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() {
  int x, y, n, m;
  double k = 0;
  char s[115 * 115];
  cin >> x >> y;
  for (int i = 0; i < x * y; i++) {
    cin >> s[i];
    if (s[i] == 'B' && k == 0) {
      n = i + 1;
    }
    if (s[i] == 'B') {
      k++;
    }
  }
  m = n % y;
  if (m == 0) {
    m = y;
  }
  n = n / y;
  if (m > 0 && m != y) {
    n++;
  }
  k = sqrt(k);
  x = n + (k / 2);
  y = m + (k / 2);
  cout << x << "   " << y << endl;
}
