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.*;
import java.util.*;


public class Main {

    static StringBuilder data = new StringBuilder();
    final static FastReader in = new FastReader();


    public static void main(String[] args) {
        int n = in.nextInt(),m=in.nextInt();
        char[][]a=new char[n][m];
        for (int i = 0; i < n; i++) {
            a[i]=in.nextLine().toCharArray();
        }
        int x=0,y=0,c=0,g=0;
        boolean f=false;
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++) {
                if(a[i][j]=='B'){
                    x=j;
                    y=i;
                    for (int k = j; k < m; k++) {
                      if(a[y][k]=='B'){
                          c++;
                      }else{
                          break;
                      }
                    }
                    for (int k = i; k < n; k++) {
                        if(a[k][x]=='B'){
                            g++;
                        }else{
                            break;
                        }
                    }
                    f=true;
                    break;
                }
            }
            if(f){
                break;
            }

        }
        System.out.println(((y+1)+g/2)+" "+((x+1)+c/2));
    }


    static void fileOut(String s) {
        File out = new File("output.txt");
        try {
            FileWriter fw = new FileWriter(out);
            fw.write(s);
            fw.flush();
            fw.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new
                    InputStreamReader(System.in));
        }

        public FastReader(String path) {
            try {
                br = new BufferedReader(new
                        InputStreamReader(new FileInputStream(path)));
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        float nextFloat() {
            return Float.parseFloat(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }


        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }

}