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;
import java.util.*;

public class Main {

    public static void main(String[] args) {
        MyScanner in = new MyScanner();

        int n = in.nextInt();

        int bits0 = 0;
        int bits1 = (1 << 10) - 1;

        for (int i = 0; i < n; i++) {
            char op = in.next().charAt(0);
            int num = in.nextInt();

            switch (op) {
                case '|':
                    bits0 |= num;
                    bits1 |= num;
                    break;
                case '&':
                    bits0 &= num;
                    bits1 &= num;
                    break;
                case '^':
                    bits0 ^= num;
                    bits1 ^= num;
                    break;
            }
        }

        int or = 0, and = (1 << 10) - 1, xor = 0;

        for (int i = 0; i < 10; i++) {
            int bit = 1 << i;

            if ((bits0 & bit) > 0 && (bits1 & bit) > 0)
                or |= bit;
            else if ((bits0 & bit) == 0 && (bits1 & bit) == 0)
                and &= ~bit;
            else if ((bits0 & bit) > 0 && (bits1 & bit) == 0)
                xor |= bit;
        }

        System.out.println(3);
        System.out.println("| " + or);
        System.out.println("& " + and);
        System.out.println("^ " + xor);
    }

    public static class MyScanner {
        BufferedReader br;
        StringTokenizer st;

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

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

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