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 sys
import io, os
input = sys.stdin.readline

n = int(input())

X = [-1]*10
# 0: 0
# 1: 1
# -1: -
# 2: ~
for i in range(n):
    c, x = map(str, input().split())
    x = int(x)
    if c == '&':
        for j in range(10):
            if not (x & (1 << j)):
                X[j] = 0
    elif c == '|':
        for j in range(10):
            if x & (1 << j):
                X[j] = 1
    else:
        for j in range(10):
            if x & (1 << j):
                if X[j] == -1:
                    X[j] = 2
                elif X[j] == 2:
                    X[j] = -1
                elif X[j] == 1:
                    X[j] = 0
                else:
                    X[j] = 1
a, b, c = 0, 0, 0
for i in range(10):
    if X[i] == -1:
        a |= (1<<i)
    elif X[i] == 2:
        a |= (1<<i)
        c |= (1<<i)
    elif X[i] == 1:
        b |= (1<<i)
print(3)
print('&', a)
print('|', b)
print('^', c)
