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;
using std::function;
void decouple() { ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0); }
void solve() {
  int c, r;
  cin >> c >> r;
  int first[2] = {-1}, t = 0;
  vector<vector<char>> f(c, vector<char>(r));
  for (int i = 0; i < c; i++) {
    for (int j = 0; j < r; j++) {
      cin >> f[i][j];
      if (f[i][j] == 'B') t += 1;
      if (f[i][j] == 'B' and first[0] == -1) first[0] = i, first[1] = j;
    }
  }
  cout << (int)(first[0] + sqrt(t) / 2 + 1);
  cout << " " << (int)(first[1] + sqrt(t) / 2 + 1) << '\n';
}
int main() {
  decouple();
  solve();
  return 0;
}
