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() {
  char ch[116];
  int i, j = 1, k, m, n, c, s, e;
  scanf("%d %d ", &n, &m);
  while (j <= n) {
    scanf("%s", ch);
    for (i = 0; ch[i] != '\0'; i++) {
      if (ch[i] == 'B') {
        s = i;
        while (ch[++i] == 'B')
          ;
        e = i - 1;
        c = (e - s + 1) / 2;
        printf("%d %d", j + c, s + 1 + c);
        return 0;
      }
    }
    j++;
  }
}
