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>
#pragma comment(linker, "/stack:16777216")
using namespace std;
const double PI = acos(-1.0);
const int INF = 1000 * 1000 * 1000 + 7;
const long long LINF = INF * (long long)INF;
const int MAX = 100007;
const int CNT = 301;
const int MOD = 1000000007;
int main() {
  int n, m;
  cin >> n >> m;
  int lx = INF, rx, ly = INF, ry;
  for (int i = (0); i < (n); ++i) {
    string s;
    cin >> s;
    for (int j = (0); j < ((int)s.size()); ++j)
      if (s[j] == 'B') {
        lx = min(lx, i);
        rx = i;
        ly = min(ly, j);
        ry = j;
      }
  }
  cout << (lx + rx) / 2 + 1 << ' ' << (ly + ry) / 2 + 1 << endl;
  return 0;
}
