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


/**************************************************************
	Problem: 1071
	User: chensijia
	Language: C++
	Result: Output Limit Exceed
****************************************************************/