#include<bits/stdc++.h>
using namespace std;
#define lalala ios_base::sync_with_stdio(false);cin.tie(NULL);
//#define endl "\n"
#define ll long long
#define pb push_back
#define N 1000005
ll int arr[N],dolu[N],dp[N],centr[N];
int n,m,k;
ll int hmm(int ama){
if(ama>k)return 0;
ll int a=-1000000000000;
int orta=centr[ama];
if(orta-m>0&&dolu[orta-m]==0){
int xxx=arr[orta-m];
if((orta-1)%m&&orta%m&&dolu[orta-1]+dolu[orta+1]==0){
dolu[orta-m]=dolu[orta-1]=dolu[orta+1]=1;
a=max(a,hmm(ama+1)+arr[orta-1]+xxx+arr[orta+1]);
dolu[orta-m]=dolu[orta-1]=dolu[orta+1]=0;
}
if((orta-1)%m&&orta+m<=n*m&&dolu[orta-1]+dolu[orta+m]==0){
dolu[orta-m]=dolu[orta-1]=dolu[orta+m]=1;
a=max(a,hmm(ama+1)+xxx+arr[orta-1]+arr[orta+m]);
dolu[orta-m]=dolu[orta-1]=dolu[orta+m]=0;
}
if(orta%m&&orta+m<=n*m&&dolu[orta+1]+dolu[orta+m]==0){
dolu[orta-m]=dolu[orta+1]=dolu[orta+m]=1;
a=max(a,hmm(ama+1)+xxx+arr[orta+1]+arr[orta+m]);
dolu[orta-m]=dolu[orta+1]=dolu[orta+m]=0;
}
}
if(orta%m&&(orta-1)%m&&orta+m<=n*m&&dolu[orta+1]+dolu[orta-1]+dolu[orta+m]==0){
dolu[orta+m]=dolu[orta-1]=dolu[orta+1]=1;
a=max(a,hmm(ama+1)+arr[orta-1]+arr[orta+m]+arr[orta+1]);
dolu[orta+m]=dolu[orta-1]=dolu[orta+1]=0;
}
//cout<<orta<<" "<<a<<endl;
return a;
}
int main(){
lalala;
memset(dp,-1,sizeof(dp));
cin>>n>>m;
ll int cev=0;
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
int x;cin>>x;
arr[(i*m)+j]=x;
dp[(i*m)+j]=-1;
}
}
cin>>k;
for(int i=1;i<=k;i++){
int x,y;cin>>x>>y;
x++;y++;
centr[i]=(x*m)+y;
dolu[(x*m)+y]=1;
cev+=arr[(x*m)+y];
}
ll int x=hmm(1);
if(x>=0)cout<<x+cev<<endl;
else cout<<"No"<<endl;
}
