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

n = int(raw_input())
import operator
s1 = 1023
s2 = 0
operations = {'&': operator.and_, '|': operator.or_, '^':operator.xor}
for i in range(n):
    a, b = raw_input().split(' ')
    s1 = operations[a](s1, int(b))
    s2 = operations[a](s2, int(b))
s1 = format(s1, '010b')
s2 = format(s2, '010b')
ops = {'&': ['1' for i in range(10)],'^':['0' for i in range(10)],'|':['0' for i in range(10)]}
for i in range(10):
    if s1[i] == s2[i]:
        if s1[i] == '1':
            ops['|'][i] = '1'
        else:
            ops['&'][i] = '0'
    else:
        if s1[i] == '0': 
            ops['^'] = '1'
a, b, c = ''.join( ops['&'] ), ''.join( ops['^'] ),''.join( ops['|'] )
a = int(a,2)
b = int(b,2)
c = int(c,2)
print 3
print '&' + ' ' + str(a)
print '^' + ' ' + str(b)
print '|' + ' ' + str(c)
