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 = input().strip().split(' ')
n,m=[int(n),int(m)]
mat=list()
for i in range(n):
    mat.append(list(input().strip())) 


resolved_mat = list()

for i in range(n):
    temp=list()
    for j in range(m):
        if(mat[i][j] == 'B'):
            temp.append((i,j))
    if(len(temp)!=0):
        resolved_mat.append(temp)
if (len(resolved_mat)==1):
    print(resolved_mat[0][0][0]+1,resolved_mat[0][0][1]+1)
else:
    print((resolved_mat[0][0][0]+resolved_mat[-1][0][0])//2+1, (resolved_mat[0][0][1]+resolved_mat[0][-1][1])//2+1)
        