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
#!/usr/bin/python3

import math
import sys


def inp():
    return sys.stdin.readline().rstrip()


def solve(N, M, T):
    ax = -1
    ay = -1
    bx = -1
    by = -1

    for y in range(N):
        for x in range(M):
            if T[y][x] == 'B':
                if ax == -1:
                    ax = x
                    ay = y
                bx = x
                by = y

    return ((ay + by) // 2 + 1, (ax + bx) // 2 + 1)


def main():
    N, M = [int(e) for e in inp().split()]
    T = [inp() for _ in range(N)]
    print(*solve(N, M, T))


if __name__ == '__main__':
    main()
