#include <iostream>
using namespace std;
int main()
{
  int n;
  cout<<"enter the n: ";
  cin>>n;
  int up=(n+1)/2;
  for(int i=up;i>=1;i--)
  {
      int spaces=2*(up-i);
      for(int j=1;j<=spaces;j++)
      {
          cout<<" ";
      }
      int chars=2*(i-1)+1;
      for(int k=1;k<=chars;k++)
      {
          cout<<"* ";
      }
      cout<<endl;
  }
  for(int i=2;i<=up;i++)
  {
      int spaces=2*(up-i);
      for(int j=1;j<=spaces;j++)
      {
          cout<<" ";

      }