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())
li = [[j for j in input()] for i in range(n)]

for j in range(m):
    flag = False
    for i in range(n):
        if li[i][j] == "B":
            flag = True
            position1 = i
            break
    if(flag == True):
        break
for j in range(m-1,-1,-1):
    flag = False
    for i in range(n-1,-1,-1):
        if li[i][j] == "B":
            flag = True
            position2 = i
            break
    if(flag == True):
        break
for i in range(n):
    flag = False
    for j in range(m):
        if li[i][j] == "B":
            flag = True
            position3 = j
            break
    if(flag == True):
        break
for i in range(n-1,-1,-1):
    flag = False
    for j in range(m-1,-1,-1):
        if li[i][j] == "B":
            flag = True
            position4 = j
            break
    if(flag == True):
        break

avg1 = (position1+position2)//2 + 1
avg2 = (position3 + position4)//2 + 1
print(avg1,avg2)