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;
  cin >> n;
  cin >> m;
  string table[n];
  int side_length = 0;
  int first_time = 0;
  int first_x = 0;
  int first_y = 0;
  for (int i = 0; i < n; i++) {
    cin >> table[i];
    for (int a = 0; a < m; a++) {
      if (table[i][a] == 'B') {
        if (first_time == 0) {
          first_time = 1;
          first_x = i;
          first_y = a;
        }
        side_length++;
      }
    }
  }
  side_length = pow(side_length, 0.5);
  cout << first_x + side_length / 2 + 1 << " " << first_y + side_length / 2 + 1
       << "\n";
  return 0;
}
