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 = [int(x) for x in input().split()]
rows = []
for _ in range(N):
    A = input().split()
    rows.append(A)
flag = True
i = -1 
jfinal = 0
while flag and i < N:
    i += 1
    j = 0
    while flag and j < M:
        if rows[i][0][j] == 'B':
            flag = False
            jfinal = j
        else:
            j += 1
flag = True
i += 1
jfinal += 1
avgr = i
avgc = jfinal
#print(i,jfinal)
i = N
while flag and i >= 0:
    i -= 1
    j = M - 1
    while flag and j >= 0:
        if rows[i][0][j] == 'B':
            flag = False
            jfinal = j
        else:
            j -= 1
i += 1
jfinal += 1 
avgr += i
avgc += jfinal
#print(i,jfinal)
print(avgr//2,avgc//2)