Heavy Rotation

Source: AtCoder

Problem Statement

Takahashi is wearing white now, and the color alternates between white and black every day. Determine the color after $N$ days.

Input

One line contains the integer $N$.

Output

Print White if the color after $N$ days is white; otherwise print Black.

Subtasks

• Subtask 1 (100%): $1 \le N \le 30$

Examples

Example 1

Input

2

Output

White

Explanation

For the sample values 2, evaluating the conditions in the statement gives White. Therefore the program prints the shown output.

Example 2

Input

5

Output

Black

Explanation

For the sample values 5, evaluating the conditions in the statement gives Black. Therefore the program prints the shown output.