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;
FILE *in, *out;
int N, M, K;
string ar[210];
int read() {
  int i, j, k;
  cin >> N >> M;
  int minx = ((1 << 30) - 1), miny = ((1 << 30) - 1), maxx = 0, maxy = 0;
  for (i = 0; i < N; i++) {
    cin >> ar[i];
    for (j = 0; j < M; j++) {
      if (ar[i][j] == 'B') {
        minx = min(minx, i);
        miny = min(miny, j);
        maxx = max(maxx, i);
        maxy = max(maxy, j);
      }
    }
  }
  cout << (minx + maxx) / 2 + 1 << " " << (miny + maxy) / 2 + 1 << endl;
  return 0;
}
int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  cout.tie(nullptr);
  in = stdin;
  out = stdout;
  read();
  return 0;
}
