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
import math
import os
import random
import re
import sys
def findsquare(arr,n,m):
    minp=[-1,-1]
    maxp=[-1,-1]
    for x in range(n):
        for y in range(m):
            if arr[x][y]=='B':
                if minp==[-1,-1]:
                    minp=[x+1,y+1]
                else:
                    maxp=[x+1,y+1]
    if(maxp==[-1,-1]):
        maxp=minp
    return int((minp[0]+maxp[0])/2),int((minp[1]+maxp[1])/2)
if __name__ == '__main__':
    n,m= list(map(int,input().split()))
    arr=[]
    for _ in range(n):
        arr.append([ele for ele in input()]) 
    # findsquare(arr,n,m)
    print(" ".join(list(map(str,findsquare(arr,n,m)))))