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())
array = []
for i in range (n):
    array.append(list(input()))
x1, x2, y1, y2 = 120, 0, 120, 0
rowCount = 0
for row in array:
    rowCount += 1
    colCount = 0
    for item in row:
        colCount += 1
        if(item == 'B'):
            x1 = min(x1, colCount)
            x2 = max(x2, colCount)
            y1 = min(y1, rowCount)
            y2 = max(y2, rowCount)
          
print (int((y1+y2)/2), int((x1+x2)/2))
