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 power(long long b, long long exp, long long m) {
  long long ans = 1;
  b %= m;
  while (exp) {
    if (exp & 1) ans = (ans * b) % m;
    exp >>= 1;
    b = (b * b) % m;
  }
  return ans;
}
double ttm;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  long long n, m, x = 0, r, c;
  cin >> n >> m;
  char a[200][200];
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= m; j++) {
      cin >> a[i][j];
      if (a[i][j] == 'B') {
        if (x == 0) {
          r = i, c = j;
        }
        x++;
      }
    }
  }
  long long second = sqrt(x);
  second /= 2;
  cout << r + second << " " << c + second << "\n";
}
