public class Fibonacci {

	public static void main (String args[]) {

		//Fibonacciho sekvence - posloupnost. Kazde cislo je souctem dvou predchozich.

		double k =0;
		double a = 1;
		double b = 1;
		while (k <= 20)
		{
			k = a + b;
			System.out.print(k + " ");
			a=b;
			b=k;
		}
	}
}