#include <iostream>
using namespace std;

int main(){
    int i,j,n;
    cin>>n;
    for(i = 1;i <= n;i++){
    	for(j = 1;j <= n - i;j++){
    		cout<<" ";
		}
		
		for(j = 1;j <= 2 * i - 1;j++){
			if(i == 1){
				cout<<"*";
			}else if(i == n){
				cout<<"*";	
			}else{
				if(j != 1 && j != 2 * i - 1){
					cout<<" ";
				}else{
					cout<<"*";
				}
			}
			
		}
		
		cout<<endl;
	}
}

/**************************************************************
	Problem: 1225
	User: admin
	Language: C++
	Result: Accepted
	Time:5 ms
	Memory:2072 kb
****************************************************************/