In their free time, Santa Claus Petrovich and Santa Claus Egorych play the following game. Pawns are arranged on a board 3×3 in the following way:
Pawns move and attack according to the standard chess rules, and there is one additional rule: it is obligatory to attack. The one who cannot make a move loses. White moves first. For the last 100 years, Petrovich have been playing white and
he always won. Once Egorych became tired of this and brought a board 3×5. But he again was losing constantly playing black. "What's the matter", he thought and decided to buy a board
And here Petrovich has to think which color to play in order to win. Help him to decide.
The integer N (1 ≤ N ≤ 109).
"White" if Petrovich should play white, and "Black" if he should play black. Egorych and Petrovich always make moves according to their
Problem Author: Alexander Toropov
Problem Source: Ural SU Contest. Petrozavodsk Winter Session, January 2006