using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("By Erick de la Rosa");

        int x = 0;

        while (x < 30)

        {

            double r = (double)(x) * Math.Sin(x) + x + 2;

            for (int i = 0; i < r; i++)

            {

                Console.Write("=");

            }

            Console.WriteLine("");

            x++;

        }

    }

}