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;
const int N = 201;
char a[N][N];
int main() {
  int n, m;
  cin >> n >> m;
  int l1, r1;
  int l2, r2;
  bool f = false;
  for (int i = 1; i <= n; i++)
    for (int j = 1; j <= m; j++) {
      cin >> a[i][j];
      if (a[i][j] == 'B' && !f) {
        l1 = l2 = i;
        r1 = r2 = j;
        f = true;
      } else if (a[i][j] == 'B') {
        l2 = i;
        r2 = j;
      }
    }
  int l = (l1 + l2) / 2;
  int r = (r1 + r2) / 2;
  cout << l << " " << r << endl;
  return 0;
}
