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 NMax = 203;
int n, m, first_i, first_j;
char x[NMax][NMax];
int main() {
  cin >> n >> m;
  cin.get();
  for (int i = 0; i < n; ++i) {
    cin.getline(x[i], NMax);
  }
  int ok = 0;
  for (int i = 0; i < n && ok == 0; ++i) {
    for (int j = 0; j < m && ok == 0; ++j) {
      if (x[i][j] == 'B') {
        first_i = i;
        first_j = j;
        ok = 1;
        break;
      }
    }
  }
  int len = 0;
  int t = first_j;
  while (x[first_i][t] == 'B') {
    len++;
    t++;
  }
  cout << first_i + 1 + len / 2 << ' ' << first_j + 1 + len / 2 << '\n';
  return 0;
}
