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
from math import inf


def square(n, m, lst):
    minX, maxX, minY, maxY = inf, -inf, inf, -inf
    for i in range(n):
        for j in range(m):
            if lst[i][j] == 'B':
                minX, minY = min(minX, i), min(minY, j)
                maxX, maxY = max(maxX, i), max(maxY, j)
    return (minX + maxX) // 2 + 1, (minY + maxY) // 2 + 1


N, M = [int(z) for z in input().split()]
a = [input() for z in range(N)]
print(*square(N, M, a))
