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

//package CF;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.StringTokenizer;

public class A {

	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		PrintWriter out = new PrintWriter(System.out);
		int n = sc.nextInt();
		int [] on = new int[10]; // 1: on, 2: off
		boolean [] sw = new boolean[10];
		while(n-->0){
			char c = sc.next().charAt(0);
			int x = sc.nextInt();
			for (int i = 0; i < 10; i++) {
				if((x & (1<<i)) != 0)
				{
					if(c == '|'){
						on[i] = 1;
						sw[i] = false;
					}
					else if(c == '^'){
						if(on[i] == 0)
							sw[i] ^= true;
						else if(on[i] == 1)
							on[i] = 2;
						else on[i] = 1;
					}
				}
				else{
					if(c == '&'){
						on[i] = 2;
						sw[i] = false;
					}
				}
			}
		}
		ArrayList<String> com = new ArrayList<>();
		int ans = 0;
		for (int i = 0; i < on.length; i++) {
			ans |= on[i] == 1?1<<i:0; 
		}
		com.add("| " + ans);
		ans = 0;
		for (int i = 0; i < on.length; i++) {
			ans |= on[i] == 2?0:1<<i; 
		}
		com.add("& " + ans);
		ans = 0;
		for (int i = 0; i < sw.length; i++) {
			ans |= sw[i]?1<<i:0;
		}
		com.add("^ " + ans);
		out.println(com.size());
		for(String s:com)
			out.println(s);
		out.flush();
		out.close();
	}

	static class Scanner {
		StringTokenizer st;
		BufferedReader br;

		public Scanner(InputStream s) {
			br = new BufferedReader(new InputStreamReader(s));
		}

		public Scanner(FileReader fileReader) {
			br = new BufferedReader(fileReader);
		}

		public String next() throws IOException {
			while (st == null || !st.hasMoreTokens())
				st = new StringTokenizer(br.readLine());
			return st.nextToken();
		}

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

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

		public String nextLine() throws IOException {
			return br.readLine();
		}

		public boolean ready() throws IOException {
			return br.ready();
		}
	}
}