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;
map<long long int, long long int> mp, mk;
set<long long int> s1, s2;
vector<long long int> v, w;
long long int a[2000006], b[2000006];
string s = "", p = "", q = "";
char ch;
long long int m, n, c, d, i, j, k, l, r, x, t, y, u, e, f, g, h;
int main() {
  cin >> n >> m;
  c = n + 1, d = m + 1;
  char ck[n + 1][m + 1];
  for (i = 0; i < n; i++) {
    for (j = 0; j < m; j++) {
      cin >> ck[i][j];
      if (ck[i][j] == 'B') {
        c = min(c, i);
        d = min(d, j);
        e = max(e, i);
        f = max(f, j);
      }
    }
  }
  cout << (c + e) / 2 + 1 << " " << (d + f) / 2 + 1;
}
