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