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.InputStreamReader;
import java.util.Arrays;
import java.util.StringTokenizer;
import java.util.*;

public class C {

	
	public static void main(String[] args) {
		FastScanner in = new FastScanner();
		int n = in.nextInt();
		int bits[] = new int[5];
		boolean flipped[] = new boolean[5];
		Arrays.fill(bits, -1);
		for(int i = 0; i < n; i++)
		{
			char op = in.next().charAt(0);
			int num = in.nextInt();
			if(op == '|')
			{
				for(int j = 0; j < 5; j++)
				{
					if( (num & (1 << j)) != 0)//If the bit is on
					{
						bits[j] = 1;
					}
				}
			}
			else if(op == '&')
			{
				for(int j =0 ; j < 5; j++)
				{
					if( (num & (1<<j)) == 0)	//If the bit is off
					{
						bits[j] = 0;
					}
				}
			}
			else
			{
				for(int j = 0; j < 5; j++)
				{
					if( (num & (1<<j)) != 0)	//If the bit is on
					{
						if(bits[j] == 0) bits[j] = 1;
						else if(bits[j] == 1) bits[j] = 0;
						else flipped[j] = !flipped[j];
					}
				}
				
			}
			
		}
		
		//for(int i = 0; i < 5; i++)
		//	System.out.print(bits[i]+" ");
		//System.out.println();
		//for(int i = 0; i < 5; i++)
	//		System.out.print(flipped[i] ? "T " : "F ");
	//	System.out.println();
		
		int onBits =0;
		int offBits = 0;
		for(int i = 0; i < 5; i++)
		{
			if(bits[i] == 1) onBits++;
			else if(bits[i] == 0) offBits++;
		}

		
		//First do an OR with everything we need to change except flipped
		int or = 0;
		for(int i =0 ; i < 5; i++)
		{
			if(bits[i] == 0 ||bits[i] == 1)
				{
				or += (1 << i);
				//System.out.println("or: "+i);
				}
		}
		
		//Next do an x-or with what we need to flip
		int xor = 0;
		for(int i =0 ; i < 5; i++)
		{
			if(bits[i] == -1 && flipped[i] == true)
				{
				xor += (1 << i);
				//System.out.println("xor: "+i);

				}
		}
		
		//Now put the zeros in
		int zero = 0;
		for(int i = 0; i < 5; i++)
		{
			if(bits[i] == 0) continue;
			else {
				zero += (1 << i);
				//System.out.println("and: "+i);

			}
		}
		
		//if(onBits == 0 && offBits == 0) System.out.println(0);
		//else
		//{
			System.out.println(3);
			System.out.println("| "+or+"\n^ "+xor+"\n& "+zero);
		//}
	
		
		
		

		
		
		
	}

	
	
	public static class FastScanner
	{
		BufferedReader br;
		StringTokenizer st;

		public FastScanner(String s)
		{
			try {
				br = new BufferedReader(new FileReader(s));
			} catch (FileNotFoundException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}

		public FastScanner()
		{
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		String nextToken()
		{
			while (st == null || !st.hasMoreElements())
			{
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}

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

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

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

}
