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() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  long long int t, i, j, k, n, m, c, x = 0, ans, i1, i2, j1, j2;
  cin >> n >> m;
  string a[n];
  for (i = 0; i < n; i++) cin >> a[i];
  for (i = 0; i < n; i++) {
    for (j = 0; j < m; j++) {
      if (x == 0 && a[i][j] == 'B') {
        x = 1;
        i1 = i;
        j1 = j;
      }
      if (x == 1 && a[i][j] == 'B') {
        i2 = i;
        j2 = j;
      }
    }
  }
  cout << (i1 + 1) + ((i2 + 1) - (i1 + 1)) / 2 << ' '
       << (j1 + 1) + ((j2 + 1) - (j1 + 1)) / 2;
  cout << '\n';
  ;
  return 0;
}
