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;
struct str {
  int x, y;
};
int main() {
  string st;
  str a, b;
  int j, n, m, i, flag = 0, c = 0;
  cin >> n >> m;
  for (i = 0; i < n; i++) {
    cin >> st;
    for (j = 0; j < st.size(); j++) {
      if (st[j] == 'B') {
        if (flag == 0) {
          a = {i + 1, j + 1};
          flag = 1;
        } else {
          b = {i + 1, j + 1};
          c = 1;
        }
      }
    }
  }
  int x = ((b.x - a.x) / 2) + a.x;
  int y = ((b.y - a.y) / 2) + a.y;
  if (c == 0) x = a.x, y = a.y;
  cout << x << " " << y << "\n";
  return 0;
}
