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 j in xrange(n):
	l=raw_input()
	b,d=0,0
	a=0 
	for i in xrange(m-1):
		if l[0]=='B':
			b=1
			a=j+1
		if l[m-1]=='B':
			d=m
			a=j+1
		if (l[i]=='W' and l[i+1]=='B'):
			b=i+2
			a=j+1	
		if (l[i]=='B' and l[i+1]=='W'):
			d=i+1
			a=j+1
	if m==1 and l[m-1]=='B':
		b=d=1
		a=j+1
	if a!=0:	
		if b==0 or d==0:
			b=d
		print a+(d-b)/2,(b+d)/2
		break