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 = list(map(int,input().split()))
z = []
p = []
r = []
for i in range(n):
	a = input()
	z.append(a)
for j in range(len(z)):
	for k in range(len(z[j])):
		if z[j][k]=="B":
			p.append(j+1)
b = (p[0]+p[-1])//2
for k in range(len(z[0])):
	if z[b-1][k]=="B":
		r.append(k+1)
c = (r[0]+r[-1])//2
print(b,c)	