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;
long long ara[300005];
string star[120];
int32_t main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  long long n, m;
  while (cin >> n >> m) {
    for (long long i = 0; i < n; i++) {
      cin >> star[i];
    }
    long long a, b, c, mm;
    a = -1;
    b = -1;
    c = mm = 0;
    for (long long i = 0; i < n; i++) {
      c = 0;
      for (long long j = 0; j < m; j++) {
        if (star[i][j] == 'B') {
          if (a == -1) {
            a = i;
            b = j;
          }
          c++;
        } else
          c = 0;
        mm = max(c, mm);
      }
    }
    cout << a + (mm + 1) / 2 << " " << b + (mm + 1) / 2 << endl;
  }
  return 0;
}
