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

a = list(map(int, input().split()))
field = []
lensqr = 0
begin = []
answer = False

for i in range(a[0]):
    field.append(input())
    for j in range(a[1]):
        if not answer:
            if field[i][j] == 'B' and j != a[1]-1:
                lensqr += 1
                if len(begin) == 0:
                    begin = [i, j]
            elif (lensqr > 0 or (j == a[1]-1 and field[i][j] == 'B')) and (j == a[1]-1 or field[i][j] == 'W'):
                if len(begin) == 0:
                    begin = [i, j]
                    lensqr += 1
                else:
                    if (j == a[1]-1):
                        lensqr += 1
                l = math.ceil(lensqr / 2)
                begin = [begin[0]+l, begin[1]+l]
                answer = True
                break

print(" ".join(list(map(str, begin))))
