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