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
from math import *
s=[int(n) for n in input().split()]
z=[]
p=[]
a=0
b=0
for n in range(s[0]):
	z.append([k for k in input()])
	if 'B' in z[n]:
		p.append(1)
	else:
		p.append(0)
	if 'B' in z[n]:
		a=z[n].index('B')
		b=s[1]-1-z[n][::-1].index('B')


x=ceil((a+b)/2)
g=p.index(1)
h=s[0]-1-p[::-1].index(1)
y=ceil((g+h)/2)
print(1+y,x+1)