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
from sys import stdin, stdout
from collections import deque


n, m = map(int, stdin.readline().split())
maps = []

for i in range(n):
    maps.append(stdin.readline().strip())


s, c = 0, 0
for i in range(n):
    cnt = 0
    
    for j in range(m):
        if maps[i][j] == 'B':
            cnt += 1
        
    
    if cnt:
        break
    
label = 0
for i in range(n):
    for j in range(m):
        if maps[i][j] == 'B':
            stdout.write(str(i + cnt // 2 + 1) + ' ' + str(j + cnt // 2 + 1) + '\n')
            label = 1
            break
    
    if label:
        break