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;
int gcd(int a, int b) { return b == 0 ? a : gcd(b, a % b); }
const int MAXDIM = 115;
int h, w;
char g[MAXDIM][MAXDIM + 1];
void run() {
  scanf("%d%d", &h, &w);
  for (int x = (0); x < (h); ++x) scanf("%s", g[x]);
  int lx = INT_MAX, ly = INT_MAX, hx = INT_MIN, hy = INT_MIN;
  for (int x = (0); x < (h); ++x)
    for (int y = (0); y < (w); ++y)
      if (g[x][y] == 'B') {
        lx = min(lx, x);
        ly = min(ly, y);
        hx = max(hx, x);
        hy = max(hy, y);
      }
  int cx = lx + (hx - lx) / 2, cy = ly + (hy - ly) / 2;
  printf("%d %d\n", cx + 1, cy + 1);
}
int main() {
  run();
  return 0;
}
