CF1028A Find Square

Consider a table of size $ n \times m $ , initially fully white. Rows are numbered $ 1 $ through $ n $ from top to bottom, columns $ 1 $ through $ m $ from left to right. Some square inside the table with odd side length was painted black. Find the center of this square.

The first line contains two integers $ n $ and $ m $ ( $ 1 \le n, m \le 115 $ ) — the number of rows and the number of columns in the table. The $ i $ -th of the next $ n $ lines contains a string of $ m $ characters $ s_{i1} s_{i2} \ldots s_{im} $ ( $ s_{ij} $ is 'W' for white cells and 'B' for black cells), describing the $ i $ -th row of the table.

Output two integers $ r $ and $ c $ ( $ 1 \le r \le n $ , $ 1 \le c \le m $ ) separated by a space — the row and column numbers of the center of the black square.