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(void) {
  int n, m, i, j, count = 0, index = 0, ctr = 0;
  string s[116], ss, sss;
  int r, c;
  cin >> n >> m;
  for (i = 0; i < n; i++) {
    cin >> s[i];
    ss = s[i];
    for (j = 0; j < m; j++) {
      if (ss[j] == 'B') count++;
    }
  }
  count = sqrt(count);
  if (count == 1) {
    for (i = 0; i < n; i++) {
      sss = s[i];
      for (j = 0; j < m; j++) {
        if (sss[j] == 'B') cout << i + 1 << " " << j + 1;
      }
    }
    return 0;
  } else {
    index = count / 2;
    for (i = 0; i < n; i++) {
      sss = s[i];
      for (j = 0; j < m; j++) {
        if (sss[j] == 'B') {
          r = i;
          c = j;
          ctr = 1;
          break;
        }
      }
      if (ctr == 1) break;
    }
    cout << r + index + 1 << " " << c + index + 1;
  }
  return 0;
}
