using System;

public class Program

{

    public static void Main()

    {

        int a = 0, b = 1, c = 0;  

    Console.WriteLine(b); 

    for (int i = 0; i < 19; i++)  

    {  

        c= a + b;  

        Console.WriteLine(c);  

        //Console.WriteLine();  

        a= b;  

        b= c;  

    }  

}  

    }

​