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
import math

def test(val):
    staX = -1
    endX = -1
    staY = -1
    endY = -1
    for i in range(len(val)):
        for x in range(len(val[i])):
            if val[i][x] == 'B' and staX == -1:
                staX = x+1
                staY = i+1
            if val[i][x] == 'B' and staX != -1 and staY == i+1:
                endX = x+1
            if val[i][x] == 'B':
                endY = i + 1

    finY = staY + math.floor((endY+1 - staY) / 2)
    finX = staX + math.floor((endX+1 - staX) / 2)
    print(f"{finY} {finX}")

if __name__ == "__main__":
    w = []
    x = int(input('').split(' ')[0])
    for i in range(x):
        w.append(input(''))
    
    test(w)
    