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()]
min_left, min_rite = 120, 120
found = False
for i in range(n):
    if found:
        input()
    else:
        s = input()
        if "B" in s:
            x1, y1 = i, s.find("B")
            x2, y2 = i, s.rfind("B")
            length = y2 - y1 + 1
            midx    = x1 + (length )//2 + 1
            midy    = y1 + (length )//2 + 1
            print(midx, midy)
            found = True




