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 s[120][120];
int main() {
  int n, m, l, a, i;
  char *p;
  bool flag = false;
  scanf("%d%d", &n, &m);
  for (i = 0; i <= n; i++) {
    if (i != n) scanf("%s", s[i]);
    if (flag) {
      if (i != n && s[i][l] == 'B')
        a++;
      else
        break;
    } else {
      if (p = strstr(s[i], "B")) {
        a = 0;
        while (*p == 'B') {
          p++;
          a++;
        }
        l = p - s[i] - a / 2;
        flag = true;
        a = 1;
      }
    }
  }
  printf("%d %d", i - a / 2, l);
  return 0;
}
