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;
using ll = long long;
const int INF = 2e9 + 10;
using pii = pair<int, int>;
using vi = vector<int>;
int n, m, k;
const int N = 1e6 + 10;
int r, c;
string s[200];
void solve() {
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= m; j++) {
      if (s[i][j - 1] == 'B') {
        int k = j;
        while (k <= m && s[i][k - 1] == 'B') k++;
        int len = k - j;
        len = (len + 1) / 2;
        r = i + len - 1;
        c = j + len - 1;
        return;
      }
    }
  }
}
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  while (cin >> n >> m) {
    for (int i = 1; i <= n; i++) {
      cin >> s[i];
    }
    solve();
    cout << r << " " << c << endl;
  }
  return 0;
}
