7 7 7
1
2
3
4
5
6
7
 4 2 8
1
3
4
2
3
4
1
2
 9 4 9
1
2
3
4
5
6
7
8
9
 7 5 7
1
2
3
4
5
6
7
 15 10 15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
 4 0 4
1
2
3
4
 12 2 12
1
2
3
4
5
6
7
8
9
10
11
12
 10 2 10
1
2
3
4
5
6
7
8
9
10
 7 4 7
1
2
3
4
5
6
7
 7 3 7
1
2
3
4
5
6
7

XXXXXXX
 ..XX.X.X
 ...X.X.XX
 .X.XXXX
 .X.X.X.X.XXXXXX
 ....
 .........X.X
 .......X.X
 .X.X.XX
 ...X.XX

import java.io.*;
import java.util.*;

public class C {
	
	boolean get(long pos, long n, long k) {
		if (k <= 0)
			return true;
		if (n % 2 == 0) {
			long h = n / 2;
			if (pos % 2 == 0) {
				if (k >= h) {
					return false;
				} else
					return get(pos / 2, n / 2, k);
			} else {
				if (k <= h) {
					return true;
				} else
					return get((pos + 1) / 2, n / 2, k - h);
			}
		} else {
			if (pos == n)
				return false;
			return get(pos, n - 1, k - 1);
		}
	}

	void solve() throws Exception {
		long n = nextLong();
		long k = nextLong();
		int p = nextInt();
		for (int i = 0; i < p; i++) {
			boolean t = get(nextLong(), n, k);
			if (!t)
				out.print('X');
			else
				out.print('.');
		}
	}

	void run() {
		try {
			in = new BufferedReader(new InputStreamReader(System.in));
			out = new PrintWriter(System.out);
			//			in = new BufferedReader(new FileReader(filename + ".in"));
			//			out = new PrintWriter(filename + ".out");

			solve();

			out.close();
		} catch (Exception e) {
			e.printStackTrace();
			System.exit(1);
		}
	}

	BufferedReader in;
	StringTokenizer st;
	PrintWriter out;
	final String filename = new String("C").toLowerCase();

	String nextToken() throws Exception {
		while (st == null || !st.hasMoreTokens())
			st = new StringTokenizer(in.readLine());
		return st.nextToken();
	}

	int nextInt() throws Exception {
		return Integer.parseInt(nextToken());
	}

	long nextLong() throws Exception {
		return Long.parseLong(nextToken());
	}

	double nextDouble() throws Exception {
		return Double.parseDouble(nextToken());
	}

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

}
