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