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=input()
b=a.split()
no_of_lines=b[0]
lines=""
for i in range(int(b[0])):
    lines+=input()+"\n"
L1=[]
L2=[]
L3=[]
for elem in lines:
    L1=L1+[elem]
for elem in lines:
    if elem=='\n':
        L1.remove(elem)
for i in range(1,int(b[0])*int(b[1])+1):
    L2=L2+[i]
for i in range(0,int(b[0])*int(b[1])):
    if L1[i]=='B':
        L3=L3+[L2[i]]
x=int(L3[int(((len(L3)-1)/2))])
if x%int(b[1])!=0:
    print(int(x/int(b[1])+1),int(x%int(b[1])))
elif x%int(b[1])==0:
    print(int(x/int(b[1])),int(b[1]))
       