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
from itertools import permutations

DEBUG = 0
if DEBUG:
    f = open("input.txt", "r")
    input = f.readline
else:
    input = sys.stdin.readline

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

def main():
    INF = int(1e9)
    n, m = mp()
    a = []
    for i in range(n):
        a.append(input().strip())
    imax, imin, jmax, jmin = 0, INF, 0, INF
    for i in range(n):
        for j in range(m):
            if a[i][j] == 'B':
                imax = max(imax, i)
                jmax = max(jmax, j)
                jmin = min(jmin, j)
                imin = min(imin, i)
    print((imax + imin) // 2 + 1, 1 + (jmax + jmin) // 2)
main()