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

f=1
r,n=map(int,input().split())
for x in range (r):
    s=input()
    s1=len(s)
    s2=len(s)
    if f==1:
        for i in range (len(s)):
            if s[i]=="B" and f==1:
                s1=i

                f=0

                p=x
                # print(p,s1)

                if s1==(len(s)-1):
                    s2=s1
                # print(p)

            if i>=s1 and f==0:
                if s[i]!="B":
                    s2=i-1
                    # print(s2)
                    break


    if f==0:
        ans1=(((s2-s1)//2) +s1)
        ans2=(((s2-s1)//2) +p)
        print()
        print(ans2+1,ans1+1)
        break

