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




	return 0;
}


/**************************************************************
	Problem: 1239
	User: 21A
	Language: C++
	Result: Wrong Answer
****************************************************************/