import java.util.*;
import java.lang.*;
import java.io.*;

// The main method must be in a class named "Main".
class Main {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        for(int i=0;i<2*n;i++){
            if(i<n){
                for(int j=0;j<=i;j++){
                    System.out.print("*");
                }
            }else{
                 for(int j=0;j<2*n-i-1;j++){
                    System.out.print("*");
                }
            }
            System.out.println();
        }
    }
}