import java.util.ArrayList;
import java.util.Scanner;
import java.util.Stack;

public class First {

    public class lake{
        int x;
        int y;
        int cells;
    }


    public static void main(String[] args) {
        // TODO Auto-generated method stub

        Scanner s = new Scanner(System.in);

        int n = s.nextInt();
        int m = s.nextInt();
        int k = s.nextInt();

        String [] map = new String[n+2];
        String temp = "";
        for(int i = 0; i < m+2; i++) {
            temp += "#";
        }
        map[0] = temp;
        s.nextLine();
        for(int i = 1; i <= n; i++) {
            String t = s.nextLine();
            map[i] = ".";
            map[i] += t;
            map[i] += ".";

        }
        map[n+1] = temp;

        for(int i = 0; i < n+2; i++) {

            System.out.print(map[i]);
            System.out.println();

        }

        ArrayList<lake> myLakes = new ArrayList<>();
        temp = "";
        int x1 = 0;
        int y1 = 0;
        Stack<Character> st = new Stack<>();
        int counter = 0;
        for(int i = 1; i < n+1; i++) {
            temp = map[i];
            for(int j = 1; j < temp.length()-1; j++) {
                if(temp.charAt(j) == '.' && temp.charAt(j-1) != '#' && temp.charAt(j+1) != '#' && map[i-1].charAt(j) != '#' &&
                        map[i+1].charAt(j) != '#' ) {
                    st.push(temp.charAt(j));
                    counter++;
                    x1 = j;
                    y1 = i;
                }
                else {
                    lake l = new lake();
                    l.cells = counter;
                    l.x = x1;
                    l.y = y1;
                    myLakes.add(l);
                    while(!st.isEmpty()) {
                        st.pop();
                    }
                }
            }


        }















    }

}