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())
q=[]
#x=""
for iii in range(n):
    #x=x+"W"
    q.append(input())
#q.append(x)
r=-1
c=-1
rr=0
cc=0
flag=0

for i in range(n):
    for j in range(m):
        if q[i][j]=="B":
            count=0
            for k in range(j,m):
                if q[i][k]=="B":
                    count+=1

                    #print("c")
                    #print(c,k)
                    c=j+(count//2)



            #print()
            count=0
            for k in range(i,n):
                if q[k][j]=="B":
                    #r=k-i
                    count+=1
                    #print("r")
                    #print(r,k)
                    r=i+(count//2)


            #print()
            flag=1
            break
    if flag==1:
        break

print(r+1,c+1)

