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 debug = true;
template <typename T1, typename T2>
ostream& operator<<(ostream& os, pair<T1, T2> ptt) {
  os << ptt.first << "," << ptt.second;
  return os;
}
template <typename T>
ostream& operator<<(ostream& os, vector<T> vt) {
  os << "{";
  for (int i = 0; i < vt.size(); i++) {
    os << vt[i] << " ";
  }
  os << "}";
  return os;
}
int n, m;
char c[116][116];
int main(int argc, char* argv[]) {
  cin >> n >> m;
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++) {
      cin >> c[i][j];
    }
  }
  pair<int, int> first;
  bool found = false;
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++) {
      if (c[i][j] == 'B') {
        first = make_pair(i, j);
        found = true;
        break;
      }
    }
    if (found) {
      break;
    }
  }
  pair<int, int> sec;
  for (int i = n - 1; i >= 0; i--) {
    for (int j = m - 1; j >= 0; j--) {
      if (c[i][j] == 'B') {
        sec = make_pair(i, j);
        cout << (i + first.first) / 2 + 1 << " " << (j + first.second) / 2 + 1;
        return 0;
      }
    }
  }
  return 0;
}
