#include <cstdlib>
#include <iostream>
#include <windows.h>
#include <cstdio>


using namespace std;



int main()
{

  int n;
  cout<<"Podaj poziom choinki:";
  cin>>n;
  cout<<endl;

  for (int i=1;i<n;i++)
  {
      for (int x=1; x<=n-i;x++)
        {
            cout<<" ";
            }
            for (int y=1;y<=2*i-1;y++)
            {
                cout<<"x";
                Sleep(0200);
            }
cout<<endl;
      }

      cout<<endl;
      return 0;
}