Chessboard#10277
Given an 8\times 8 chessboard.
Given the coordinates of a cell, determine its color.
The first line contains two characters: the first is a letter from «A» to «H», and the second is a digit from «1» to «8».
Output «BLACK» if the cell is black; otherwise output «WHITE».
Пример 1
Пример 2
Пример 3