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=map(int,input().split())
d=[]
for i in range(0,a):
    s=str(input())
    d.append([])
    for t in s:
        d[i].append(t)
m2=0
m1=0
for i in range(0,len(d)):
    t=0
    low=0
    while t==0 and low<len(d[0]):
        if(d[i][low]=='W'):
            low+=1
        else:
            t=1
    up=(len(d[i])-1)
    t=0
    while t==0 and up>=0:
        if(d[i][up]=='W'):
            up-=1
        else:
            t=1
    if(t==1):
        m2=((low+up)/2)+1
for i in range(0,len(d[0])):
    t=0
    low=0
    while t==0 and low<len(d):
        if(d[low][i]=='W'):
            low+=1
        else:
            t=1
    up=(len(d)-1)
    t=0
    while t==0 and up>=0:
        if(d[up][i]=='W'):
            up-=1
        else:
            t=1
    if(t==1):
        m1=((low+up)/2)+1
print(int(m1),int(m2))