#include<stdio.h>
int main()
{
    int n,m,f=0;
    scanf("%d %d", &n,&m);
    int arr[n][m], rarr[n][m];
    for(int i=0;i<n;i++){
        for( int j=0;j<m;j++){
            scanf("%d", &arr[i][j]);
            // Reversed row
            rarr[i][m-j-1]=arr[i][j];
        }
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<m;j++){
            if(arr[i][j]!=rarr[i][j]){
                f=1;     // Not a palindrome
                break;
            }
        }   
        if(f==0){
            for(int j=0;j<m;j++){
                // Print the row if it's a palindrome
                printf("%d ", arr[i][j]);
            }
            printf("\n");
        }
        f=0;// Reset palindrome flag
    }
 
}

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MyA1CjEgMiAzIDIgMQoxIDIgMyA0IDUgCjEgMCAwIDAgMQ==

3 5
1 2 3 2 1
1 2 3 4 5 
1 0 0 0 1