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] = input().split()
n = int(n)
m = int(m)

arr = [None for _ in range(n)]

for i in range(n):
    arr[i] = input()

flag = None
flag1 = None
for i in range(n):
    for j in range(m):
        if flag == None and arr[i][j] == 'B':
            flag = [i + 1, j + 1]
        if flag != None and arr[i][j] == 'B':
            flag1 = [i + 1, j + 1]

print((flag[0] + flag1[0]) // 2, (flag[1] + flag1[1]) // 2)
