#include <iostream>
using namespace std;

int main() { int n ;
cin >> n ;
for (int i = 0 ; i < n ; i ++){
	int space = i ; 
	if ( i>n/2) space = n-i-1;
	for (int j = 0 ; j < space; j++) cout << " " ; 
	for ( int j = 0; j < n-2*space ; j++) cout << "x" ;
	
	 cout << endl ;	
	} 
}