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
# -*- coding:utf-8 -*-
#[n, m] = [int(x) for x in raw_input().split()]
def some_func():
    """
    """
    n,m = [int(x) for x in raw_input().split()]
    n_list = []
    for i in range(n):
        n_list.append(raw_input())
    a,b = -1,-1
    for i in range(n):
        f1,f2 = -1,-1
        for j in range(m):
            if n_list[i][j]=="B":
                f2=j
                if f1==-1:
                    f1=j
        if f1!=-1 and f2!=-1:
            a = (f1+f2)/2 +1
            break
    for j in range(m):
        f1,f2 = -1,-1
        for i in range(n):
            if n_list[i][j]=="B":
                f2=i
                if f1==-1:
                    f1=i
        if f1!=-1 and f2!=-1:
            b = (f1+f2)/2 +1
            break
    print  b,a





if __name__ == '__main__':
    some_func()


