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 int maxn = 200 + 5;
const int INF = 0x3f3f3f3f;
int mp[maxn][maxn];
int n, m;
char s;
int main() {
  while (cin >> n >> m) {
    int posx1 = 0, posy1, posx2, posy2;
    memset(mp, 0, sizeof(mp));
    for (int i = 1; i <= n; i++) {
      for (int j = 1; j <= m; j++) {
        cin >> s;
        if (s == 'B') {
          mp[i][j] = 1;
          if (!posx1) {
            posx1 = i;
            posy1 = j;
          }
          posx2 = i;
          posy2 = j;
        }
      }
    }
    cout << (posx2 + posx1) / 2 << " " << (posy1 + posy2) / 2 << endl;
  }
  return 0;
}
