using System;

public class Program

{

    public static void Main()

    {

        Print(5);

    }

    public static void Print(int size)

    {       

        if(size < 0)

        {

            throw new ArgumentException("size not be less 0");

        }

        string line = string.Empty;

        for(var i =0; i < size; i++){

            line += "*";

            Console.WriteLine(line);

        }

    }

}