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 -*-
"""
Created on Tue Oct 13 01:59:58 2020

@author: Dark Soul
"""

[n,m]=list(map(int,input().split()))
arr=[]
ini=1
shesh=[]
for i in range(n):
    x=input('')
    for j in range(m):
        if x[j]=='B':
            if ini:
                prothom=[i,j]
                ini=0
            else:
                shesh=[i,j]
try:
    shesh[0]
except:
    shesh=prothom
x=1+(prothom[0]+shesh[0])//2
y=1+(prothom[1]+shesh[1])//2
print(x,y)
            
        