#include <vector>
using namespace std;

int main()
{
    int row, col;
    cin >> row >> col;
    vector<vector<int>> a(row, vector<int>(col));
    for(int i = 0; i < row; i++)
    {
        for(int j = 0; j < col; j++)
        {
            cin >> a[i][j];
        }
    }

    int top = 0, bottom = row - 1;
    int left = 0, right = col - 1;

    while(top <= bottom && left <= right)
    {
        // 左→右，上一行
        for(int j = left; j <= right; j++)
        {
            cout << a[top][j] << endl;
        }
        top++;

        // 上→下，右一列
        for(int i = top; i <= bottom; i++)
        {
            cout << a[i][right] << endl;
        }
        right--;

        // 右→左，下一行，要判断还有行
        if(top <= bottom)
        {
            for(int j = right; j >= left; j--)
            {
                cout << a[bottom][j] << endl;
            }
            bottom--;
        }

        // 下→上，左一列，要判断还有列
        if(left <= right)
        {
            for(int i = bottom; i >= top; i--)
            {
                cout << a[i][left] << endl;
            }
            left++;
        }
    }
    return 0;
}

#include<iostream>
using namespace std;
int main(){
	for(long long i=0;i<=514514;i++){
		cout<<"1111111111111111111111111111111111111111111111111";
	}
	return 0;
}

又有人卡bug