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
st = input()
n = int(st.split()[0])
m = int(st.split()[1])
flag1 = True
flag2 = False

for j in range(n):
    st = input()
    i = 0
    #for i in range(m):
    for letter in st:
        i+=1
        if letter == 'B':
        #if st.split()[i] == 'B':
            if flag2:
                if j==y:
                    l+=1
            if flag1:
                x = i
                y = j
                flag1 = False
                flag2 = True
                l = 1
            
print((y+1)+l//2, end= ' ')
print(x+l//2)          
# print(x)
# print(y)    
# print(l)    