#include<bits/stdc++.h> using namespace std; int main() { int a,b,d,e; cin>>a>>b>>d>>e; int c[a+2][b+2]; for(int aa=0;aa<=a+1;aa++) { for(int bb=0;bb<=b+1;bb++) { c[aa][bb]=0; } } for(int aa=1;aa<=a;aa++) { for(int bb=1;bb<=b;bb++) { cin>>c[aa][bb]; } } cout<<c[d][e]+c[d][e+1]+c[d][e+2]+c[d+1][e]+c[d+1][e+2]+c[d+2][e]+c[d+2][e+1]+c[d+2][e+2]; return 0; }