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;
  cin >> n >> m;
  vector<vector<bool> > q(n, vector<bool>(m));
  char ch;
  string s;
  for (int i = 0; i < n; ++i) {
    cin >> s;
    for (int j = 0; j < s.size(); ++j) {
      if (s[j] == 'B') q[i][j] = 1;
    }
  }
  int x, y;
  bool q1 = 0;
  for (int i = 0; i < n; ++i) {
    for (int j = 0; j < m; ++j) {
      if (q[i][j] == 1) {
        x = i, y = j;
        q1 = 1;
        break;
      }
    }
    if (q1 == 1) break;
  }
  int z = 0;
  while (y + z < m && q[x][y + z] == 1) {
    ++z;
  }
  if (z == 1) {
    cout << x + 1 << " " << y + 1;
    return 0;
  }
  z -= 1, z /= 2;
  cout << x + 1 + z << " " << y + 1 + z;
  return 0;
}
