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;
int32_t main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  long long row, col;
  cin >> row >> col;
  char mat[row][col];
  for (long long i = 0; i < row; i++) {
    for (long long j = 0; j < col; j++) {
      cin >> mat[i][j];
    }
  }
  long long x, y;
  bool ans = false;
  for (long long i = 0; i < row; i++) {
    for (long long j = 0; j < col; j++) {
      if (mat[i][j] == 'B') {
        x = i + 1;
        y = j + 1;
        ans = true;
        break;
      }
    }
    if (ans) break;
  }
  long long rlen = 1;
  long long a = x - 1, b = y;
  while (mat[a][b] == 'B') {
    rlen++;
    b++;
    if (b == col) break;
  }
  long long xidx = x + rlen / 2;
  long long yidx = y + rlen / 2;
  cout << xidx << " " << yidx;
  return 0;
}
