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, m;
  scanf("%d %d", &n, &m);
  char table[n][m + 1];
  for (int i = 0; i < n; i++) scanf("%s", table[i]);
  int top, bottom, left, right;
  int columnKey = 0, rowKey = 0;
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++)
      if (table[i][j] == 'B') {
        if (!columnKey) {
          columnKey = 1;
          left = j;
          right = j;
        } else
          right = j;
        if (!rowKey) {
          rowKey = 1;
          top = i;
          bottom = i;
        } else
          bottom = i;
      }
  }
  printf("%d %d ", (top + bottom) / 2 + 1, (left + right) / 2 + 1);
}
