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 (1 ≤ n, m ≤ 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} … 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 ≤ r ≤ n, 1 ≤ c ≤ 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
from sys import stdin, stdout
ti = lambda : stdin.readline().strip()
ma = lambda fxn, ti : map(fxn, ti.split())
ol = lambda arr : stdout.write(' '.join(str(i) for i in arr) + '\n')
os = lambda i : stdout.write(str(i) + '\n')
olws = lambda arr : stdout.write(''.join(str(i) for i in arr) + '\n')



n, m = ma(int, ti())
grid = []
for i in range(n):
	grid.append(ti())


row = None
col = None
colstart = None
colend = None
for i in range(n):
	if 'B' not in grid[i]:
		pass
	else:
		for j in range(m):
			if not colstart:
				if grid[i][j] == 'B':
					colstart = j+1
			else:
				if grid[i][j] == 'W':
					colend = j
					break
		if not colend:
			colend = m
		col = (colstart+colend)/2
		break
# print colstart, colend

rowstart = None
rowend = None
for i in range(n):
	if 'B' not in grid[i]:
		pass
	else:
		rowstart = i+1
		for j in range(i+1, n):
			if grid[j][colstart-1] == 'W':
				rowend = j
				break
		if not rowend:
			rowend = n
		row = (rowstart+rowend)/2
		break
		
print row, col


