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 itertools
import math
from collections import defaultdict

def input_ints():
    return list(map(int, input().split()))

def solve():
    n, m = input_ints()
    s = []
    for i in range(n):
        s.append(input())
    for d in range(60, -1, -1):
        for x, y in itertools.product(range(d, n - d + 1), range(d, m - d + 1)):
            ok = True
            for i in range(x - d, x + d + 1):
                if s[i][y - d:y + d + 1].count('B') != 2 * d + 1:
                    ok = False
                    break
            if ok:
                print(x + 1, y + 1)
                return

if __name__ == '__main__':
    solve()
