#include <iostream>
#include <iomanip>
using namespace std;
int main() {
    int a[200][200],n=0,m=0,i=0,j=0;
    cin>>n>>m;
    for(i=0;i<n;i++){
    	for(j=0;j<m;j++){
    		cin>>a[i][j];
    	}
    }
    for(i=1;i<n-1;i++){
    	for(j=1;j<m-1;j++){
    		if(a[i][j]>a[i-1][j]&&a[i][j]>a[i][j-1]&&a[i][j]>a[i][j+1]&&a[i][j]>a[i+1][j]){
    				cout<<a[i][j]<<endl;
    			}
    			}
}
 	
    return 0;
}
/**************************************************************
	Problem: 1384
	User: panyuchen
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2104 kb
****************************************************************/