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

/**************************************************************
	Problem: 1239
	User: ljl2
	Language: C++
	Result: Wrong Answer
****************************************************************/