using System;

public class Program

{

    public static void Main(string[] args)

    {

        int x = 0;

        int y = 1;

        int z;

        for (int a = 0; a <= 50; a++)

        {

        z = x + y;

        Console.WriteLine(z);

        x = y;

        y = z;

        }

    }

}