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
ar=[int(i) for i in input().split()]
n=ar[0]
m=ar[1]
ar=[]
for i in range(n):
	s=list(input())
	ar.append(s)
	s=[]
c=1
ar2=[]
ar3=[]
for i in range(0,n):
	if c==0:
		break
	for j in range(0,m):
		if ar[i][j]=='B':
			ar2=[i,j]
			c=0
			break
for i in range(n):
	for j in range(m):
		if ar[i][j]=='B':
			ar3=[i,j]

center=[(ar2[0]+ar3[0])/2,(ar2[1]+ar3[1])/2]
for i in center:
	print(int(i)+1,end=" ")

