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) = map(int,input().split())
topleft = [-1,-1]
topright = [-1,-1]
bottomleft = [-1,-1]
bottomright = [-1,-1]

for i in range(0,n):
    column = input()
    for j in range(0,m):
        if column[j] == 'B':
            if topleft[0] == -1:
                topleft[0] = i
                topright[0] = i
                topleft[1] = j
                topright[1] = j
                bottomleft[0] = i
                bottomleft[1] = j
                bottomright[0] = i
                bottomright[1] = j
            else:
                bottomleft[0] = i
                bottomright[0] = i
                bottomright[1] =j
                topright[1] = j
print(topleft[0] + (bottomright[0] - topleft[0])//2 + 1)
print(bottomleft[1] + (bottomright[1] - topleft[1])//2 + 1)

