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
"""
Created on Mon Aug 27 19:27:35 2018
"""

def solve():
    n, m = input().split()
    n, m = int(n), int(m)
    
    arr = []
    first = (-1,-1)
    
    for i in range(n):
        s = ''
        col = input()
        for j in range(m):            
            if col[j] == 'B':
                s += 'B'
                if first == (-1,-1):
                    first = (i,j)

        if s != '':
            arr.append(s)
    if len(arr) > 0: 
        print ((first[0]+1 + first[0] + len(arr))//2, (first[1]+1 + first[1] + len(arr[0]))//2)
    else:
        print (0,0)
            
 
solve()