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