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

public class CF

{

	
	static int construct(ArrayList<Integer> a) {
		int num = 0;
		for (int i = 0 ; i < a.size() ; ++i) {
			num |= (1 << a.get(i));
		}
		return num;
	}
	public static void main(String[]args)throws Throwable
	{
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int one[] = new int[10];
		int zero[] = new int[10];
		for(int i = 0 ; i < n ; ++i) {
			String op = sc.next();
			int num = sc.nextInt();
			if(op.equals("+")) {
				for(int j = 0 ; j < 10 ; ++j) {
					zero[j] &= (num & (1 << j)) > 0 ? 1 : 0;
					one[j] &= (num & (1 << j)) > 0 ? 1 : 0;

				}
			}
			if(op.equals("-")) {
				for(int j = 0 ; j < 10 ; ++j) {
					zero[j] |= (num & (1 << j)) > 0 ? 1 : 0;
					one[j] |= (num & (1 << j)) > 0 ? 1 : 0;

				}
			}
			if(op.equals("^")) {
				for(int j = 0 ; j < 10 ; ++j) {
					zero[j] ^= (num & (1 << j)) > 0 ? 1 : 0;
					one[j] ^= (num & (1 << j)) > 0 ? 1 : 0;

				}
			}
		}
		ArrayList<Integer> or = new ArrayList();
		ArrayList<Integer> and = new ArrayList();
		ArrayList<Integer> xor = new ArrayList();

		for(int i = 0 ; i < 8 ; ++i) {
			if(zero[i] == 0 && one[i] == 0) {
				and.add(i);
			}
			if(zero[i] == 1 && one[i] == 1) {
				or.add(i);
			}
			if(zero[i] == 1 && one[i] == 0 ) {
				xor.add(i);
			}
//		}
		}
		System.out.println("3");
		System.out.printf("& %d\n",construct(and));
		System.out.printf("^ %d\n",construct(xor));
		System.out.printf("| %d\n",construct(or));
	




	}

	static class Scanner
	{
		BufferedReader br;
		StringTokenizer st;


		Scanner(InputStream s)  { br = new BufferedReader(new InputStreamReader(s)); }
		public Scanner(String s) throws FileNotFoundException{	br = new BufferedReader(new FileReader(s));}


		String next() throws IOException
		{

			while(st == null || !st.hasMoreTokens())
				st = new StringTokenizer(br.readLine());
			return st.nextToken();

		}
		int nextInt() throws NumberFormatException, IOException { return Integer.parseInt(next()); }
		long nextLong() throws NumberFormatException, IOException { return Long.parseLong(next()); }




	}

}