백준 2438번

import java.util.Scanner;


public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        sc.close();
        for(int i = 1; i <= a; i++){
            for(int j = 1; j<=i; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}