public class Fib_while 
{
    public static void main(String args[])
    {
        final int MAX = 20;
        int i=0,j=1,k=0;
        while (k<MAX)
        {
            System.out.print(" "+i+" "+j);
            i = i + j;
            j = i + j;
            k = k + 2;
        }
        System.out.println();
    }
}