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 collections import Counter


def solve(lines):
    min_j, min_i = next((j, i) for i, line in enumerate(lines) for j, c in enumerate(line) if c == "B")
    max_j = max(j for j, c in enumerate(lines[min_i]) if c == "B")
    max_i = max(i for i, line in enumerate(lines) if "B" in line)
    return (min_i + max_i) // 2, (min_j + max_j) // 2


if __name__ == "__main__":
    m, n = map(int, input().split())
    lines = [input().strip() for _ in range(m)]
    i, j = solve(lines)
    print(i + 1, j + 1)
