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_base::sync_with_stdio(false);
  cin.tie(0);
  int r, c;
  cin >> r >> c;
  string str[r];
  for (int i = 0; i < r; i++) {
    cin >> str[i];
  }
  int ar = 0;
  int ac = 0;
  bool ok = true;
  for (int i = 0; i < r && ok; i++) {
    for (int j = 0; j < c && ok; j++) {
      if (str[i][j] == 'B') {
        ok = false;
        ar += i;
        ac += j;
      }
    }
  }
  ok = true;
  for (int i = r - 1; i >= 0 && ok; i--) {
    for (int j = c - 1; j >= 0 && ok; j--) {
      if (str[i][j] == 'B') {
        ok = false;
        ar += i;
        ac += j;
      }
    }
  }
  ar /= 2;
  ac /= 2;
  ar++;
  ac++;
  cout << ar << " " << ac << endl;
}
