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
inputs=input().split(" ")
columns=int(inputs[0])
lines=[]
for i in range(columns):
    lines.append(input())
index=None
end=None
hindex=None
for i in range(len( lines)):
    for j in range(len(lines[i])):
        if lines[i][j]=='B':
            if index == None:
                index=j
                end=j
                hindex=i
            else:
                end+=1
        elif index is not None:
            break
    if index is not None: break
leng=end-index
print(1+int(hindex+(leng/2)),1+int((index+(leng/2))))
	    				 			  	  	 	     		 	