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;
char c[118][118];
int main() {
  int n, m;
  cin >> n >> m;
  int bx, by;
  bool f = false;
  for (int i = 1; i <= n; ++i) {
    for (int j = 1; j <= m; ++j) {
      cin >> c[i][j];
      if (!f && c[i][j] == 'B') {
        bx = i;
        by = j;
        f = true;
      }
    }
  }
  int ex, ey;
  for (ex = bx + 2; ex <= n; ex += 2)
    if (c[ex][by] != 'B') break;
  for (ey = by + 2; ey <= m; ey += 2)
    if (c[bx][ey] != 'B') break;
  ex -= 2;
  ey -= 2;
  cout << (bx + ex) / 2 << " " << (by + ey) / 2 << endl;
  return 0;
}
