package aer395;

import java.util.Scanner;

public class AER395 {

    static Scanner in = new Scanner(System.in);

    public static int cortes(boolean[][] tableta, int fini, int cini, int ffin, int cfin) {
        int chocos = 0;
        int almendras = 0;
        boolean trozoLimpio = true;
        int f = fini;

        while (trozoLimpio && f < ffin) {
            int c = cini;
            while (trozoLimpio && c < cfin) { {
                if (tableta[f][c]) {
                    almendras++;
                } else {
                    chocos++;
                }
                trozoLimpio = (chocos == 0 || almendras == 0);
            }
        }
        if (trozoLimpio) {
            return 0;
        } return

    }

    public static void caso() {
        int filas = in.nextInt();
        int columnas = in.nextInt();
        boolean[][] tableta = new boolean[filas][columnas];
        for (int f  = 0; f < filas; f++) {
            String cadenaFila = in.next();
            for (int c = 0; c < columnas; c++) {
                tableta[f][c] = cadenaFila.charAt(c) == '#';
            }
        }
    }

    public static void main(String[] args) {

       while (in.hasNext()) {
           caso();
       }
    }

}