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.IOException;
import java.io.InputStream;
import java.util.InputMismatchException;

public class Main {
	public static void main(String[] args) {
		
		FastScanner input = new FastScanner(System.in);
		
		int N = input.nextInt();
		
		int[] cmd = new int[N];
		int[] arr = new int[N];
		
		int[] op = new int[3];
		
		for (int i = 0; i < N; i++) {
			cmd[i] = input.next().charAt(0);
			arr[i] = input.nextInt();
		}
		
		op[2] = 1023;
		
		for (int x = 1; x < 1024; x <<= 1) {
			int di = 0;
			int dj = 1;
			for (int i = 0; i < N; i++) {
				if (cmd[i] == '|') {
					di |= arr[i] % 2;
					dj |= arr[i] % 2;
				} else if (cmd[i] == '^') {
					di ^= arr[i] % 2;
					dj ^= arr[i] % 2;
				} else {
					di &= arr[i] % 2;
					dj &= arr[i] % 2;
				}
				arr[i] /= 2;
			}
			
			if (di == dj) {
				if (di == 1)
					op[1] += x;
				else
					op[2] -= x;
			} else if (di == 1)
				op[0] += x;
		}
		
		System.out.println(3);
		System.out.println("^ " + op[0]);
		System.out.println("| " + op[1]);
		System.out.println("& " + op[2]);
	}
	
	// Matt Fontaine's Fast IO
	static class FastScanner {
		private InputStream stream;
		private byte[] buf = new byte[1024];
		private int curChar;
		private int numChars;

		public FastScanner(InputStream stream) {
			this.stream = stream;
		}

		int read() {
			if (numChars == -1)
				throw new InputMismatchException();
			if (curChar >= numChars) {
				curChar = 0;
				try {
					numChars = stream.read(buf);
				} catch (IOException e) {
					throw new InputMismatchException();
				}
				if (numChars <= 0)
					return -1;
			}
			return buf[curChar++];
		}

		boolean isSpaceChar(int c) {
			return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
		}

		boolean isEndline(int c) {
			return c == '\n' || c == '\r' || c == -1;
		}

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

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

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

		String next() {
			int c = read();
			while (isSpaceChar(c))
				c = read();
			StringBuilder res = new StringBuilder();
			do {
				res.appendCodePoint(c);
				c = read();
			} while (!isSpaceChar(c));
			return res.toString();
		}

		String nextLine() {
			int c = read();
			while (isEndline(c))
				c = read();
			StringBuilder res = new StringBuilder();
			do {
				res.appendCodePoint(c);
				c = read();
			} while (!isEndline(c));
			return res.toString();
		}
	}
}
