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
import sys
f=sys.stdin
out=sys.stdout

#t=int(f.readline().rstrip('\r\n'))
n,m=map(int,f.readline().rstrip('\r\n').split())
table=[]
for i in range(n):
	s=f.readline().rstrip('\r\n')
	table.append(s)

tli,tlj=0,0
for i in range(n):
	flag=0
	for j in range(m):
		if table[i][j]=="B":
			flag=1
			tli,tlj=i,j
			break
	if flag==1:
		break

tri,trj=-1,-1
bli,blj=-1,-1
i=tli
j=tlj
while j<m and table[i][j]=="B":
	j+=1
tri=tli
trj=j-1
j=tlj
while i<n and table[i][j]=="B":
	i+=1
bli=i-1
blj=tlj

#print(tli,tlj,trj,bli)
c1,c2=((bli-tli)//2),((trj-tlj)//2)

out.write(str(tli+c1+1)+" "+str(tlj+c2+1)+"\n")