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() {
  int n, m, mode = 0, starting = 0, ending = 0, len, row;
  cin >> n >> m;
  for (int i = 0; i < n; ++i) {
    string s;
    cin >> s;
    for (int j = 0; j < m && mode != 2; ++j) {
      if (s[j] == 'B' && mode == 0) {
        mode = 1;
        starting = j;
        row = i;
      }
      if ((s[j] == 'W' || j == m - 1) && mode == 1) {
        mode = 2;
        if (j == m - 1)
          ending = m;
        else
          ending = j;
      }
    }
  }
  len = ending - starting;
  row++, starting++;
  cout << (row + len - 1 + row) / 2 << " " << (starting + ending) / 2;
}
