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

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