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() {
  ios::sync_with_stdio(0);
  long long t = 1;
  while (t--) {
    int n;
    int m;
    cin >> n >> m;
    string s[n];
    for (int i = 0; i < n; i++) cin >> s[i];
    int one, two;
    bool flag = 1;
    for (int i = 0; i < n && flag; i++) {
      for (int j = 0; j < m && flag; j++) {
        if (s[i][j] == 'B') {
          int p = j;
          while (s[i][p] == 'B' && p < m) p++;
          one = ((p + j) >> 1);
          flag = 0;
        }
      }
    }
    flag = 1;
    for (int j = 0; j < m && flag; j++) {
      for (int i = 0; i < n && flag; i++) {
        if (s[i][j] == 'B') {
          int p = i;
          while (s[p][j] == 'B' && p < n) p++;
          two = ((p + i) >> 1);
          flag = 0;
        }
      }
    }
    cout << two + 1 << " " << one + 1 << endl;
  }
  return 0;
}
