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;
bool mycomp(string a, string b) { return a.size() > b.size(); }
int main() {
  int n, m;
  cin >> n >> m;
  int r, c, i, j = 0;
  string s[n], t = "";
  bool flag = true;
  for (i = 0; i < n; i++) {
    cin >> s[i];
    if (s[i].find('B') != string::npos) {
      if (flag) {
        c = (s[i].find_first_of('B') + 2 + s[i].find_last_of('B')) / 2;
        r = i + 1;
        flag = false;
      }
      j = i + 1;
    }
  }
  r = (r + j) / 2;
  cout << r << " " << c;
  return 0;
}
