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
n,m = map(int,input().split())

counter = 0;
flag = 0;
row = -1;
column = -1;

t = [];

for i in range(n):
	#for j in range(m):
	t.append( input() );
#print(*t)
for i in range(n):

	for j in range(m):
		#print(t[i][j])
		if ( t[i][j] == "B"):
			
			flag = 1;
			counter+=1;
			if column == -1:
				column = j;
				#print("column ", column)
			if row == -1:
				row = i;
				#print("row " + str(row) )
	if flag == 1:
		break;
	

column += counter//2;
row += counter//2;
#print(n,m)
print( row+1, column+1)
