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 m, n;
char s[118][118];
int main() {
  int minx = 999, maxx = 0, miny = 999, maxy = 0;
  while (~scanf("%d %d", &m, &n)) {
    for (int i = 0; i < m; i++) {
      scanf("%s", s[i]);
      if (strstr(s[i], "B") != 0) {
        if (minx > i) minx = i;
        if (maxx < i) maxx = i;
      }
    }
    int mid = (minx + maxx) / 2;
    for (int j = 0; j < n; j++) {
      if (s[mid][j] == 'B') {
        if (miny > j) miny = j;
        if (maxy < j) maxy = j;
      }
    }
    cout << (minx + maxx + 1 + 1) / 2 << ' ' << (miny + maxy + 1 + 1) / 2
         << endl;
  }
}
