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
# cook your dish here 
import math
try : 
    n,m =map(int,input().split()) 
    square = [ ] 
    for each in range(0,n): 
        c= input()
        square.append(list(c)) 
    
    start = end = 0    
    flag=0
    for each in range(0, n ):
        if(flag==0):
            
            for each_char in range (0 ,m ): 
                row_cal = each + 1
                if( square[each][each_char] == "B"):
                    if(start==0):
                        start = each_char + 1 
                        end = each_char + 1 
                        flag=1
                    else:
                        end = each_char + 1  
                        flag=1 
        
    col =  (start -1 ) + math.ceil((end - start + 1)/2) 
    row = ( row_cal-1) + math.ceil((end - start + 1)/2) 
    print(row ,col)
    
        
        
        
    
except:
    pass
