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::sync_with_stdio(false);
  int n, m;
  while (cin >> n >> m) {
    string str[n];
    int prothomi, prothomj;
    bool prothom = true;
    int bcount = 0;
    for (int i = 0; i < n; i++) {
      cin >> str[i];
      for (int j = 0; j < m; j++) {
        if (str[i].at(j) == 'B') {
          bcount++;
          if (prothom) {
            prothomi = i + 1;
            prothomj = j + 1;
            prothom = false;
          }
        }
      }
    }
    int b;
    b = sqrt(bcount);
    b /= 2;
    cout << prothomi + b << " ";
    cout << prothomj + b << endl;
  }
  return 0;
}
