#include<bits/stdc++.h>
using namespace std;

int main(){
	int a;
	cin >> a;
	int mid=a/2;
	for(int i=0; i<a; ++i){
		cout << "|";
		for(int j=0; j<a; ++j){
			if(i==mid){
				cout << "-";
			}
			else{
				cout << "a";
			}
		}
		if(i!=a-1) cout << "|\n";
        else cout << "|";
	}
	return 0;
}