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.Scanner;

public class Temp{
	static Scanner scan = new Scanner(System.in);
	public static void main(String args[]) {
		int rows = scan.nextInt();
		int cols = scan.nextInt();
		char a[][] = new char[rows][cols];
		for(int i=0;i<rows;i++) {
			a[i] = scan.next().toCharArray();
		}
		int rindex=-1, lindex=-1;
		int row = -1;
		for(int i=0;i<rows;i++) {
			int r = 0, l = cols-1;
			while(r<=l) {
				if(a[i][r]=='B'&&a[i][l]=='B') {
					rindex = r;
					lindex = l;
					row = i;
					break;
				}
				if(a[i][r]=='W') {
					r++;
				}
				if(a[i][l]=='W') {
					l--;
				}
			}
			if(rindex!=-1) break;
		}
		System.out.println((row+(lindex-rindex+1)/2+1)+" "+(rindex+(lindex-rindex+1)/2+1));
	}
	
}