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=input().split()
n=int(n)
m=int(m)
arr=[[0 for j in range(m)]for i in range(n)]
for i in range(n):
	arr[i]=input()
found=0

for i in range(n):
	for j in range(m):
		if(arr[i][j]=='B'):
			a=i
			b=j
			found=1
			break			
	if(found==1):
		break
#print("a={}".format(a))
nor=0
for i in range(a,n-1):
	#for j in range(b,m):
	#	if()
	if(arr[i+1][b]=='B'):
		#print("Continuity in {}".format(i))
		nor+=1
	else:
		break
len=nor//2
a=a+len+1
b=b+len+1
print("{} {}".format(a,b))