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
#!/usr/bin/env python3
h, w = map(int, input().split())
f = [ input() for y in range(h) ]
ly = 0
while 'B' not in f[ly]:
    ly += 1
ry = ly + 1
while ry < h and 'B' in f[ry]:
    ry += 1
lx = 0
while 'B' != f[ly][lx]:
    lx += 1
rx = lx + 1
while rx < w and 'B' == f[ly][rx]:
    rx += 1
y = (ly + ry) // 2
x = (lx + rx) // 2
print(y + 1, x + 1)
