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
a,b=input().split()
a=int(a)
b=int(b)
x=[]
for i in range(a):
    x.append(list(input().strip()))

start=[]
end=[]
flag=0
for i in range(len(x)-1,-1,-1):
    for j in range(len(x[0])-1,-1,-1):
        if x[i][j]=="B":
            end.append(i+1)
            end.append(j+1)
            flag=1
            break
        if flag==1:
            break
        
flag=0
for i in range(len(x)):
    for j in range(len(x[0])):
        if x[i][j]=="B":
            start.append(i+1)
            start.append(j+1)
            flag=1
            break
        if flag==1:
            break
        

a=(start[0]+end[0])//2
b=(start[1]+end[1])//2

print(str(a)+" "+str(b))


