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() {
  std::ios::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  long long n, m, co = 0, row, col;
  cin >> n >> m;
  for (long long i = 0; i <= n - 1; ++i) {
    for (long long j = 0; j <= m - 1; ++j) {
      char x;
      cin >> x;
      if (x == 'B') {
        co++;
        if (co == 1) {
          row = i, col = j;
        }
      }
    }
  }
  long long num = sqrt(co);
  long long mid = num / 2;
  row += (mid + 1);
  col += (mid + 1);
  cout << row << " " << col << endl;
  return 0;
}
