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 = [int(x) for x in input().split()]
s = []
for i in range(n):
	x = list(input())
	#print(x)
	try:
		a = x.index('B')
		#print(a)
		cc = a
		c = x[a]
		count=0
		while c=='B' and a<m-1:
			count += 1
			c = x[a+1]
			a = a + 1
		s.append((i,cc,count))
	except:
		continue
#print(s)
aa = s[len(s)-1]
x = aa[0]
y = aa[2]
start = aa[1]

print(int((x-s[0][0])/2)+s[0][0]+1,start+int(y/2)+1)