Score : $100$ points

Problem Statement

Takahashi is wearing white now.

He wears black on the day after he wears white, and he wears white on the day after he wears black.

What color will he wear $N$ days later?

Constraints

• $N$ is an integer.
• $1 \leq N \leq 30$

Input

Input is given from Standard Input in the following format:

$N$

Output

If he will wear white $N$ days later, print White; if he will wear black, print Black.

2

White

Takahashi will wear black one day later and wear white two days later.

5

Black