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 inf = 0x3f3f3f3f;
const int maxn = 115 + 5;
char s[maxn][maxn];
int main() {
  int n, m;
  while (~scanf("%d%d", &n, &m)) {
    int mini = inf, maxi = 0, minj = inf, maxj = 0;
    getchar();
    for (int i = 1; i <= n; i++) {
      for (int j = 1; j <= m; j++) {
        scanf("%c", &s[i][j]);
        if (s[i][j] == 'B') {
          mini = min(mini, i);
          minj = min(minj, j);
          maxi = max(maxi, i);
          maxj = max(maxj, j);
        }
      }
      getchar();
    }
    printf("%d %d\n", (mini + maxi) / 2, (minj + maxj) / 2);
  }
  return 0;
}
