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);
  long long int n, m, i, j;
  cin >> n >> m;
  char ch[n][m];
  for (i = 0; i < n; i++) {
    for (j = 0; j < m; j++) cin >> ch[i][j];
  }
  long long int pos1, pos2, c = 0, x, y;
  for (i = 0; i < n; i++) {
    for (j = 0; j < m; j++) {
      if (ch[i][j] == 'B') {
        if (c == 0) {
          pos1 = i;
          pos2 = j;
        }
        c++;
      }
    }
    if (c == 1) {
      cout << pos1 + 1 << " " << pos2 + 1 << endl;
      break;
    } else if (c > 1) {
      x = (c / 2) + pos1 + 1;
      y = (c / 2) + pos2 + 1;
      cout << x << " " << y << endl;
      break;
    }
  }
}
