#include<bits/stdc++.h>
using namespace std;
int main()
{
  int i,n,j,y,z;
  cin>>n;
  for(i=1;i<=n;i++){
  for(j=1;j<=n-i;j++) cout<<" ";
  for(j=1;j<=2*i-1;j++){
  if(i==n) cout<<"*";  
  else if(j==1||j==2*i-1) cout<<"*";
  else cout<<" ";
  }
  cout<<endl;}
return 0;
}

/**************************************************************
	Problem: 1011
	User: wtq001
	Language: C++
	Result: Wrong Answer
****************************************************************/