import java.util.Scanner;

public class Komentotulkki {
        public static Scanner lukija = new Scanner(System.in);

        public static void main(String[] args) {
                System.out.println("Komennot:\n");
                System.out.println("fibo   Fibonaccin luvut");
                System.out.println("kerto  10:n kertotaulu");
                System.out.println("pii    piin likiarvo");
                System.out.println();
                String komento = lueKomento();
                while (komento.equals("fibo") ? fibo() :
                      (komento.equals("kerto") ? kerto() :
                      (komento.equals("pii") ? pii() : virhe()))) {
                        komento = lueKomento();
                }
        }

        public static String lueKomento() {
                System.out.print("> ");
                return lukija.nextLine();
        }

        public static boolean fibo() {
                int a = 0, b = 1, c;
                System.out.println(a);
                System.out.println(b);
                for (int i = 0; i < 8; i++) {
                        c = a; a = b; b = b + c;
                        System.out.println(b);
                }
                return true;
        }

        public static boolean kerto() {
                for (int i = 1; i <= 10; i++) {
                        for (int j = 1; j <= 10; j++) {
                                int k = i * j;
                                if (k < 10) System.out.print(" ");
                                if (k < 100) System.out.print(" ");
                                System.out.print(" " + k);
                        }
                        System.out.println();
                }
                return true;
        }

        public static boolean pii() {
                System.out.println(Math.PI);
                return true;
        }

        public static boolean virhe() {
                return false;
        }
}