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 n, m;
char mp[120][120];
int main() {
  int i, j, ct = 1, t;
  while (~scanf("%d%d", &n, &m)) {
    int x, y = -1;
    for (i = 0; i < n; i++) {
      scanf("%s", mp[i]);
      if (y == -1)
        for (j = 0; j < m; j++) {
          if (mp[i][j] == 'B' && y == -1) {
            x = i;
            y = j;
          }
        }
    }
    int h = 0, w = 0;
    for (i = x; i < n; i++) {
      if (mp[i][y] == 'B')
        h++;
      else
        break;
    }
    for (i = y; i < m; i++) {
      if (mp[x][i] == 'B')
        w++;
      else
        break;
    }
    printf("%d %d\n", x + 1 + w / 2, y + 1 + h / 2);
  }
  return 0;
}
