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.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.*;

public class C {


    public static void main(String[] args) {

        MyScanner in = new MyScanner();
        PrintWriter out = new PrintWriter(System.out);

        int n = in.nextInt();

        int allSet = 1023;
        int zero = 0;

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

            if("&".equals(command)){
                allSet &= x;
//                out.println(allSet);
                zero &= x;
            }

            if("^".equals(command)){
                allSet ^= x;
                zero ^= x;
            }

            if("|".equals(command)){
                allSet |= x;
                zero |= x;
            }
        }

        int orBits = 0;
        int xorBits = 0;
        int andBits = 1023;

        int commandCount = 1;
        boolean useAnd = false;
        boolean useXor = false;

        for(int i=0;i<10;++i){
            if((allSet&(1<<i))!=0 && (zero&(1<<i))!=0){
                orBits|=1<<i;
            }

            if((allSet&(1<<i))==0 && (zero&(1<<i))!=0){
                useXor = true;
                xorBits|=1<<i;
            }

            if((allSet&(1<<i))==0 && (zero&(1<<i))==0){
//                out.println(allSet+" "+i);
                useAnd = true;
                andBits|=1<<i;
            }
        }

        if(useAnd){
            commandCount++;
        }
        if(useXor){
            commandCount++;
        }


        out.println(commandCount);
        if(useXor) {
            out.println("^ " + xorBits);
        }
        if(useAnd) {
            out.println("& " + andBits);
        }
        out.println("| "+orBits);

        out.close();
    }

    // -----------MyScanner class for faster input----------
    public static class MyScanner {
        BufferedReader br;
        StringTokenizer st;

        public MyScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

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

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

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

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }

    }
    // --------------------------------------------------------

}