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())
matr = []
ma = []

for i in range(n): matr.append(input())

for i in range(n):
    for j in range(m):
        if matr[i][j] == 'B':
            ma.append([i, j])

maxi, maxj, mini, minj = -1, -1, 116, 116
if len(ma) == 1:
    print(ma[0][0] + 1, ma[0][1] + 1)
    exit()
for i in range(len(ma)):
    maxi = max(maxi, ma[i][0])
    mini = min(mini, ma[i][0])
    maxj = max(maxj, ma[i][1])
    minj = min(minj, ma[i][1])

print((maxi + mini) // 2 + 1, (minj + maxj) // 2 + 1)

            
