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
nm = raw_input().split(' ')
n = int(nm[0])
m = int(nm[1])

first_row = 0
first_col = 0 
last_row = 0
last_col = 0
for row in range(1,n+1):
    temp = raw_input()
    element  = list(temp)
    for each in range(0,m):
        if(element[each] =="B" and first_row == 0 and first_col == 0):
            first_row = row
            first_col = each + 1
        if(element[each] =="B"):
            last_row = row
            last_col = each + 1

center_row = (last_row+first_row)/2
center_col = (first_col+last_col)/2
print center_row,center_col