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.io.PrintWriter;
import java.util.LinkedList;
import java.util.Queue;
import java.util.StringTokenizer;

public class P {

	// PURPLE TO BE

	static int getOP(char x) {
		switch (x) {
		case '&':
			return 0;
		case '|':
			return 1;
		case '^':
			return 2;
		}
		return -1;
	}

	public static void main(String[] args) throws IOException {

		Scanner sc = new Scanner(System.in);
		PrintWriter out = new PrintWriter(System.out);
		int N = sc.nextInt();
		int[] op = new int[N], x = new int[N];
		for (int i = 0; i < N; ++i) {
			op[i] = getOP(sc.next().charAt(0));
			x[i] = sc.nextInt();
		}
		int x_and = 0, x_or = 0, x_xor = 0;
		// TODO: check status of each bit
		for (int i = 0; i < 10; ++i) {
			int o = 1, z = 0;
			for (int j = 0; j < N; ++j) {
				int curBit = (x[j] & (1 << i)) != 0 ? 1 : 0;
				if (op[j] == 0) {
					// AND
					z &= curBit;
					o &= curBit;
				} else if (op[j] == 1) {
					// OR
					z |= curBit;
					o |= curBit;
				} else {
					// XOR
					z ^= curBit;
					o ^= curBit;
				}
			}

			if (z == 1 && o == 1)
				x_or |= (1 << i);

			if (z == 1 && o == 0) {
				x_and |= (1 << i);
				x_xor |= (1 << i);
			}
			if (z == 0 && o == 1) {
				x_and |= (1 << i);
			}
			if (z == 0 && o == 0) {
				// trivial case
			}
		}

		out.println(3);
		out.println("& " + x_and);
		out.println("| " + x_or);
		out.println("^ " + x_xor);
		out.flush();
		out.close();
	}

	static class Scanner {
		StringTokenizer st;
		BufferedReader br;

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

		public Scanner(String file) throws FileNotFoundException {
			br = new BufferedReader(new FileReader(file));
		}

		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());
		}
	}

}