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 sys import stdin
lines = stdin.readlines()


n,m = map(int,lines[0].split())
for i in range(1,n+1):
    c = lines[i][:-1]
    if "B" in c:
        flag = True
        c3 = 0
        for j in range(m):
            if c[j] == "B" and flag == True:
                c2 = j
                flag = False
            elif c[j] == "W" and flag == False:
                c3 = j
                break
        if c3 == 0:
            c3 = m-1
        print i+((c3-c2)/2),(c3+c2)/2+1
        break
        
    