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
inp = raw_input().split()
n = int(inp[0])
m = int(inp[1])
B_x = []
B_y = []
data = []
for i in range(n):
	tmp = raw_input()
	data.append(tmp)

for i in range(n):
	for j in range(m):
		if data[i][j] == "B":
			B_x.append(i+1)
			B_y.append(j+1)
print(str(sum(B_x)/len(B_x))+" "+str(sum(B_y)/len(B_y)))
	  				   	 	 		  		 	   		 			