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
#!/usr/bin/python3

import math

n, m = [int(x) for x in input().split()]

rect = [input() for _ in range(n)]

done = False

for r in range(n):
    for c in range(m):
        t = rect[r][c]
        if(t == 'B'):
            start = c
            while(c < m and rect[r][c] == 'B'):
                c += 1
            end = c
            sq_len = end - start + 1
            ans = ( r + sq_len//2, start + sq_len//2 )
            done = True
            break
    if(done):
        break

print(' '.join([str(i) for i in ans]))
