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

/**************************************************************
	Problem: 1011
	User: fuyijun
	Language: C
	Result: Compile Error
****************************************************************/