// editor2
#include <stdio.h>
int main(){
    int m,n;
    scanf("%d %d",&m,&n);
    if(m<0 || n<0){
        printf("-1");
        return 0;
    }
    int matrix[m][n];
    for(int i=0;i<m;i++){
        for(int j=0;i<n;j++){
            scanf("%d ",&matrix[i][j]);
        }
    }
    int top=0,bottom = m-1;
    int left = 0,right = n-1;
    while(top<=bottom && left <= right){
        for(int i=left;i<=right;i++)
            printf("%d ",matrix[i][right]);
            top++;
        
        for(int i=top; i<=bottom; i++)
            printf("%d ",matrix[i][right]);
            right--;
        
        if(top<=bottom){
            for(int i=right; i>=left;i--){
                printf("%d ",matrix[bottom][i]);
                bottom--;
            }
        }
        if(left<=right){
            for(int i=bottom; i>=top;i)
        }
    }
    return 0;
}