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
a , b = [int(i) for i in input().split()]
k = m = w = 0
for i in range(a):
    w += 1
    l = input()
    m = 0
    for j in l:
        m += 1
        if(j=='B'):
            k += 1
        if(j=='W' and k >= 1):
            break
        if(m == b):
            m += 1
            break
    if(k>0):
        break
print(w + k//2, m-k//2-1) 
