532_B

import java.io.*;
import java.util.*;
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        Solver solver = new Solver();
        solver.solve(in, out);
        out.close();
    }
    static class Solver {
        public void solve(InputReader in, PrintWriter out) {
            int n = in.nextInt();
            int m = in.nextInt();
            int[] a = new int[m];
            for (int i = 0; i < m; ++i) {
                a[i] = in.nextInt();
            }
            boolean[] chosen = new boolean[n + 1];
            int tot = 0;
            for (int i = 0; i < m; ++i) {
                if (!chosen[a[i]]) {
                    ++tot;
                    chosen[a[i]] = true;
                }
                if (tot == n) {
                    out.print("1");
                    tot = 0;
                    chosen = new boolean[n + 1];
                } else {
                    out.print("0");
                }
            }
        }
    }
    static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;
        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }
        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreElements()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }
        public String nextLine() {
            String s = "";
            try {
                s = reader.readLine();
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
            return s;
        }
        public int nextInt() {
            return Integer.parseInt(next());
        }
        public long nextLong() {
            return Long.parseLong(next());
        }
        public double nextDouble() {
            return Double.parseDouble(next());
        }
    }
}