using System;

public class Program {

    // write a method that will calculate the nth number in the Fibonacci sequence

    // The first two numbers of fibonacci series are 0 and 1 while the remaining numbers are the sum of the previous 2

    // 0, 1, 1, 2, 3.....

    public static void Main() {

        Console.WriteLine(CalculateFibonacci(11));

    }

    private static int CalculateFibonacci(int n) {

        // write your code here

    }

}