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A. Find Square
time limit per test
1 second
memory limit per test
256 megabytes
input
standard input
output
standard output

Consider a table of size n×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 (1n,m115) — 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 si1si2sim (sij 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 (1rn, 1cm) 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