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
# A. Find Square

n, m = map(int, input().split())

top = [-1, -1]
bottom = [-1, -1]

matrix = list()
for i in range(n):
    s = input()
    matrix.append(s)

for i in range(n):
    left = matrix[i].find('B')
    if left != -1:
        top[0] = i
        top[1] = left
        break

for i in range(n-1, -1, -1):
    right = matrix[i].rfind('B')
    if right != -1:
        bottom[0] = i
        bottom[1] = right
        break

print(1 + top[0] + (bottom[0] - top[0]) // 2, 1 + top[1] + (bottom[1] - top[1]) // 2)
