test.java

import java.util.Scanner;

public class Main {
 
    public static void main(String[] args){
    	Scanner sc=new Scanner(System.in);
    	int a = sc.nextInt();
    	String b="*";
    	int cnt= 0;
    	for(int i=0; i<a; i++) {
    		
    		cnt++;
    		for(int j=0; j<cnt; j++) {
    			System.out.print(b);
    		}
    		System.out.println();
    	}
    }
}