#include <iostream>
using namespace std;
int main ()
{
    int n, mt[100][100];
    cin >> n;
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= n; j++)
            cin >> mt[i][j]; // citim matricea
    int x = 1, l = n; // initializam x, y captul spiralei si lunngimea
    for (int i = 1; i < n; i++)
    {
        cout << mt[x][x] << " ";
        for (int j = x + 1; j <= l; j++)
            cout << mt[x][j] << " "; // orizontala sus
        for (int j = x + 1; j <= l; j++)
            cout << mt[j][l] << " "; // verticala dreapta
        for (int j = l - 1; j >= x; j--)
            cout << mt[l][j] << " "; // orizontala jos
        for (int j = l - 1; j > x; j--)
            cout << mt[j][x] << " "; // verticala stanga
        l--;
        x++;
    }
    return 0;
}