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
def FindSq():
    n,m = map(int,raw_input().split())

    square = []
    for i in range(n):
        square.append(raw_input())
    
    start = -1
    end = -1
    l = 0

    for i in range(n):
        for j in range(m):
            if square[i][j] == 'B':
                if start == -1:
                    start = i
                if end == -1:
                    end = j
                l += 1
        if l > 0:
            break
            
    row = start + (l//2)+1
    column = end + (l//2)+1

    print row,column

FindSq()