#include <bits/stdc++.h>
using namespace std;
using pii = pair<int, int>;
using pll = pair<long long, long long>;
const int oo = 0x3f3f3f3f;
const long long long_inf = LONG_LONG_MAX / 2 - 2;
const int mod1 = 1500000001;
mt19937 rng(197);
mt19937 rnv(time(nullptr));
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int n, m;
  cin >> n >> m;
  int lefter = 9999, righter = -1, upper = 99999, downer = -1;
  for (int i = 0; i < n; ++i) {
    string s;
    cin >> s;
    for (int j = 0; j < m; ++j) {
      if (s[j] == 'B') {
        lefter = min(j, lefter);
        righter = max(j, righter);
        upper = min(i, upper);
        downer = max(i, downer);
      }
    }
  }
  cout << (upper + downer) / 2 + 1 << ' ' << (lefter + righter) / 2 + 1;
}
