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())

a = ["" for i in range(n)]

x1, y1 = 0, 0
x2, y2 = -1, -1
flag = True

for i in range(n):
    s = input()
    if flag:
        for j, v in enumerate(s):
            if v == 'B' and flag:
                # print(i, j)
                x1 = i
                y1 = j
                flag = False
    else:
        for j, v in enumerate(s):
            if v == 'B':
                x2 = i
                y2 = j
if x2 == -1:
    x2 = x1
    y2 = y1
# print(y1, y2)
print((x1 + x2 + 2) // 2, (y1 + y2 + 2) // 2)



