1
& 0
 1
^ 123
 10
^ 218
& 150
| 935
& 61
| 588
& 897
| 411
| 584
^ 800
| 704
 3
& 1
& 3
& 5
 1
| 123
 1
^ 0
 1
| 1023
 3
& 242
^ 506
^ 522
 10
^ 160
& 1021
& 510
^ 470
& 1022
& 251
& 760
& 1016
| 772
| 515
 1
& 1023
 1
| 0
 2
| 56
^ 875
 1
^ 1023
 2
| 999
^ 689
 3
^ 125
^ 377
& 1019
 1
& 123

3
& 0
| 0
^ 0
 3
& 1023
| 0
^ 123
 3
& 763
| 763
^ 0
 3
& 1
| 0
^ 0
 3
& 1023
| 123
^ 0
 3
& 1023
| 0
^ 0
 3
& 1023
| 1023
^ 0
 3
& 1010
| 768
^ 240
 2
| 775
^ 112
 3
& 1023
| 0
^ 0
 3
& 1023
| 0
^ 0
 3
& 983
| 16
^ 835
 3
& 1023
| 0
^ 1023
 3
& 350
| 326
^ 16
 3
& 1019
| 0
^ 256
 3
& 123
| 0
^ 0

import java.io.BufferedReader;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;

public class ShortProgram implements Closeable {

    private InputReader in = new InputReader(System.in);
    private PrintWriter out = new PrintWriter(System.out);

    public void solve() {
        int n = in.ni();
        List<Integer> and = new ArrayList<>(), or = new ArrayList<>(), xor = new ArrayList<>();
        while (n-- > 0) {
            char op = in.next().charAt(0);
            if (op == '&') and.add(in.ni());
            else if (op == '|') or.add(in.ni());
            else xor.add(in.ni());
        }
        List<String> result = new ArrayList<>();
        if (and.size() > 0) {
            int value = and.get(0);
            for (int i = 1; i < and.size(); i++) {
                value &= and.get(i);
            }
            if (value > 0) result.add("& " + value);
            else {
                out.println(1);
                out.println("& 0");
                return;
            }
        }
        if (or.size() > 0) {
            int value = or.get(0);
            for (int i = 1; i < or.size(); i++) {
                value |= or.get(i);
            }
            if (value > 0) result.add("| " + value);
        }
        if (xor.size() > 0) {
            int value = xor.get(0);
            for (int i = 1; i < xor.size(); i++) {
                value ^= xor.get(i);
            }
            if (value > 0) result.add("^ " + value);
        }
        out.println(result.size());
        result.forEach(out::println);
    }

    @Override
    public void close() throws IOException {
        in.close();
        out.close();
    }

    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.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int ni() {
            return Integer.parseInt(next());
        }

        public long nl() {
            return Long.parseLong(next());
        }

        public void close() throws IOException {
            reader.close();
        }
    }

    public static void main(String[] args) throws IOException {
        try (ShortProgram instance = new ShortProgram()) {
            instance.solve();
        }
    }
}
