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 r, c;
  string wall[125];
  int x, y;
  bool t = false;
  cin >> r >> c;
  for (int i = 0; i < r; i++) {
    cin >> wall[i];
  }
  for (int i = 0; i < r; i++) {
    if (t) break;
    for (int j = 0; j < c; j++) {
      if (t) break;
      if (wall[i][j] == 'B') {
        x = i;
        y = j;
        while (wall[i + 1][j] == 'B') {
          i++;
        }
        while (wall[i][j + 1] == 'B') {
          j++;
        }
        x = x + (i - x) / 2;
        y = y + (j - y) / 2;
        cout << x + 1 << ' ' << y + 1 << '\n';
        t = true;
      }
    }
  }
  return 0;
}
