;
int sx,sy,fx,fy;
int vx[5]={0,1,0,-1,0};
int vy[5]={0,0,1,0,-1};
int dfs(int k,int h){
	if(k==fx&&h==fy){
	sum++;
	}
	if(book[k][h]==0&&za[k][h]==0&&k>=1&&k<=n&&h>=1&&h<=m)
	for(int i=1;i<=4;i++){
		book[k][h]=1;
		int tx,ty;
		tx=k+vx[i];
		ty=h+vy[i];
		dfs(tx,ty);
		book[k][h]=0;
	}
}
int main(){
	cin>>n>>m>>t;
	cin>>sx>>sy>>fx>>fy;
	for(int i=1;i<=t;i++){
	cin>>a>>b;
	za[a][b]=1;
	}
	book[fx][fy]=1;
	dfs(sx,sy);
	cout<<sum;
}