Black or White

Imagine an infinite chess board. The cell on the bottom-left most corner is labelled $(0, 0)$. The cell on the right of it is labelled $(1, 0)$. The cell above $(0, 0)$ is labelled $(0, 1)$.

The colors of the cells alternate such that no two adjacent cells share the same color. The cell is colored either blank or white. The bottom-left most cell is black.

Given the label of a cell, you have to determine whether whether it is black or white.

Input

The input will contain two integers $A$ ($0 \le A \le 10^{10000000}$) and $B$ ($0 \le B \le 10^{10000000}$) representing the cell labelled $(A, B)$.

Output

If the cell $(A, B)$ is colored black, print “Black”. If it is colored white, print “White”.

Sample

Input	Output
1 1	Black