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[1005][1005];
int main() {
  scanf("%d%d\n", &N, &M);
  int xx, yy, x, y;
  xx = -1, x = 1 << 30;
  yy = -1, y = 1 << 30;
  for (int i = 1; i <= N; i++) {
    scanf("%s\n", a[i] + 1);
    for (int j = 1; j <= M; j++)
      if (a[i][j] == 'B') {
        x = min(x, i);
        y = min(y, j);
        xx = max(xx, i);
        yy = max(yy, j);
      }
  }
  printf("%d %d\n", (x + xx) / 2, (y + yy) / 2);
  return 0;
}
