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
num = input().split(" ")
n = int(num[0])
m = int(num[1])

table = list()
for i in range(n):
    table.append(input())


for i in range(n):
    flag = True
    for j in range(len(table[i])):
        if table[i][j] == 'B':
            row = i
            col = j 
            while col + 2 < m and row + 2 < n and table[i][col + 2] == 'B' and table[row + 2][j] == 'B':
                col += 2
                row += 2
            if row == i:
                x = i
                y = j
            else:
                x = i + (row - i + 1) / 2
                y = j + (col - j + 1) / 2
            print (int(x + 1), " ", int(y + 1))
            flag = False
            break
    if not flag:
        break

        
                



