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())
middlerow = [0,0]
middlecolumn = [0,0]
foundrow = False
foundcolumn = False

for i in range(0,n):
    row = list(input())
    #print(row)
    if foundrow == False:
        for j in range(0,m):
            if row[j] == 'B' and not foundrow:
                middlecolumn[0] = j+1
                middlecolumn[1] = j+1
                middlerow[0] = i+1
                middlerow[1] = i+1
                foundrow = True
            elif row[j] == 'B':
                middlecolumn[1] = j+1
    else:
        if 'B' in row:
            middlerow[1] = i+1

#print(middlerow)
#print(middlecolumn)

if middlerow[0] == middlerow[1]:
    resultrow = middlerow[0]
else:
    resultrow = (middlerow[1] + middlerow[0])//2

if middlecolumn[0] == middlecolumn[1]:
    resultcolumn = middlecolumn[0]
else:
    resultcolumn = (middlecolumn[1] + middlecolumn[0])//2   

#print("Resultado: ", resultrow, resultcolumn)
print(resultrow, resultcolumn)
        



