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(" "))
a=[]
for i in range(n):
    a.append(input())
p,q,r,s='','','',''
count=0
for i in range(n):
    #for j in range(len(a[i])):
    if a[i].find("B")!=-1 and count==0:
            p=[i,a[i].find("B")]#a[i][j].find("B")
            # print(a[i][::-1])
            q=[i,m-a[i][::-1].find("B")-1]
            count=1
    if a[i].find("B")!=-1 and count==1:
        r=[i,a[i].find("B")]
        s=[i,m-a[i][::-1].find("B")-1]
# print(p,q,r,s)
print((p[0]+q[0]+r[0]+s[0])//4+1,(p[1]+q[1]+r[1]+s[1])//4+1)