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;
long long n, m, i, j, k, l, a[101010], b[101010], xa, xb, ya, yb;
vector<long long> q[3030];
char s[1010][1010];
int main() {
  cin >> n >> m;
  for (i = 1; i <= n; i++) {
    for (j = 1; j <= m; j++) {
      cin >> s[i][j];
    }
  }
  for (i = 1; i <= n; i++) {
    for (j = 1; j <= m; j++) {
      if (s[i][j] == 'B') {
        xa = i;
        ya = j;
        break;
      }
    }
  }
  for (i = n; i >= 1; i--) {
    for (j = m; j >= 1; j--) {
      if (s[i][j] == 'B') {
        xb = i;
        yb = j;
        break;
      }
    }
  }
  cout << (xa + xb) / 2 << " " << (ya + yb) / 2;
}
