#include<bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; for(int i=0;i<n;i++){ for(int j=0;j<n;j++){

	if(i+1==(n+1)/2){
		if(j==0||j==n-1){ 
			cout<<"|";
		}else{
			cout<<"-";
			}
	}else{
		if(j==0||j==n-1){
	
			cout<<"|";
		}
	else{
		cout<<"a";
		}	
	
	}

} cout<<endl; }

return 0;

} //ac

c++