#include<bits/stdc++.h>
using namespace std;

int main()
{
	int number;
	cin>>number;
	for(int i=1;i<=number;i+=2)
	{
		for(int j=1;j<=(number-i)/2;j++)
		{
			cout<<" "; 
		}
		for(int k=1;k<=i;k++)
		{
			cout<<"*";
		}
		cout<<"\n";
	}
	for(int i=number-2;i>=1;i-=2)
	{
		for(int j=1;j<=(number-i)/2;j++)
		{
			cout<<" "; 
		}
		for(int k=1;k<=i;k++)
		{
			cout<<"*";
		}
		cout<<"\n";
	}
	return 0;
}