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()]
grid = []
for i in range(n):
    grid.append(input()+"W")
found = False
i = 0
j = 0
while i < n:
    while j < m:
        if grid[i][j] == "B":
            w = 0
            while grid[i][j+w] == "B":
                w+=1
            print(1+i+w//2,1+j+w//2)
            i = n
            j = m
        j+=1
    i+=1
    j = 0
