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.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.StringTokenizer;

public class ProblemD {

	static Scanner sc = new Scanner(System.in);
	static PrintWriter pw = new PrintWriter(System.out);

	public static void main(String[] args) throws IOException {
		int n = sc.nextInt();
		int a[] = new int[10];
		Arrays.fill(a, 3);
		// 0 = clear , 1 = set, 3 = x , 4 = comp(x)
		for (int i = 0; i < n; i++) {
			char c = sc.next().charAt(0);
			String s = Integer.toBinaryString(sc.nextInt());
			for (int j = 0; j < s.length(); j++) {
				int pos = 10 - s.length() + j;
				if (c == '&') {
					if (s.charAt(j) == '0')
						a[pos] = 0;
				} else if (c == '|') {
					if (s.charAt(j) == '1')
						a[pos] = 1;
				} else {
					if (s.charAt(j) == '1') {
						if (a[pos] == 3)
							a[pos] = 4;
						else if (a[pos] == 4)
							a[pos] = 3;
						else if (a[pos] == 1)
							a[pos] = 0;
						else
							a[pos] = 1;
					}
				}
			}
			for (int j = 0; j < 10 - s.length(); j++) {
				if (c == '&') {
					a[j] = 0;
				}
			}
		}
		StringBuilder and = new StringBuilder(), or = new StringBuilder(), xor = new StringBuilder();
		for (int i = 0; i < 10; i++) {
			if (a[i] == 0) {
				or.append(0);
				and.append(0);
				xor.append(0);
			} else if (a[i] == 1) {
				xor.append(0);
				or.append(1);
				and.append(1);
			} else if (a[i] == 4) {
				or.append(1);
				and.append(1);
				xor.append(1);
			} else {
				xor.append(0);
				or.append(0);
				and.append(1);
			}
		}
		pw.println(3);
//		 System.out.println(and);
//		 System.out.println(or);
//		 System.out.println(xor);
		pw.println("& " + Integer.parseInt(and.toString(), 2));
		pw.println("| " + Integer.parseInt(or.toString(), 2));
		pw.println("^ " + Integer.parseInt(xor.toString(), 2));

		pw.flush();
	}

	static class Scanner {
		StringTokenizer st;
		BufferedReader br;

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

		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());
		}
	}
}