import java.io.*;
import java.util.*;
import java.lang.Math;

public class problem_B60 {

    final boolean text = false;

    BufferedReader in;
    PrintWriter out;
    StringTokenizer tok = new StringTokenizer("");

    void init() throws IOException {
        if (text) {
            in = new BufferedReader(new InputStreamReader(System.in));
            out = new PrintWriter(System.out);
        } else {
            in = new BufferedReader(new FileReader("input.txt"));
            out = new PrintWriter("output.txt");
        }
    }

    String readString() throws IOException {
        while (!tok.hasMoreTokens()) {
            tok = new StringTokenizer(in.readLine());
        }
        return tok.nextToken();
    }

    int readInt() throws IOException {
        return Integer.parseInt(readString());
    }

    long readLong() throws IOException {
        return Long.parseLong(readString());
    }

    double readDouble() throws IOException {
        return Double.parseDouble(readString());
    }

    void debug(Object o) {
        System.err.println(o.toString());
    }

    void run() {
        try {
            long t1 = System.currentTimeMillis();
            init();
            solve();
            out.close();
            long t2 = System.currentTimeMillis();
            debug("Time = " + (t2 - t1));
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public static void main(String[] args) {
        (new problem_B60()).run();
    }

    void paint(int x, int y, int z) {
        if (a[x][y][z]<0) {
            return;
        } else {
            a[x][y][z]=3;
            paint(x+1,y,z);
            paint(x,y+1,z);
            paint(x,y,z+1);
            paint(x-1,y,z);
            paint(x,y-1,z);
            paint(x,y,z-1);
        }
    }

    int[][][] a= new int[15][15][15];

    void solve() throws IOException {
        int k=readInt(), n=readInt(), m=readInt();
        for (int i=0; i<k+2; i++) for (int ii=0; ii<n+2; ii++) for (int iii=0; iii<m+2; iii++) a[i][ii][iii]=-1;
        for (int i=0; i<k; i++)
        {   String s;
            for (int ii=0; ii<n; ii++) {
                s=readString();
                for (int iii=0; iii<m; iii++) {
                        a[i+1][ii+1][iii+1]=(s.charAt(iii)=='#' ? -1:1);

                }
            }

        }

        int x=readInt(), y=readInt();
        paint(1,x,y);
        int rez=0;
        for (int i=1; i<k+1; i++) for (int ii=1; ii<n+1; ii++) for (int iii=1; iii<m+1; iii++)
             if (a[i][ii][iii]==3) rez++;
        out.println(rez);

}

}