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.Arrays;
import java.util.StringTokenizer;

public class A {
	
	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[] ans = new int[10];
		Arrays.fill(ans, -1);
		for(int i = 0; i < n; i++)
		{
			char op = sc.nextChar();
			int x = sc.nextInt();
			for(int j = 0; j < 10; j++)
			{
				int bit = ((1 << j) & x) == 0? 0 : 1;
				if(op == '&' && bit == 0)
					ans[j] = 0;
				if(op == '|' && bit == 1)
					ans[j] = 1;
				if(op == '^' && bit == 1)
					if(ans[j] == 2) ans[j] = -1;
					else if(ans[j] == -1) ans[j] = 2;
					else ans[j] ^= 1; 
			}
		}
		int and = 1023, or = 0, xor = 0;
		for(int i = 0; i < 10; i++)
			if(ans[i] == 0)
				and &= ~(1 << i);
			else if(ans[i] == 1)
				or |= (1 << i);
			else if(ans[i] == 2)
				xor |= (1 << i);
		
		out.println(3);
		out.println("& " + and);
		out.println("| " + or);
		out.println("^ " + xor);
		out.flush();
		out.close();
	}
	
	static class Scanner 
	{
		StringTokenizer st;
		BufferedReader br;

		Scanner(InputStream system) {br = new BufferedReader(new InputStreamReader(system));}
		Scanner(String file) throws FileNotFoundException {br = new BufferedReader(new FileReader(file));}
		String next() throws IOException 
		{
			while (st == null || !st.hasMoreTokens()) 
				st = new StringTokenizer(br.readLine());
			return st.nextToken();
		}
		String nextLine()throws IOException{return br.readLine();}
		int nextInt() throws IOException {return Integer.parseInt(next());}
		double nextDouble() throws IOException {return Double.parseDouble(next());}
		char nextChar()throws IOException{return next().charAt(0);}
		Long nextLong()throws IOException{return Long.parseLong(next());}
		boolean ready() throws IOException{return br.ready();}
		void waitForInput(){for(long i = 0; i < 3e9; i++);}
	}
}