#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 ;
}
}
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