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
import java.io.PrintWriter;
import java.util.Scanner;

public class _template {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		PrintWriter out = new PrintWriter(System.out);
		int r = in.nextInt();
		int c = in.nextInt();
		char[][] grid = new char[r][c];
		for(int i = 0; i < r; ++i) {
			String line = in.next();
			for(int j = 0; j < c; ++j) {
				grid[i][j] = line.charAt(j);
			}
		}
		int startR = -1, startC = -1;
		for(int i = 0; i < r; ++i) {
			for(int j = 0; j < c; ++j) {
				if(grid[i][j] == 'B') {
					startR = i;
					startC = j;
					break;
				}
			}
			if(startR != -1) break;
		}
		int endR = -1, endC = -1;
		for(int i = r - 1; i >= 0; --i) {
			for(int j = c - 1; j >= 0; --j) {
				if(grid[i][j] == 'B') {
					endR = i;
					endC = j;
					break;
				}
			}
			if(endR != -1) break;
		}
		int rr = endR - startR + 1;
		int cc = endC - startC + 1;
		int rlen = endR - startR;
		int clen = endC - startC;
		rr = startR + rlen / 2;
		cc = startC + clen / 2;
		++rr;
		++cc;
		out.println(rr + " " + cc);
		in.close();
		out.close();
	}
}
