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;
__attribute__((constructor)) void initial() {
  cin.tie(0);
  ios::sync_with_stdio(false);
}
signed main() {
  long long n, m;
  cin >> n >> m;
  bool topFlag = false;
  long long topPoint = 0;
  long long bottomPoint = 0;
  bool leftFlag = false;
  long long leftPoint = 0;
  long long rightPoint = 0;
  for (long long i = 0; i < n; ++i) {
    for (long long j = 0; j < m; ++j) {
      char tmp;
      cin >> tmp;
      if (tmp == 'B') {
        if (!topFlag) {
          topFlag = true;
          topPoint = i;
        }
        bottomPoint = i;
        if (!leftFlag) {
          leftFlag = true;
          leftPoint = j;
        }
        rightPoint = j;
      }
    }
  }
  cout << ((topPoint + bottomPoint) / 2) + 1 << " "
       << ((leftPoint + rightPoint) / 2) + 1 << endl;
}
