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
n,m= map(int,raw_input().split())
for _ in xrange(n):
	a1 = raw_input()
	a = set(a1)
	if 'B' in a:
		b1 = 0
		b2 = 0
		for i in xrange(m):
			if a1[i]=='B':
				b1 = i
				break
		for i in xrange(m-1,-1,-1):
			if a1[i]=='B':
				b2 = i
				break
		r = (b2-b1)/2
		print _+r+1,b1+r+1
		exit(0)
