文件目录

#include <iostream>
using namespace std;
int main()
{
    int n;
    cin >> n;
    for (int i = 1; i <= n; i++)
    {
        for (int j = 1; j <= n; j++)
        {
            if (j == 1 || j == n)
                cout << "|";
            else if (i == n / 2 + 1)
                cout << "-";
            else
                cout << "a";
        }
        cout << endl;
    }
    return 0;
}