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;
char a[200][200];
int main() {
  int r, c;
  cin >> r >> c;
  for (int i = 1; i <= r; i++)
    for (int j = 1; j <= c; j++) cin >> a[i][j];
  int x, y;
  bool sec = true;
  ;
  int cnt = 0;
  for (int i = 1; i <= r; i++) {
    for (int j = 1; j <= c; j++) {
      if (a[i][j] == 'B' && sec)
        x = i, y = j, sec = false, cnt++;
      else if (a[i][j] == 'B')
        cnt++;
    }
    if (cnt > 0) break;
  }
  cnt = (cnt % 2 == 0 ? cnt / 2 - 1 : cnt / 2);
  cout << x + cnt << " " << y + cnt << endl;
  return 0;
}
