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.*;
import java.io.*;
import java.math.*;
public class Main
{
    static class Reader 
    { 
        private InputStream mIs;private byte[] buf = new byte[1024];private int curChar,numChars;public Reader() { this(System.in); }public Reader(InputStream is) { mIs = is;} 
        public int read() {if (numChars == -1) throw new InputMismatchException();if (curChar >= numChars) {curChar = 0;try { numChars = mIs.read(buf);} catch (IOException e) { throw new InputMismatchException();}if (numChars <= 0) return -1; }return buf[curChar++];} 
        public String nextLine(){int c = read();while (isSpaceChar(c)) c = read();StringBuilder res = new StringBuilder();do {res.appendCodePoint(c);c = read();}while (!isEndOfLine(c));return res.toString() ;} 
        public String s(){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 long l(){int c = read();while (isSpaceChar(c)) c = read();int sgn = 1;if (c == '-') { sgn = -1 ; c = read() ; }long res = 0; do{ if (c < '0' || c > '9') throw new InputMismatchException();res *= 10 ; res += c - '0' ; c = read();}while(!isSpaceChar(c));return res * sgn;} 
        public int i(){int c = read() ;while (isSpaceChar(c)) c = read();int sgn = 1;if (c == '-') { sgn = -1 ; c = read() ; }int res = 0;do{if (c < '0' || c > '9') throw new InputMismatchException();res *= 10 ; res += c - '0' ; c = read() ;}while(!isSpaceChar(c));return res * sgn;} 
        public double d() throws IOException {return Double.parseDouble(s()) ;}
        public boolean isSpaceChar(int c) { return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1; } 
        public boolean isEndOfLine(int c) { return c == '\n' || c == '\r' || c == -1; } 
        public int[] arr(int n){int[] ret = new int[n];for (int i = 0; i < n; i++) {ret[i] = i();}return ret;}
    }
    
    
 
           //       |----|       /\      |    |   -----   |
           //       |   /       /  \     |    |     |     |
           //       |--/       /----\    |----|     |     |
           //       |   \     /      \   |    |     |     |
           //       |    \   /        \  |    |   -----   -------
    
    public static void main(String[] args)throws IOException
    {
        Reader sc=new Reader();
        PrintWriter out=new PrintWriter(System.out);
        int n=sc.i();
        char arr[]=new char[n];
        int num[]=new int[n];
        for(int i=0;i<n;i++)
        {
            arr[i]=sc.s().charAt(0);
            num[i]=sc.i();
        }
        int ans[]=new int[11];
        int and=(1<<10)-1,or=0,xor=0;
        for(int ii=0;ii<10;ii++)
        {
            int result1=1;
            int result2=0;
            for(int i=0;i<n;i++)
            {
                if(arr[i]=='&')
                {
                    result1&=(((1<<ii)&num[i])>=1?1:0);
                    result2&=(((1<<ii)&num[i])>=1?1:0);
                }
                else if(arr[i]=='|')
                {
                    result1|=(((1<<ii)&num[i])>=1?1:0);
                    result2|=(((1<<ii)&num[i])>=1?1:0);
                }
                else
                {
                    result1^=(((1<<ii)&num[i])>=1?1:0);
                    result2^=(((1<<ii)&num[i])>=1?1:0);
                }
            }
            //System.out.println(ii+" "+result1+" "+result2);
            if(result1==0&&result2==0)
            and-=(1<<ii);
            else if(result1==1&&result2==1)
            or+=(1<<ii);
            else if(result1==0&&result2==1)
            xor+=(1<<ii);
        }
        if(xor!=0)out.println(3);
        else out.println(2);
        out.println("& "+and);
        out.println("| "+or);
        if(xor!=0)
        out.println("^ "+xor);
        out.flush();
    }
}