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 = int(input())
# (n, k) = list(map(int, input().split()))
# s = list(map(int, input().split()))

# f = []
# for i in range(n):
#     f.append([ch for ch in input()])

(n, k) = list(map(int, input().split()))

f = []
resultX = 0
resultY = 0
for i in range(n):
    line =[ch for ch in input()] 
    f.append(line)
    
    lc = line.count('B')
    if lc != 0:
        resultY = line.index('B') + lc // 2
        resultX = i + lc // 2
        print(resultX + 1, resultY + 1)
        break