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 n, m, maps[201][201];
template <typename T>
void read(T &a) {
  a = 0;
  char c = getchar();
  T f = 1;
  while (!isdigit(c)) {
    if (c == '-') f = -1;
    c = getchar();
  }
  while (isdigit(c)) {
    a = a * 10 + c - '0';
    c = getchar();
  }
  a *= f;
}
int main() {
  read(n);
  read(m);
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= m; j++) {
      char c = getchar();
      if (c == 'B') maps[i][j] = 1;
    }
    getchar();
  }
  int a = 0, b = 0, c = 0, d = 0;
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= m; j++)
      if (maps[i][j] == 1) {
        a = i;
        b = j;
        break;
      }
    if (a != 0) break;
  }
  for (int i = n; i >= 1; i--) {
    for (int j = m; j >= 1; j--)
      if (maps[i][j] == 1) {
        c = i;
        d = j;
        break;
      }
    if (c != 0) break;
  }
  cout << (a + c) / 2 << " " << (b + d) / 2 << endl;
  return 0;
}
