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 = input()
num = ['x']*10

def norm(s):
    if len(s)<10:
        s = (10-len(s))*'0' + s
    return s

def conv(x):
    ans = 0
    for i in range(9,-1,-1):
        ans += (int(x[i])*(2**(9-i)))
    return ans

def op_and(num,s):
    for i in range(10):
        if s[i]=='0':
            num[i] = '0'
    return num

def op_or(num,s):
    for i in range(10):
        if s[i]=='1':
            num[i] = '1'
    return num

def op_xor(num,s):
    for i in range(10):
        if s[i]=='1':
            if num[i]=='1': num[i] = '0'
            elif num[i]=='0': num[i] = '1'
            elif num[i]=='x': num[i] = '-x'
            elif num[i]=='-x': num[i] = 'x'
        else:
            if num[i]=='1': num[i] = '1'
            elif num[i]=='0': num[i] = '0'
    return num

for x in range(n):
    a,b = raw_input().strip().split()
    b = int(b)
    b = bin(b)[2:]
    b = list(norm(b))
    if a=='^':
        num = op_xor(num,b)
    elif a=='|':
        num = op_or(num,b)
    elif a=='&':
        num = op_and(num,b)
    #print num

xor = ['0']*10
oor = ['0']*10
aand = ['1']*10
for i in range(10):
    if num[i]=='-x':
        xor[i]='1'
    elif num[i]=='1':
        oor[i] = '1'
    elif num[i]=='0':
        aand[i]='0'
#print num
print 3
print "^",conv(xor)
print '|',conv(oor)
print '&',conv(aand)