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;
  char c;
  int x1, y1, x2, y2;
  x1 = n;
  y1 = m;
  x2 = 1;
  y2 = 1;
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= m; j++) {
      cin >> c;
      if (c == 'B') {
        if (x1 > i || y1 > j) {
          x1 = i;
          y1 = j;
        }
        if (x2 < i || y2 < j) {
          x2 = i;
          y2 = j;
        }
      }
    }
  }
  cout << (x1 + x2) / 2 << ' ' << (y1 + y2) / 2 << endl;
}
