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())

lista = [input() for _ in range(n)]
count = 0
index1 = 0
index2 = 0

for i in lista:
	if 'B' in i:
		count +=1
		index1 = lista.index(i)

for j in lista[index1]:
	if j == 'B':
		index2 = lista[index1].index(j)
		break

ci = index1 + count//2 + 1
cj = index2 + count//2 + 1


if n > 1 and m == 1:
	cj = 1

print(ci,cj)





		