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;
bool check(long long n, long long pos) { return n & (1 << pos); }
long long Set(long long n, long long pos) { return n = n | (1 << pos); }
char grid[200][200];
int main() {
  long long i, j, k, l, m, n, o, r, q;
  long long testcase;
  long long input, flag, tag, ans;
  while (cin >> n >> m) {
    for (i = 1; i <= n; i++) {
      scanf("%s", grid[i] + 1);
    }
    long long stx, sty, enx, eny;
    for (i = 1; i <= n; i++) {
      for (j = 1; j <= m; j++) {
        if (grid[i][j] == 'B') {
          stx = i;
          sty = j;
          break;
        }
      }
      if (j <= m) break;
    }
    for (i = n; i >= 0; i--) {
      for (j = m; j >= 0; j--) {
        if (grid[i][j] == 'B') {
          enx = i;
          eny = j;
          break;
        }
      }
      if (j >= 0) break;
    }
    long long x = stx + enx;
    x /= 2;
    long long y = sty + eny;
    y /= 2;
    cout << x << " " << y << endl;
  }
}
