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>
int main() {
  int n;
  std::string s;
  std::cin >> n >> s;
  for (int i = 1; i <= n; i++) {
    std::cin >> s;
    int j;
    for (j = 0; j < s.length(); j++)
      if (s[j] == 'B') break;
    if (j == s.length()) continue;
    int k;
    for (k = j + 1; k < s.length(); k++)
      if (s[k] == 'W') break;
    std::cout << i + ((--k - j + 1) >> 1) << ' ' << ((k + j) >> 1) + 1
              << std::endl,
        exit(0);
  }
  return 0;
}
