// Program 8: Increasing, Decreasing or Bouncy Number

import java.util.*;
class Bouncy {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        boolean rise = true;
        boolean fall = true;
        for (int i = 1; i < s.length(); i++) {
            if (s.charAt(i) < s.charAt(i - 1)) {
                rise = false;
            }
            if (s.charAt(i) > s.charAt(i - 1)) {
                fall = false;
            }
        }
        if (rise) {
            System.out.println("Increasing");
        } else if (fall) {
            System.out.println("Decreasing");
        } else {
            System.out.println("Bouncy");
        }
    }
}