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.*;
import java.util.*;

/*
TASK: CFC
LANG: JAVA
 */
public class CFC {
    static int n;
    static String cho;
    static int cnst;
    static int[] kek;
    public static void main(String[] args) throws IOException {
        FastScanner in = new FastScanner(System.in);
        n = in.nextInt();
        kek = new int[10];
        Arrays.fill(kek , 2);
        for(int i = 0;i < n; i++){
            cho = in.next();
            cnst = in.nextInt();
            if(cho.equals("|")){
                for(int j = 0; j < 10; j++){
                    if(cnst % 2 == 1) kek[j] = 1;
                    cnst /= 2;
                }
            }
            else if(cho.equals("^")){
                for(int j = 0;j < 10; j++){
                    if(cnst % 2 == 1){
                        if(kek[j] == 0){
                            kek[j] = 1;
                        }
                        else if(kek[j] == 1){
                            kek[j] = 0;
                        }
                        else if(kek[j] == 2){
                            kek[j] = 3;
                        }
                        else if(kek[j] == 3){
                            kek[j] = 2;
                        }
                    }
                    cnst /= 2;
                }
            }
            else{
                for(int j = 0;j < 10; j++){
                    if(cnst % 2 == 0)kek[j] = 0;
                    cnst /= 2;
                }
            }
        }
        int and = 0;
        int or = 0;
        int xor = 0;
        for(int i = 9;i >= 0; i--){
            and *= 2;
            or *= 2;
            xor *= 2;
            if(kek[i] == 3)xor++;
            if(kek[i] == 1)or++;
            if(kek[i] == 0)and++;
        }
        and = 1023 - and;
        System.out.println(3);
        System.out.println("& " + and);
        System.out.println("| " + or);
        System.out.println("^ " + xor);
    }

    private static class FastScanner {
        private InputStream stream;
        private byte[] buf = new byte[1024];
        private int curChar;
        private int numChars;

        public FastScanner(InputStream stream) {
            this.stream = stream;
        }

        int read() {
            if (numChars == -1)
                throw new InputMismatchException();
            if (curChar >= numChars) {
                curChar = 0;
                try {
                    numChars = stream.read(buf);
                } catch (IOException e) {
                    throw new InputMismatchException();
                }
                if (numChars <= 0) return -1;
            }
            return buf[curChar++];
        }

        boolean isSpaceChar(int c) {
            return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
        }

        boolean isEndline(int c) {
            return c == '\n' || c == '\r' || c == -1;
        }

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

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

        public double nextDouble() {
            return Double.parseDouble(next());
        }

        public String next() {
            int c = read();
            while (isSpaceChar(c)) c = read();
            StringBuilder res = new StringBuilder();
            do {
                res.appendCodePoint(c);
                c = read();
            } while (!isSpaceChar(c));
            return res.toString();
        }

        public String nextLine() {
            int c = read();
            while (isEndline(c))
                c = read();
            StringBuilder res = new StringBuilder();
            do {
                res.appendCodePoint(c);
                c = read();
            } while (!isEndline(c));
            return res.toString();
        }
    }
}
