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;
void print(long int a) { cout << a << '\t' << '\n'; }
void print(long int a, long int b) { cout << a << '\t' << b << '\t' << '\n'; }
void print(long int a, long int b, long int c) {
  cout << a << '\t' << b << '\t' << c << '\n';
}
void print(long int a, long int b, long int c, long int d) {
  cout << a << '\t' << b << '\t' << c << '\t' << d << '\n';
}
void print(long int a, long int b, long int c, long int d, long int e) {
  cout << a << '\t' << b << '\t' << c << '\t' << d << '\t' << e << '\n';
}
void MAIN() {
  long int n, m;
  cin >> n >> m;
  for (long int i = 0; i < n; i++) {
    string s;
    cin >> s;
    for (long int j = 0; j < m; j++) {
      if (s[j] == 'B') {
        long int x = 0;
        while (s[j + x] == 'B') x++;
        if (x & 1) x++;
        cout << i + x / 2 << " " << j + x / 2;
        return;
      }
    }
  }
}
int32_t main() { MAIN(); }
