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
r,c = map(int,input().strip().split())

a = []
for i in range(r):
    a.append(input().strip())


left = -1
right = -1
up = -1
down = -1


for i in range(r):
    for j in range(c):
        if a[i][j] == 'B':
            if left < 0 and up < 0:
                left = j
                up = i
            if j == c-1:
                right = j
            elif j < c-1 and a[i][j+1] == 'W':
                right = j
            if i == r-1:
                down = i
            elif i < r -1 and a[i+1][j] == 'W':
                down = i

x = int((up+down)/2)
y = int((left+right)/2)
print(str(x+1)+' '+str(y+1))