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 N = 200;
int n, m, c;
char arr[N][N];
int main() {
  ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
  cin >> n >> m;
  bool M = 0;
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++) {
      cin >> arr[i][j];
    }
  }
  int st = -1, en = -1, I;
  for (int i = 0; i < n && !M; i++) {
    for (int j = 0; j < m && !M; j++) {
      if (arr[i][j] == 'B') {
        M = 1;
        st = j + 1;
        I = i + 1;
        for (int jj = j; jj < m; jj++) {
          if (arr[i][jj] == 'B') {
            en = jj + 1;
          } else {
            break;
          }
        }
      }
    }
  }
  c = en - st + 1;
  cout << ((c + I) + I) / 2 << " " << (en + st) / 2 << endl;
}
