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

// practice with kaiboy
import java.io.*;
import java.util.*;

public class CF879C extends PrintWriter {
	CF879C() { super(System.out); }
	Scanner sc = new Scanner(System.in);
	public static void main(String[] $) {
		CF879C o = new CF879C(); o.main(); o.flush();
	}

	void main() {
		int n = sc.nextInt();
		char[] op = new char[n];
		int[] aa = new int[n];
		for (int i = 0; i < n; i++) {
			op[i] = sc.next().charAt(0);
			aa[i] = sc.nextInt();
		}
		int o = 0, x = 0;
		for (int b = 1; b < 1024; b <<= 1) {
			boolean fixed = false;
			int a = 0;
			for (int i = 0; i < n; i++) {
				boolean one = (aa[i] & b) != 0;
				if (op[i] == '&') {
					if (!one) {
						fixed = true;
						a = 0;
					}
				} else if (op[i] == '|') {
					if (one) {
						fixed = true;
						a = 1;
					}
				} else {
					if (one)
						a ^= 1;
				}
			}
			if (fixed) {
				o |= b;
				if (a == 0)
					x |= b;
			} else {
				if (a == 1)
					x |= b;
			}
		}
		println(2);
		println("| " + o);
		println("^ " + x);
	}
}
