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())
l = []
s = 0
on = 1
for i in range(n):
    text = input()
    if not(on) and "B" not in text:
        break
    if "B" in text:
        l.append(text)
        on = 0
    if on:
        s += 1
    
if len(l) in {1, 2}:
    row_center = s + 1
else:
    row_center = s + 1 + len(l)//2

if l[0].count("B") in {1, 2}:
    column_center = l[0].find("B") + 1
else:
    column_center = l[0].count("B")//2 + l[0].find("B") + 1
    
print(row_center, " ", column_center)
