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