#include<bits/stdc++.h>
using namespace std;
int n;
int main(){
cin>>n;
    for(int i=1;i<=n;i++){
    	for(int j=1;j<=n+1-i;j++) cout<<" ";
    	for(int j=1;j<=2*i-1;j++) cout<<"*";
    	cout<<endl;
    }
	for(int i=n+1;i>=1;i--){
    	for(int j=1;j<=n+1-i;j++) cout<<" ";
    	for(int j=1;j<=2*i-1;j++) cout<<"*";
    	cout<<endl;
	}
 
}
/**************************************************************
	Problem: 1071
	User: lidongbo
	Language: C++
	Result: Accepted
	Time:17 ms
	Memory:2072 kb
****************************************************************/