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A. Find Square

time limit per test

1 secondmemory limit per test

256 megabytesinput

standard inputoutput

standard outputConsider 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.

Input

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

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.

Examples

Input

5 6

WWBBBW

WWBBBW

WWBBBW

WWWWWW

WWWWWW

Output

2 4

Input

3 3

WWW

BWW

WWW

Output

2 1

Codeforces (c) Copyright 2010-2020 Mike Mirzayanov

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