Bob is trying to live-stream a video in his ICS class! He's learned that colours are represented by a triple ~(R, G, B)~, where ~R~ is the intensity of red, ~G~ is the intensity of green, and ~B~ is the intensity of blue. He knows that humans don't perceive the higher end of the spectrum well, so the data can be compressed into ~(\lfloor\sqrt R\rfloor, \lfloor\sqrt G\rfloor, \lfloor\sqrt B\rfloor)~, where ~\lfloor x \rfloor~ is the largest integer less than or equal to ~x~, to save space while transmitting.

However, this means that sometimes two different colours will, after applying the compression, become the same colour! For example, the colours ~(2, 2, 2)~ and ~(3, 3, 3)~ will both become ~(1, 1, 1)~ after compression.

Thus Bob asks you: will the given two colours become the same colour after compression?

Input Specification

The first line of input will contain 3 integers, ~R_1, G_1, B_1~, the RGB values of the first colour.
The second line of input will contain 3 integers, ~R_2, G_2, B_2~, the RGB values of the second colour.

All integers in the input are in the range ~[0, 10^9]~.

Output Specification

Output Colourful if the two colours become different colours following the compression algorithm, or Dull otherwise.

Sample Input 1

1 100 20
1 4 21

Sample Output 1

Colourful

Sample Input 2

1 1 1
1 1 1

Sample Output 2

Dull