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.ArrayList;
import java.util.Scanner;

/**
 * @author Jaseem
 */
public class ShortProgram {
    char [] operations;
    int [] constants;
    ArrayList<Character> resultOperations;
    ArrayList<Integer>  resultConstants;
    int n;
    int operate(int input){
        for(int i=0; i<n;i++){
            switch (operations[i]){
                case '|': input=input|constants[i]; break;
                case '^':input=input^constants[i]; break;
                case '&':input=input&constants[i];break;
            }
        }
        return input;
    }
    void solve(){
        int outputForZero=operate(0);
        int outputForOnes=operate(1023);
        resultConstants=new ArrayList<>();
        resultOperations=new ArrayList<>();
        int or=0;
        int xor=0;
        int and=1023;
        for(int i=0;i<10;i++){
            if((outputForZero&(1<<i))==0 && (outputForOnes&(1<<i))==0){
                and=and^(1<<i);
            }
            else if((outputForZero&(1<<i))!=0 && (outputForOnes&(1<<i))==0){
                //xor 1
                xor=xor^(1<<i);
            }
            else if((outputForZero&(1<<i))!=0 && (outputForOnes&(1<<i))!=0){
                //or 1
                or=or^(1<<i);
            }
        }
        if(and!=1023){
            resultOperations.add('&');
            resultConstants.add(and);
        }
        if(or!=0){
            resultOperations.add('|');
            resultConstants.add(or);
        }
         if(xor!=0){
            resultOperations.add('^');
            resultConstants.add(xor);
        }
    }
    void print(){
        System.out.println(resultConstants.size());
        for(int i=0;i<resultConstants.size();i++){
            System.out.println(resultOperations.get(i)+" "+resultConstants.get(i));
        }
    }
    public static void main(String[] args) {
        ShortProgram shortProgram=new ShortProgram();
        Scanner reader=new Scanner(System.in);
        int n=reader.nextInt();
        shortProgram.n=n;
        shortProgram.operations=new char[n];
        shortProgram.constants=new int[n];
        for(int i=0;i<n;i++){
            shortProgram.operations[i]=reader.next().charAt(0);
            shortProgram.constants[i]=reader.nextInt();
        }
        shortProgram.solve();
        shortProgram.print();
    }
}
