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;
const int INF = 10e7;
int main() {
  int n, m;
  char c;
  int flag = 0;
  cin >> n >> m;
  vector<vector<int> > a(n, vector<int>(m, 0));
  int id_i = -1, id_j = -1;
  for (int i = 0; i < n; ++i) {
    for (int j = 0; j < m; ++j) {
      cin >> c;
      if (c == 'B') {
        a[i][j] = 1;
        if (flag == 0) {
          flag = 1;
          id_i = i, id_j = j;
        }
      }
    }
  }
  int j = id_j, i = id_i, cnt_j = 0, cnt_i = 0;
  while (j < m && a[i][j] == 1) {
    cnt_j++;
    j++;
  }
  j = id_j;
  while (i < n && a[i][j] == 1) {
    cnt_i++;
    i++;
  }
  cout << id_i + (cnt_i / 2) + 1 << " " << id_j + (cnt_j / 2) + 1;
  return 0;
}
