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_base::sync_with_stdio(false);
  cin.tie(NULL);
  int n, m;
  cin >> n >> m;
  bool found = false;
  int x, y;
  int count = 0;
  for (int i = 0; i < n; ++i) {
    string s;
    cin >> s;
    if (!found) {
      for (int j = 0; j < m; ++j) {
        if (s[j] == 'B') {
          count++;
          if (!found) {
            x = i;
            y = j;
          }
          found = true;
        }
      }
    }
  }
  cout << x + count / 2 + 1 << ' ' << y + count / 2 + 1;
  return 0;
}
