#include<iostream>
using namespace std;
int A[110][110];
int main(){
	int n,m;
	cin >> n >> m;
	for (int i = 0; i < n; i ++){
		for (int j = 0; j < m; j ++){
			cin >> A[i][j]; 
		}
	}
	int a, b, c, d;
	a = 0, b = 0, c = n - 1, d = m - 1;
	while(a <= c && b <= d){
		for (int i = b; i <= d; i ++){
			cout << A[a][i] << " ";
		}
		for (int i = a + 1; i <= c; i ++){
			cout << A[i][d] << " ";
		}
		if(a == c || b == d) break;
		for (int i = d-1; i >= b; i --){
			cout << A[c][i] << " ";
		}
		for (int i = c - 1; i >= a + 1; i --){
			cout << A[i][b] << " ";
		}
		a++, b++, c--, d--;
	}
	return 0;
}