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;
const int MOD = 1e9 + 7;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int n, m;
  cin >> n >> m;
  vector<vector<int> > a(n, vector<int>(m));
  for (auto &y : a) {
    for (auto &x : y) {
      char c;
      cin >> c;
      if (c == 'W') {
        x = 0;
      } else {
        x = 1;
      }
    }
  }
  for (int i = 0; i < n; ++i) {
    int s = -1, f = -1;
    for (int j = 0; j < m; ++j) {
      if (a[i][j] == 1) {
        if (s == -1) {
          s = j;
          f = j;
        } else {
          f = j;
        }
      }
    }
    if (s != -1) {
      int y = (s + f) / 2, x = i + ((f - s) / 2);
      cout << x + 1 << " " << y + 1;
      return 0;
    }
  }
  return 0;
}
