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.InputStreamReader;

// Algo falla
public class C {

	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		
		int ones = 1023;
		int zeros = 0;
		
		int n = Integer.parseInt(br.readLine());
				
		for(int i=0; i<n; i++) {
			String[] l = br.readLine().split(" ");
			char c = l[0].charAt(0);
			int x = Integer.parseInt(l[1]);
			
			if(c == '^') {
				ones ^= x;
				zeros ^= x;
			}else if(c == '&') {
				ones &= x;
				zeros &= x;
			}else {
				ones |= x;
				zeros |= x;
			}			
		}
		
		int or = 0;
		int and = 1023;
		int xor = 0;
		for(int i=0; i<10; i++) {
			if((zeros&(1<<i)) != 0 && (ones&(1<<i)) != 0) {
				or |= (1<<i);
			}else if((zeros&(1<<i)) == 0 && (ones&(1<<i)) == 0) {
				and ^= (1<<i);
			}else if((zeros&(1<<i)) != 0) {
				xor |= (1<<i);
			}
		}
		
		System.out.println("3");
		System.out.println("| " + or);
		System.out.println("& " + and);
		System.out.println("^ " + xor);
	}

}
