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 max(long long a, long long b) { return (a > b) ? a : b; }
long long min(long long a, long long b) { return (a < b) ? a : b; }
long long solve() { return 0; }
int32_t main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  {
    long long n, m, b = 0, flag = 0, pos1, pos2, f2 = 0, cnt = 0, ans = -1;
    cin >> n >> m;
    for (long long i = 0; i < n; i++) {
      for (long long j = 0; j < m; j++) {
        char x;
        cin >> x;
        if (x == 'B' && flag == 0) {
          flag = 1;
          pos1 = j + 1;
          pos2 = i + 1;
        }
        if (x == 'B') {
          cnt++;
          ans = max(cnt, ans);
        }
      }
      cnt = 0;
    }
    cout << pos2 + ans / 2 << " " << pos1 + ans / 2 << "\n";
  }
  return 0;
}
