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() {
  int n, m, c = 0;
  cin >> n >> m;
  vector<int> co, ro;
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++) {
      char s;
      cin >> s;
      if (s == 'B') {
        c += 1;
        co.push_back(j);
        ro.push_back(i);
      }
    }
  }
  int nu = sqrt(c), fco = co[0], fro = ro[0], r1 = (1 + nu) / 2,
      c1 = (1 + nu) / 2, r, cute;
  r = (fro + r1);
  cute = (fco + c1);
  cout << r << " " << cute;
  return 0;
}
