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

from sys import stdin
rr = lambda: stdin.readline().strip()
rri = lambda: int(rr())
rrm = lambda: map(int, rr().split())
def rry(N = None, f = rri):
    for i in xrange(N or rri()):
        yield f()

debug=0
if debug:
    fi = open('t.txt','r')
    rr = lambda: fi.readline().replace('\n','')

import operator
N = rri()
commands = []
for _ in xrange(N):
    a, b = rr().split()
    if a == '|': c = operator.or_
    elif a == '^': c = operator.xor
    elif a == '&': c = operator.and_
    commands.append((c, int(b)))

global_and = 2**10 - 1
global_or = 0
global_xor = 0

for bit in xrange(10):
    r0, r1 = 0, 1
    for cmd, x in commands:
        b = (x >> bit) & 1
        r0 = cmd(r0, b)
        r1 = cmd(r1, b)
    if (r0, r1) == (0, 1):
        continue
    elif (r0, r1) == (1, 1):
        #or 1
        global_or |= 1 << bit
    elif (r0, r1) == (0, 0):
        global_and ^= 1<<bit
        assert ((global_and >> bit) & 1) == 0
    elif (r0, r1) == (1, 0):
        global_xor ^= 1<<bit
        assert ((global_xor >> bit) & 1) == 1

print 3
print '|', global_or
print '^', global_xor
print '&', global_and