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() {
  long long int n, m;
  cin >> n >> m;
  vector<string> v;
  long long int r_index = -1, c_index = -1, flag = 0;
  for (long long int i = 0; i < n; i++) {
    string s;
    cin >> s;
    if (flag == 0) {
      for (long long int j = 0; j < m; j++) {
        if (s[j] == 'B') {
          r_index = i;
          c_index = j;
          flag = 1;
          break;
        }
      }
    }
    v.push_back(s);
  }
  long long int count = 0;
  long long int i = c_index;
  while (v[r_index][i] != 'W' && i < m) {
    count++;
    i++;
  }
  count = count / 2 + 1;
  r_index += count;
  c_index += count;
  cout << r_index << " " << c_index << endl;
  return 0;
}
