#include <bits/stdc++.h>
using namespace std;
int main() {
    int n, m;
    cin >> n >> m; 
  
    vector<vector<int>> arr(n, vector<int>(m)); 
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < m; ++j) {
            cin >> arr[i][j]; 
        }
    }
  
    for (int i = 1; i < n - 1; ++i) {
        for (int j = 1; j < m - 1; ++j) { 
            if (arr[i][j] > arr[i - 1][j] && arr[i][j] > arr[i + 1][j] && arr[i][j] > arr[i][j - 1] && arr[i][j] > arr[i][j + 1]) {
               
                cout << arr[i][j] << endl;
            }
        }
    }
  
    return 0;
}
/**************************************************************
	Problem: 1384
	User: chenjiahui
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2076 kb
****************************************************************/