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;
bool comp(const pair<string, int> &a, const pair<string, int> &b) {
  if (a.second == b.second) return a.first < b.first;
  return a.second > b.second;
}
inline int mint(int t) { return 60 * t; }
int main() {
  int n, m;
  cin >> n >> m;
  char c[n][m];
  for (long long i = 0; i < n; i++)
    for (long long j = 0; j < m; j++) cin >> c[i][j];
  for (long long i = 0; i < n; i++) {
    for (long long j = 0; j < m; j++) {
      if (c[i][j] == 'B') {
        int cnt = 0;
        while (c[i][j] == 'B' && j < m) j++, cnt++;
        j--;
        if (cnt == 0)
          cout << i + 1 << " " << j + 1;
        else {
          int tp = ceil(1.0 * cnt / 2);
          cout << i + tp << " " << j - cnt + tp + 1;
        }
        return 0;
      }
    }
  }
  return 0;
}
