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 = map(int, input().split())
matrix = []
for i in range(n):
    row = list(str(input()))
    matrix.append(row)
for j in range(n):
    for k in range(m):
        if(matrix[j][k] == "B"):
            c = j
            d = k
for p in reversed(range(n)):
    for q in reversed(range(m)):
        if(matrix[p][q] == "B"):
            f = p
            g = q
r = int((c+f)/2)
s = int((d+g)/2)
print(r+1 , " " , s+1)