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 MOD = 1e9 + 7;
const int INF = 0x3F3F3F3F;
const long long INFLL = 0x3F3F3F3F3F3F3F3FLL;
int main() {
  ios_base ::sync_with_stdio(false);
  cin.tie(0);
  int n, m;
  cin >> n >> m;
  vector<pair<int, int> > v;
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= m; j++) {
      char x;
      cin >> x;
      if (x == 'B') v.emplace_back(i, j);
    }
  }
  cout << v[(int)(v.size()) / 2].first << " " << v[(int)(v.size()) / 2].second
       << "\n";
  return 0;
}
