#include<bits/stdc++.h>
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==1||i==n)
			{
				cout<<"-";
			}
			else if(i==(n+1)/2&&j!=(n+1)/2)
			{
				cout<<"-";
			}
			else if(i!=(n+1)/2&&j==(n+1)/2)
            {
				cout<<"|";	
			}
			else
			{
				cout<<"x";
			}
		}
		cout<<endl;
	}
	return 0; 
}