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 sys

def main():
    input = sys.stdin

    dimensions = list(map(int, input.readline().rstrip('\n').split(' ')))

    minRow = dimensions[0] + 1
    minCol = dimensions[1] + 1
    maxRow = -1
    maxCol = -1

    for i in range(0, dimensions[0]):
        line = input.readline()
        for j in range(0, dimensions[1]):
            if line[j] == 'B' :
                minRow = min(i, minRow)
                minCol = min(j, minCol)
                maxRow = max(i, maxRow)
                maxCol = max(j, maxCol)

    print(int((minRow + maxRow) / 2) + 1, int((minCol + maxCol) / 2) + 1)


if __name__=="__main__":
    main()