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>
#pragma GCC optimize("Ofast")
using namespace std;
const int inf = (int)1e9;
signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int n, m;
  cin >> n >> m;
  vector<string> a;
  a.resize(n);
  for (auto i = 0; i < n; ++i) cin >> a[i];
  int lx = inf, ly = inf, rx = -inf, ry = -inf;
  for (auto i = 0; i < n; ++i) {
    for (auto j = 0; j < m; ++j) {
      if (a[i][j] == 'W') continue;
      if (i < lx || (i == lx && j < ly)) {
        lx = i;
        ly = j;
      }
      if (i > rx || (i == rx && j > ry)) {
        rx = i;
        ry = j;
      }
    }
  }
  int h = (rx - lx + 1) / 2;
  cout << lx + 1 + h << ' ' << ly + 1 + h << endl;
  return 0;
}
