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(NULL);
  cout.tie(NULL);
  int i, j, r, c, x, y, cnt = 0;
  cin >> r >> c;
  char grid[r + 2][c + 2];
  for (i = 1; i <= r; i++) cin >> grid[i] + 1;
  for (i = 1; i <= r; i++) {
    for (j = 1; j <= c; j++) {
      if (grid[i][j] == 'B') {
        x = i, y = j;
        while (j <= c && grid[i][j] == 'B') ++cnt, ++j;
        cout << x + cnt / 2 << ' ' << y + cnt / 2;
        return 0;
      }
    }
  }
  return 0;
}
