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.util.*;

public class Main {
	static int cols;
	static int rows;
	static char[][] grid;

	public static void main(String[] args) {
		Scanner console = new Scanner(System.in);
		cols = console.nextInt();
		rows = console.nextInt();
		grid = new char[cols][rows];
		String row;
		for (int i = 0; i<cols; i++) {
			row = console.next();
			for (int j = 0; j<rows; j++) {
				grid[i][j] = row.charAt(j);
			}
		}
		solve();
	}

	public static void solve() {
		outer: for (int i = 0; i<cols; i++) {
			 for (int j = 0; j<rows; j++) {
				 if (grid[i][j] == 'B') {
					 int startX = j;
					 int startY = i;
					 int endX = j;
					 int endY = i;
					 while (true) {
						 if (endX+1>=rows || endY+1>=cols) break;
						 if (grid[endY+1][endX+1] == 'W') break;
						 endX+=1;
						 endY+=1;
					 }
					 System.out.println(getMidPlus1(startY, endY)+" "+getMidPlus1(startX, endX));
					 break outer;
				 }
			 }
		 }
	}
	
	public static int getMidPlus1(int n1, int n2) {
		return (n1+n2)/2+1;
	}
}
