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() {
  ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
  int n, m, fr, lr, fc, lc;
  bool f = true, ff = true;
  string a;
  cin >> n >> m;
  for (int i = 0; i < n; i++) {
    cin >> a;
    if (a.find_last_of('B') != -1) {
      if (ff) {
        fr = a.find_last_of('B');
        lr = a.find_first_of('B');
        ff = false;
      }
      if (f) fc = i, f = false;
      lc = i;
    }
  }
  cout << (fc + lc) / 2 + 1 << ' ' << (fr + lr) / 2 + 1;
}
