#include <stdio.h>
int main(){
    int m, n;
    scanf("%d %d", &m, &n);
    if(m<0 || n<0){
        printf("-1");
    }
    int a[100][100];
    for(int i=0; i<m; i++){
        scanf(" %d", &a[i][j]);
         }
    }
    int top = 0, bottom = m- 1;
    int left = 0, right = n- 1;
    while(top <= bottom && left <= rigth){
        for(int i = left; i <= rigth; i++){
        printf(" %d", a[top][i]);
        top++;
        for(int i = top; i <= bottom; i++)  
        printf(" %d", a[i][right]);
        rigth--;
        if(top <= bottom){
            for(int i = right; i >= left; i--)
            printf(" %d", a[bottom][i]);
            bottom--;
        }
        if(left <= right){
            for(int i = bottom; i = top; i--;)
            printf(" %d", a[i][left]);
            left++;
        }
        
    }
    return 0;
    }