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
string = raw_input()
A = string.split()
n=int(A[0])
m=int(A[1])
    
arr = []
for i in range(n):
    arr.append([])
    stringa = raw_input()
    for character in stringa:
        arr[i].append(character)
        
begin=0
finish =0
for i in range(n):
    for j in range(m):
        if arr[i][j] == 'B':
            if begin == 0:
                begin = j+1
            if begin != 0:
                finish = j+1
x=(begin+finish)/2

begin=0
finish =0
for j in range(m):
    for i in range(n):
        if arr[i][j] == 'B':
            if begin == 0:
                begin = i+1
            if begin != 0:
                finish = i+1
y=(begin+finish)/2 
 
print y
print x

