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