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())
e=[]
for i in range(n):

	l=input()
	e.append(l)
# print(*e)
t=[]
for i in range(n):
	t1=[]
	for k in range(m):
		if e[i][k]=="B":
			t1.append(k+1)
	t.append(t1)
# print(*t)
j=1
w=[]
for i in t:
	if len(i)!=0:
		r=len(i)
		r=list(i)
		w.append(j)
	j=j+1
s=len(w)//2
q=len(r)//2
# print(w)
print(w[s],r[q])
