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 a[505][505];
int main() {
  int i, j, x1 = 505, y1 = 505, x2 = 0, y2 = 0;
  scanf("%d%d", &n, &m);
  for (i = 1; i <= n; i++) scanf("%s", a[i] + 1);
  for (i = 1; i <= n; i++)
    for (j = 1; j <= m; j++)
      if (a[i][j] == 'B') {
        x1 = min(x1, i);
        y1 = min(y1, j);
        x2 = max(x2, i);
        y2 = max(y2, j);
      }
  printf("%d %d\n", (x1 + x2) / 2, (y1 + y2) / 2);
}
