#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,m,a[200][200];
    cin>>n>>m;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            cin>>a[i][j];
        }
    }
    for(int i=2;i<=n-1;i++){
        for(int j=2;j<=m-1;j++){
        if(a[i][j]>a[i-1][j]&&a[i][j]>a[i+1][j]&&a[i][j]>a[i][j-1]&&a[i][j]>a[i][j+1])
        cout<<a[i][j]<<endl;
        }
}
    return 0;
}
/**************************************************************
	Problem: 1384
	User: lidongbo
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2104 kb
****************************************************************/