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 n, m;
  cin >> n >> m;
  string ch;
  char t[n][m];
  for (int i = 0; i < n; i++) {
    cin >> ch;
    for (int j = 0; j < m; j++) t[i][j] = ch[j];
  }
  int p = 0;
  int x = 0;
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++) {
      if (t[i][j] == 'B' && !x) {
        p = j;
        x++;
      } else if (t[i][j] == 'B' && x)
        x++;
    }
    if (x == 1) {
      cout << i + 1 << " " << p + 1;
      return 0;
    }
    if (x) {
      cout << i + 1 + (x / 2) << " " << p + 1 + (x / 2);
      return 0;
    }
  }
  return 0;
}
