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
from math import ceil

r, c = list(map(int, input().strip().split()))
squre = []
black = []
rw = 0
for i in range(r):
    string = input()
    squre.append(string)
for word in squre:
    if 'B' in word:
        black.append(word)
for index, word in enumerate(squre):
    if 'B' in word:
        rw = index
        break
start = black[0].find('B')
end = black[0].rfind('B')
raw = ceil(len(black)/2) + rw
col = ceil(end - start)/2 + start + 1
print(str(raw) + ' ' + str(int(col)))
