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())
a = [] ; d = []
for i in range(n):
	b = input()
	e = b
	b = list(b) ; b.sort()
	a.append(b)
	e = list(e) ; d.append(e)
c1 = 0 ; c2 = 0
for i in range(n):
	for j in range(m):
		if a[i][j] == 'B':
			c1 += 1
	if c1 != 0:
		break
for i in range(m):
	for j in range(n):
		if a[j][i] == 'B':
			c2 += 1
	if c2 != 0:
		break
if c1 > c2:
	c = c2
else:
	c = c1
flag = 0
for i in range(n):
	for j in range(m):
		if d[i][j] == 'B':
			flag = 1
			break
	if flag == 1:
		break
x1 = i + 1 ; x2 = i + c ; y1 = j + 1 ; y2 = j + c
x = (x1 + x2) // 2 ; y = (y1 + y2) // 2
print(x, y)
