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 inf = (1ll << 30) - 1;
const int maxn = (int)1e5 + 10;
using namespace std;
int n, m;
string second[1111];
void solve() {
  cin >> n >> m;
  for (int i = 0; i < n; i++) cin >> second[i];
  int x = 0, y = 0;
  set<int> Sx, Sy;
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++) {
      if (second[i][j] == 'B') {
        Sx.insert(i);
        Sy.insert(j);
      }
    }
  }
  cout << (*(--Sx.end()) + *Sx.begin()) / 2 + 1 << " ";
  cout << (*(--Sy.end()) + *Sy.begin()) / 2 + 1 << "\n";
}
int main() {
  int t = 1;
  for (int i = 1; i <= t; i++) {
    solve();
  }
  return 0;
}
