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





for(int i=n-1;i>=1;i--){
	for(j=1;j<=n-i;j++){
		cout<<" ";
		
	}
	for(j=1;j<=2*i-1;j++){
		cout<<"*";
	}
				cout<<endl;
	
	
} 
	return 0;
}

/**************************************************************
	Problem: 1071
	User: linweilun
	Language: C++
	Result: Wrong Answer
****************************************************************/