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
import math
import bisect

def main():
    n, m = map(int, input().split())
    A = []
    for i in range(n):
        A.append(input())
    row = []
    col = []
    for i in range(n):
        for j in range(m):
            if A[i][j] == 'B':
                row.append(i)
                col.append(j)
    row = list(sorted(set(row)))
    col = list(sorted(set(col)))
    nr = len(row)
    nc = len(col)
    x = row[(nr-1)//2]
    y = col[(nc-1)//2]
    print('%d %d' % (x + 1, y + 1))

if __name__ == "__main__":
    main()
