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;
const int maxn = 1e3 + 5;
const int mod = 998244353;
int n, m;
char mp[maxn][maxn];
int main() {
  cin >> n >> m;
  int u = n + 1, b = 0;
  pair<int, int> lu, rb;
  for (int i = 1; i <= n; ++i) {
    for (int j = 1; j <= m; ++j) {
      cin >> mp[i][j];
      if (mp[i][j] == 'B' && i < u) {
        u = i;
        lu.first = i, lu.second = j;
      }
      if (mp[i][j] == 'B' && i >= b) {
        b = i;
        rb.first = i, rb.second = j;
      }
    }
  }
  cout << (lu.first + rb.first) / 2 << ' ' << (lu.second + rb.second) / 2
       << endl;
}
