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 long long MAX = 1000000000000000001;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int n, m;
  cin >> n >> m;
  char a[n + 2][m + 2];
  int flag = 0;
  int x, y;
  for (int i = 1; i < n + 1; i++) {
    for (int j = 1; j <= m; j++) {
      cin >> a[i][j];
      if (a[i][j] == 'B' && flag == 0) {
        x = i;
        y = j;
        flag = 1;
      }
    }
  }
  int x1 = n, y1 = m;
  for (int i = x; i < n; i++) {
    if (a[i + 1][y] == 'W') {
      x1 = i;
      break;
    }
  }
  for (int i = y; i < m; i++) {
    if (a[x][i + 1] == 'W') {
      y1 = i;
      break;
    }
  }
  cout << (x1 + x) / 2 << " " << (y1 + y) / 2;
}
