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


def main():

	n = raw_input()
	n = n.split(' ')
	n = [int(x) for x in n]
	a = n[0]
	b = n[1]
	t = 0
	d = 0
	l = 0
	r = 0

	for i in range(a):
		x = raw_input()
		if ('B' in x) and t == 0:
			t = i+1
			l = x.index('B') + 1
			r = len(x) - x[::-1].index('B')

	print (t + (r-l)/2), (l+r)/2
	return





if __name__ == "__main__":
	main()