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 row, col;
  cin >> row >> col;
  char arr[row][col];
  for (int i = 0; i < row; i++) {
    for (int j = 0; j < col; j++) cin >> arr[i][j];
  }
  int cenx = 0, countx = 0, ceny = 0, county = 0;
  int i, j, k;
  for (i = 0; i < row; i++) {
    for (j = 0; j < col; j++) {
      if (arr[i][j] == 'B') {
        k = j;
        cenx += j + 1;
        countx += 1;
      }
    }
    if (countx > 0) break;
  }
  for (i = 0; i < row; i++) {
    if (arr[i][k] == 'B') {
      ceny += i + 1;
      county += 1;
    }
  }
  cout << ceny / county << " " << cenx / countx << endl;
}
