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 int MAXN = 100000;
const int INF = 1e9 + 5;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int r1 = INF, r2 = -1, c1 = INF, c2 = -1, N, M;
  cin >> N >> M;
  for (int i = 1; i <= N; i++) {
    for (int j = 1; j <= M; j++) {
      char c;
      cin >> c;
      if (c == 'B') {
        r1 = min(r1, i);
        r2 = max(r2, i);
        c1 = min(c1, j);
        c2 = max(c2, j);
      }
    }
  }
  cout << r1 + (r2 - r1 + 1) / 2 << " " << c1 + (c2 - c1 + 1) / 2 << "\n";
}
