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() {
  cin.sync_with_stdio(false);
  cin.tie(0);
  int n, m;
  cin >> n >> m;
  bool status = true;
  pair<int, int> u = {-1, -1};
  pair<int, int> v = {-1, -1};
  for (int i = 1; i <= n; i++) {
    string s;
    cin >> s;
    for (int j = 1; j <= m; j++) {
      if (s[j - 1] == 'B') {
        if (status) {
          status = false;
          u = {i, j};
        }
        v = {i, j};
      }
    }
  }
  int y = ((v.first - u.first + 1) / 2) + u.first;
  int x = ((v.second - u.second + 1) / 2) + u.second;
  cout << y << " " << x << '\n';
  return 0;
}
