#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n,i,j,e,k;
	cin>>n;
	j=n-2;
	for(i=1;i<=n-1;i++){
		cout<<" ";
	}
	for(i=1;i<=n;i++){
		cout<<"*";
	}
	printf("\n"); 
	k=n;
	for(i=1;i<=n-1;i++){
		for(e=1;e<=j;e++){
		cout<<" ";
		}
		j--;
		cout<<"*";
		for(e=1;e<=k;e++){
		cout<<" ";
		}
		k+=2;
		cout<<"*";
		printf("\n"); 
	}
	j=1; 
	k=n+(n-3)*2;
	for(i=1;i<=n-2;i++){
		for(e=1;e<=j;e++){
		cout<<" ";
		}
		j++;
		cout<<"*";
		for(e=1;e<=k;e++){
		cout<<" ";
		}
		k-=2;
		cout<<"*";
		printf("\n"); 
	} 
	for(i=1;i<=n-1;i++){
		cout<<" ";
	}
	for(i=1;i<=n;i++){
		cout<<"*";
	}
return 0;
/**************************************************************
	Problem: 1011
	User: zzz
	Language: C++
	Result: Compile Error
****************************************************************/