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.util.*;

public class Main {
    public static void main(String[] arg) {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();

        int or = 0;
        int xor = 0;
        int and = 1023;

        for(int i = 0; i < n; i++){
            String command = scan.next();
            int val = scan.nextInt();

            if(command.equals("|")){
                or |= val;
                and |= val;
                xor &= ~val;
            }else if(command.equals("&")){
                and &= val;
                xor &= val;
            }else{
                xor ^= val;
            }
        }

        System.out.println(3);
        System.out.println("| " + or);
        System.out.println("& " + and);
        System.out.println("^ " + xor);
    }
}