import java.util.*;

public class spiralMatrix {

public static void main(String args[]) {

Scanner s = new Scanner(System.in);

int n = s.nextInt();

int m = s.nextInt();

int[][] arr = new int[n][m];

for (int i = 0; i < n; i++)

for (int j = 0; j < m; j++)

arr[i][j] = s.nextInt();

spiral(arr, n, m);

}

static void spiral(int[][] arr, int n, int m) {

int top=0;

int left=0;

int right=arr[0].length-1;

int bottom=arr.length-1;

while(left<=right)

{

for(int i=left;i<=right;i++)

{

System.out.print(arr[top][i]+" ");

}

top++;

if(top>bottom)

{

break;

}

for(int i=top;i<=bottom;i++)

{

System.out.print(arr[i][right]+" ");

}

right--;

for(int i=right;i>=left;i--)

{

System.out.print(arr[bottom][i]+" ");

}

bottom--;

if(top>bottom)

{

break;

}

for(int i=bottom;i>=top;i--)

{

System.out.print(arr[i][left]+" ");

}

left++;

}

}

}