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())
ans=0
arr=[]
for i in range(n):
    s=str(input())
    arr.append(s)
arr1=[]
for i in range(n):
    if('B' in arr[i]):
        arr1.append(i)
arrx=[]
for i in range(m):
    s1=""
    for j in range(n):
        s1+=arr[j][i]
    arrx.append(s1)
arr2=[]
for i in range(m):
    if('B' in arrx[i]):
        arr2.append(i)
print((arr1[-1]+arr1[0]+2)//2,(arr2[-1]+arr2[0]+2)//2)

