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 pprint import pprint
import sys
#sys.setrecursionlimit(100000)
input = sys.stdin.readline

h, w = map(int, input().split())

dat = []
for _ in range(h):
    l = input()
    dat.append(l)
sx, sy = -1, -1
rw, rh = 0, 0
for hh in range(h):
    rw = max(dat[hh].count("B"), rw)
    if sx == -1 and dat[hh].find("B") != -1:
        sx = dat[hh].find("B")
        sy = hh
print(sy + ((rw+1)//2), sx + ((rw+1)//2))
