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

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

x1 , x2 = (0 , 0)
s = ''
for i in range(n):
    row = input()
    if 'B' in row and x1 == 0:
        s = row
        x1 = i+1
        x2 = i+1
    elif 'B' in row and x1 != 0:
        x2 += 1
    elif x1 != 0 and x2 != 0 and 'B' not in row:
        pass
    
b = [ind+1 for ind,x in enumerate(s) if x == 'B']
x = ((x2-x1)//2)+x1 
y = b[int(len(b)/2)]
print(x , y)

 
     
