#include <iostream>
#include <vector>
using namespace std;
 
int main() {
    int rows, cols;
    cin >> rows >> cols;
 
    // Input the 2D array
    vector<vector<int>> arr(rows, vector<int>(cols));
    for(int i = 0; i < rows; i++) {
        for(int j = 0; j < cols; j++) {
            cin >> arr[i][j];
        }
    }
 
    // Print border elements
    cout << "Border elements:" << endl;
    for(int i = 0; i < rows; i++) {
        for(int j = 0; j < cols; j++) {
            if(i == 0 || j == 0 || i == rows - 1 || j == cols - 1) {
                cout << arr[i][j] << " ";
            } else {
                cout << "  "; 
            }
        }
        cout << endl;
    }
 
    return 0;
}
 

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1 2 3 
4 5 6
7 8 9