<script>

#include<iostream>
using namespace std;
bool vis[41][41];
int dx[4]{-1,1,0,0},dy[4]{0,0,-1,1};
int n,m,sx,sy,fx,fy,t,__x,__y;
long long s{};
void dfs(int x,int y){
    if(x<1||x>n||y<1||y>m||vis[x][y]){return ;}
    if(x == fx && fy == y){
        s++;
        return;
    }
    for(int i{0};i < 4;i++){
        vis[x][y] = 1;
        dfs(x+dx[i],y+dy[i]);
        vis[x][y] = 0;
    }
}
int main(){
    cin >> n >> m >> t;
    cin >> sx >> sy >> fx >> fy;
    while(t--){
        cin >> __x >> __y;
        vis[__x][__y]=1;
    }
    dfs(sx,sy);
    cout << s;
    return 0;
}