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[n][m];
  int flag = 0;
  int x1, y1;
  int x2, y2;
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++) {
      cin >> c[i][j];
      if (flag == 0 && c[i][j] == 'B') {
        x1 = i + 1;
        y1 = j + 1;
      }
    }
  }
  flag = 0;
  for (int i = n - 1; i >= 0; i--) {
    for (int j = m - 1; j >= 0; j--) {
      if (flag == 0 && c[i][j] == 'B') {
        x2 = i + 1;
        y2 = j + 1;
      }
    }
  }
  int x, y;
  x = (x1 + x2) / 2;
  y = (y1 + y2) / 2;
  cout << x << " " << y;
  return 0;
}
