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- #include <bits/stdc++.h>
- #include <iostream>
- using namespace std;
- int main ()
- {
- int n,m;
- cin >> n >> m;
- char grid [n+2][m+2];
- for (int i=0;i<n+2; i++){
- for (int j=0;j<m+2 ;j++){
- grid[i][j]= 'x';
- }
- }
- for (int i=1 ;i<=n ;i++){
- for (int j =1 ;j<=m ;j++){
- cin >> grid[i][j];
- }
- }
- int i,j;
- cin>>i>>j;
- if (grid[i-1][j-1]=='x' and grid [i-1][j] =='x' and grid [i-1][j+1]=='x' and
- grid[i][j-1]=='x' and grid [i][j+1] =='x' and grid [i+1][j-1]=='x' and
- grid[i+1][j]=='x' and grid [i+1][j+1] =='x' )
- {
- cout << "yes\n";
- }
- else
- {
- cout <<"no\n";
- }
- return 0;
- }
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