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
import math

n, m = map(int, input().split(" "))
first_point = (0, 0)
square_len = 0
found = False

for row in range (0, n):
    line = input()
    if not found:
        prev_char = ""
        for col in range (0, m):
            curr_char = line[col]
            if curr_char == "B":
                square_len += 1
                if prev_char == "W" or prev_char == "":
                    first_point = (row, col)
                found = True
            prev_char = curr_char

center_offset = math.ceil(square_len / 2) - 1
print(first_point[0] + center_offset + 1, first_point[1] + center_offset + 1)