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 main() {
  int m, n, sti, stj;
  int flag = 1;
  cin >> m >> n;
  getchar();
  char c;
  for (int i = 1; i <= m; ++i) {
    for (int j = 1; j <= n; ++j) {
      c = getchar();
      if (flag) {
        if (c == 'B') {
          if (j == n) {
            cout << i << " " << j;
            return 0;
          } else {
            stj = j;
            flag = 0;
          }
        }
      } else {
        if (c == 'W' || (c == 'B' && j == n)) {
          cout << (i + (j - stj) / 2) << " " << (j + stj) / 2;
          return 0;
        }
      }
    }
    getchar();
  }
}
