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 = 1e7 + 10;
const int INF = 0x3f3f3f3f;
const double EPS = 1e-10;
inline int read() {
  int ret = 0, f = 0;
  char ch = getchar();
  while (ch > '9' || ch < '0') f ^= ch == '-', ch = getchar();
  while (ch <= '9' && ch >= '0') ret = ret * 10 + ch - '0', ch = getchar();
  return f ? -ret : ret;
}
int n, m;
char s[1005];
int main() {
  scanf("%d%d", &n, &m);
  int x = 0, y = 0;
  int cnt = 0;
  for (int i = 1; i <= n; i++) {
    scanf("%s", s + 1);
    for (int j = 1; j <= m; j++)
      if (s[j] == 'B') cnt++, x += i, y += j;
  }
  x /= cnt;
  y /= cnt;
  printf("%d %d\n", x, y);
  return 0;
}
