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(i) for i in input().split()]
a = [[] for i in range(n)]
x1, x2, y1, y2 = -1, -1, -1, -1
for i in range(n):
    s = input()
    a[i].append(s)
    if s.find("B") != -1 and x1 == -1 and x2 == -1 and y1 == -1:
        x1 = s.find("B") + 1
        x2 = s.rfind("B") + 1
        y1 = i + 1
        y2 = i + 1
    elif s.find("B") != -1:
        y2 = i + 1

print((y2 + y1 + 1)//2, (x1 + x2 + 1)//2)
