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/python
# -*- coding: utf-8 -*-


def get_data(NN):
    out = []
    for i in range(int(NN[0])):
        out.append(input())
    return out


NN = input().split(' ')
data = get_data(NN)

n = 0
first = 0
for st in data:
    new = True
    for i, sumb in enumerate(st):
        if sumb == 'B':
            n = n + 1
            if new:
                new = False
                first = i + 1
    if not new:
        break

first = int(first + (n - 1)/2)

sec = 0
n = 0
new = True
for i, st in enumerate(data):
    if 'B' in st:
        n = n + 1
        if new:
            new = False
            sec = i + 1

sec = int(sec + (n - 1)/2)

print(' '.join((str(sec), str(first))))
#5 6
#WWBBBW
#WWBBBW
#WWBBBW
#WWWWWW
#WWWWWW