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
z = []
t = 0
flag = 0
r = 0
x,y = map(int,input().split())
for i in range(x):
	# a = input()
	z.append(input())
# print(len(z[0]))
for j in range(len(z)):
	for k in range((y)):
		if z[j][k] == "B":
			t = t + 1
			# print(t,k)
		elif z[j][k] == "W" and t!=0 :
			flag = 1
			k = k - 1
			break
		if k == len(z[j])-1 and t!= 0:
			flag = 1
			break
	if flag == 1:
		break
print(j+int((t-1)/2)+1,k-int((t-3)/2))
