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.ArrayDeque;
import java.util.Arrays;
import java.util.Scanner;

public class AimTechA {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        int n = s.nextInt();
        int m = s.nextInt();
        char[][] arr = new char[n][m];
        for (int i = 0; i < n; i++) {
            String str = s.next();
            arr[i] = str.toCharArray();
        }
        int startL = 0;
        int startU = 0;
        for (int i = 0; i < n; i++) {
            if(new String(arr[i]).indexOf('B') != -1){
                startU = i;
                break;
            }
        }
        if(startU == 0 && new String(arr[0]).indexOf('B') == -1){
            System.out.println(0+ " " + 0);
            return;
        }
        for (int i = 0; i < m; i++) {
            if(arr[startU][i] == 'B'){
                startL = i;
                break;
            }
        }
        int endL = startL;
        while(endL < m && arr[startU][endL] == 'B'){
            endL++;
        }

        int endU = startU;
        startL++;
//        endL++;
        startU++;

        while(endU < n && new String(arr[endU]).indexOf('B') != -1){
            endU++;
        }
//        endU++;
        System.out.println(((startU + endU) / 2 )+ " " + ((startL + endL)/2 ));
    }
}
