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
inp = input()
n, m = inp.split(' ')
n = int(n)
m = int(m)
x = None
y = None
res = 1
for i in range(0, n):
    t = input()
    length = 1
    for j in range(0, m):
        if (t[j] == 'B'):
            if (x is None and y is None):
                x = i
                y = j
            if j > 0 and t[j-1] == 'B':
                length = length+1
    if length > 1:
        res = length
print(x+1+int(res/2), y+1+int(res/2))
