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>
const int maxn = 1e4 + 5;
const int mod = 19960308;
const int inf = 0x3f3f3f3f;
using namespace std;
int n, m, t, xx, yy, flag;
char a[maxn][maxn];
int main() {
  scanf("%d %d", &n, &m);
  flag = 0;
  int num = 0;
  for (int i = 0; i < n; i++) {
    scanf("%s", a[i]);
    for (int j = 0; j < m; j++) {
      if (flag == 0 && a[i][j] == 'B') {
        xx = i + 1;
        yy = j + 1;
        flag = 1;
      }
      if (a[i][j] == 'B') num++;
    }
  }
  num = sqrt(num);
  int l = num / 2 + num % 2 - 1;
  printf("%d %d\n", xx + l, yy + l);
  return 0;
}
