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 = []

first = True
for i in range(n):
    s = input()
    if 'B' in s:
        if first:
            x = i
            first = False
            row = s
        y = i
x_coor = x+(y-x-1)//2 if (y-x-1)%2 == 0 else x+1+(y-x-1)//2

first = True
for j in range(m):
    if row[j] == 'B':
        if first:
            x = j
            first = False
        y = j
y_coor = x+(y-x-1)//2 if (y-x-1)%2 == 0 else x+1+(y-x-1)//2

print(x_coor+1,y_coor+1)
