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, input().split())
arr = []

# n, m = 5, 6
# arr = [
# 	"WWWWWW",
# 	"WWWBBB",
# 	"WWWBBB",
# 	"WWWBBB",
# 	"WWWWWW",
# ]
for i in range(n):
	arr.append(input())

count = 0
start = False

#WWBBBW
#WWBbBW
#WWBBBW
#WWWWWW
#WWWWWW
k = 0
r_index = 0
c_index = 0
for i in arr:
	s_index = i.find("B")
	f_index = i.rfind("B")
	k+=1
	if s_index == -1:
		continue
	else:
		r_index = (s_index + f_index) // 2 + 1
		c_index = k - count // 2
		count+=1

print(c_index, r_index)
