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 = [int(x) for x in input().split()]

l_st = None
c_st = None
c_en = None

for line_index in range(n):
    line = [ch for ch in input()]

    for column_index, ch in enumerate(line):
        if ch == 'B':
            if l_st is None:
                l_st = line_index
            if c_st is None:
                c_st = column_index

            if l_st == line_index:
                c_en = column_index

center = 1 + (c_en - c_st) / 2

print(int(l_st + center), int(c_st + center))