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 long long N = 117;
long long n, m, xl, yl, xr, yr;
char c[N][N];
int main() {
  cin >> n >> m;
  for (long long i = 1; i <= n; ++i) {
    for (long long j = 1; j <= m; ++j) cin >> c[i][j];
  }
  for (long long i = 1; i <= n; ++i) {
    for (long long j = 1; j <= m; ++j) {
      if (c[i][j] == 'B') {
        xl = xr = i, yl = yr = j;
        for (; i <= n && j <= m; ++i, ++j) {
          if (c[i][j] != 'B') goto lap;
          xr = i, yr = j;
        }
      }
    }
  }
lap:;
  cout << (xl + xr) / 2 << " " << (yl + yr) / 2 << endl;
  return 0;
}
