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;
long int mod = 1e9 + 7;
long int x1, x2, Y1, y2, i, j, n, m, k, l;
char a[120][120];
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cin >> n >> m;
  for (long int i = 1; i < n + 1; i++)
    for (long int j = 1; j < m + 1; j++) cin >> a[i][j];
  for (long int i = 1; i < n + 1; i++) {
    for (long int j = 1; j < m + 1; j++) {
      if (a[i][j] == 'B') {
        if (!x1 || !Y1) {
          x1 = i;
          x2 = i;
          Y1 = j;
          y2 = j;
        } else {
          x2 = i;
          y2 = j;
        }
      }
    }
  }
  l = (x1 + x2) / 2;
  k = (Y1 + y2) / 2;
  cout << l << " " << k << '\n';
  return 0;
}
