import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Main {
    MyScanner ms;
    PrintWriter out;
    String INPUT = "";

    void solve() {
        /*
        int i = ms.ni();
        long l = ms.nl();
        double d = ms.nd();
        char c = ms.nc();
        String s = ms.ns();
        char[] s = ms.ns(int n);
        char[][] map = ms.nm(int n, int m);
        int[] a = ms.na(int n);
        */        
        
		int y = ms.ni();
		int x = ms.ni();
		
		for (int i=0;i<y+2;i++){
			for (int j=0;j<x+2;j++){
				if (i==0 | i==y+1 | j==0 | j==x+1) out.print("#");
				else {
					char c = ms.nc();
					out.print(c);
				}				
			}
			out.println();
		}
		
    }

    void run() throws Exception {
        InputStream is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes());
        ms = new MyScanner(is);
        out = new PrintWriter(System.out);

        long s = System.currentTimeMillis();
        solve();
        out.flush();
        if (!INPUT.isEmpty()) tr(System.currentTimeMillis() - s + "ms");
    }

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

    private static void tr(Object...o) {
        System.out.println(Arrays.deepToString(o));
    }
}

class MyScanner {
    InputStream is;
    private byte[] inbuf = new byte[1024];
    private int lenbuf = 0, ptrbuf = 0;

    public MyScanner(InputStream is){
        this.is = is;
    }
    
    private int readByte() {
        if (lenbuf == -1) throw new InputMismatchException();
        if (ptrbuf >= lenbuf) {
            ptrbuf = 0;
            try {
                lenbuf = is.read(inbuf);
            } catch (IOException e) {
                throw new InputMismatchException();
            }
            if (lenbuf <= 0) return -1;
        }
        return inbuf[ptrbuf++];
    }

    private boolean isSpaceChar(int c) {
        return !(c >= 33 && c <= 126);
    }
    private int skip() {
        int b;
        while ((b = readByte()) != -1 && isSpaceChar(b));
        return b;
    }

    public double nd() {
        return Double.parseDouble(ns());
    }
    public char nc() {
        return (char) skip();
    }

    public String ns() {
        int b = skip();
        StringBuilder sb = new StringBuilder();
        while (!(isSpaceChar(b))) { // when nextLine, (isSpaceChar(b) && b != ' ')
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }

    public char[] ns(int n) {
        char[] buf = new char[n];
        int b = skip(), p = 0;
        while (p < n && !(isSpaceChar(b))) {
            buf[p++] = (char) b;
            b = readByte();
        }
        return n == p ? buf : Arrays.copyOf(buf, p);
    }

    public char[][] nm(int n, int m) {
        char[][] map = new char[n][];
        for (int i = 0; i < n; i++) map[i] = ns(m);
        return map;
    }

    public int[] na(int n) {
        int[] a = new int[n];
        for (int i = 0; i < n; i++) a[i] = ni();
        return a;
    }

    public int ni() {
        int num = 0, b;
        boolean minus = false;
        while ((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
        if (b == '-') {
            minus = true;
            b = readByte();
        }

        while (true) {
            if (b >= '0' && b <= '9') {
                num = num * 10 + (b - '0');
            } else {
                return minus ? -num : num;
            }
            b = readByte();
        }
    }

    public long nl() {
        long num = 0;
        int b;
        boolean minus = false;
        while ((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
        if (b == '-') {
            minus = true;
            b = readByte();
        }

        while (true) {
            if (b >= '0' && b <= '9') {
                num = num * 10 + (b - '0');
            } else {
                return minus ? -num : num;
            }
            b = readByte();
        }
    }    
}

Measured memory_bytes: 21588