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;
int const N = 15000005, md = 998244353;
void setup();
int main() {
  setup();
  int a, b, n = 0, m = 0, f = 0, r, c = -1;
  string s;
  cin >> a >> b;
  for (int x = 0; x < a; x++) {
    cin >> s;
    if (!n) {
      n = count(s.begin(), s.end(), 'B');
    }
    for (int y = 0; y < b; y++) {
      if (!f && s[y] == 'B') {
        f = 1;
        r = x;
        c = y;
      }
      if (c != -1) {
        if (s[c] == 'B' && y == c) {
          m++;
        }
      }
    }
  }
  cout << (r + n / 2 + 1) << " " << (c + m / 2 + 1);
  return 0;
}
void setup() { ios_base::sync_with_stdio(false); }
