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>
#pragma comment(linker, "/stack:200000000")
using namespace std;
const long double eps = 1e-6;
const long long int MOD = 1e9 + 7;
const long long int MAX = 1e5 + 10;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  long double r1, c1, r, c, c_r = 0, c_c = 0;
  bool f = 1;
  cin >> r >> c;
  for (long long int i = 1; i != r + 1; ++i) {
    for (long long int j = 1; j != c + 1; ++j) {
      char temp;
      cin >> temp;
      if (temp == 'B') {
        c_r = i, c_c = j;
        if (f) r1 = i, c1 = j, f = 0;
      }
    }
  }
  r1 -= 1, c1 -= 1;
  c_r -= r1, c_c -= c1;
  cout << r1 + ceil(c_r / 2) << " " << c1 + ceil(c_c / 2);
  return 0;
}
