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
#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, m, nbr1 = 0, val1, val2, ind, ind2;
  cin >> n >> m;
  string s;
  bool res, res1 = true;
  for (int i = 0; i < n; i++) {
    cin >> s;
    res = true;
    for (int j = 0; j < m; j++) {
      if (s[j] == 'B') nbr1++;
      if (s[j] == 'B' && res) {
        ind = j;
        res = false;
      }
    }
    if (nbr1 != 0 && res1) {
      ind2 = i;
      res1 = false;
    }
  }
  nbr1 = (int)sqrt(nbr1);
  val1 = 1 + ind2 + nbr1 / 2;
  val2 = 1 + ind + nbr1 / 2;
  cout << val1 << " " << val2;
  return 0;
}
