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 ini() {
  int n;
  cin >> n;
  return n;
}
int main() {
  int k = 200, l = 0, c = 200, d = 0, e = 0;
  int p, q, r, s;
  int n = ini(), m = ini();
  char a[n + 5][m + 5];
  for (int i = 1; i <= n; i++)
    for (int j = 1; j <= m; j++) cin >> a[i][j];
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= m; j++) {
      if (a[i][j] == 'B') {
        e++;
        l = max(l, i);
        k = min(k, i);
        d = max(d, j);
        c = min(c, j);
      }
    }
  }
  if (e == 1) {
    cout << k << " " << c << endl;
  } else {
    cout << (l + k) / 2 << " " << (d + c) / 2 << endl;
  }
  return 0;
}
