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() {
  long long r1, r2, c1, c2, r, c;
  int n, m, k = 0, i, j;
  char a[120][120];
  cin >> n >> m;
  for (i = 0; i < n; i++)
    for (j = 0; j < m; j++) cin >> a[i][j];
  for (i = 0; i < n; i++) {
    for (j = 0; j < m; j++) {
      if (a[i][j] == 'B') {
        r1 = i + 1;
        c1 = j + 1;
        k = 1;
      }
      if (k == 1) break;
    }
    if (k == 1) break;
  }
  i = r1;
  j = c1;
  while (1) {
    if (a[i][j] == 'B') {
      i++;
      j++;
    } else {
      r2 = i;
      c2 = j;
      break;
    }
  }
  cout << (r2 + r1) / 2 << " " << (c2 + c1) / 2;
}
