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
# cook your dish here

n, m = [int(x) for x in input().strip().split()]


row = -1
colm = -1
start_row = -1


lastx = False
for _ in range(n):
    l = input()
    
    if "B" in l and not lastx:
        start_row = _
        lastx = True
    if "B" not in l and lastx:
        row = (_+start_row)//2+1
        lastx = False
    
    lastB = False
    for i in range(m):
        if l[i] == "B" and not lastB:
            col = i
            lastB = True
        if l[i] == "W" and lastB:
            colm = (i+col)//2+1
            lastB = False
            
            
if colm==-1:
    colm = (m+col)//2+1
    
if row==-1:
    row = (n+start_row)//2+1
print (row,colm)