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;
vector<string> v;
int main() {
  int n, m, i, j, k, l;
  cin >> n >> m;
  for (i = 0; i < n; i++) {
    string s;
    cin >> s;
    v.push_back(s);
  }
  int st1, st2, en1, en2;
  int flag = 0;
  for (i = 0; i < n; i++) {
    for (j = 0; j < m; j++) {
      if (v[i][j] == 'B') {
        st1 = i;
        st2 = j;
        flag = 1;
        break;
      }
    }
    if (flag == 1) break;
  }
  en1 = st1, en2 = st2;
  for (j = st2; j < m; j++) {
    if (v[st1][j] == 'B')
      en2++;
    else
      break;
  }
  for (i = st1; i < n; i++) {
    if (v[i][st2] == 'B')
      en1++;
    else
      break;
  }
  en1--, en2--;
  int x = (st1 + en1) / 2, y = (st2 + en2) / 2;
  x++, y++;
  cout << x << " " << y << endl;
  return 0;
}
