#include <iostream>
#include <iomanip>

using namespace std;

int main(){
    int n, m;
    cin>>n;
    cin>>m;
    int arr[n][m];
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++){
               arr[i][j] = rand()%10;
            }
    }
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++){
                 cout << setw(4) << arr[i][j];
                }
    cout << endl;
}
    cout << "\n";

    for (int i = 0, j = 0; i < n, j < m; i++, j++){

        int a = arr[i][m -1 - j];
        arr[i][m-1-j] = arr[i][j];
        int b = arr[i][m-1-j];
        arr[i][j] = a;
        if (a == b){
            cout << a<< endl;
    };}


    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++){
                 cout << setw(4) << arr[i][j];
                }
    cout << endl;}
}