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, i, j, l, r, u, d;
  cin >> n >> m;
  l = n;
  r = 1;
  u = m;
  d = 1;
  for (i = 0; i < n; i++)
    for (j = 0; j < m; j++) {
      char x;
      cin >> x;
      if (x == 'B') {
        l = min(l, i + 1);
        r = max(r, i + 1);
        u = min(u, j + 1);
        d = max(d, j + 1);
      }
    }
  cout << (l + r) / 2 << ' ';
  cout << (u + d) / 2 << endl;
  return 0;
}
