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

def fun (n1,o,n2):
    if o=="|":
        return n1|n2
    elif o=="&":
        return n1&n2
    else:
        return n1^n2
def fun2(n):
    l=[0 for i in range(10)]
    for i in range(9,-1,-1):
        if 1<<i <=n:
            l[i]=1
            n-=1<<i
    return l
n=int(input())
a=0
b=1023
for i in range(n):
    o,n2=input().split()
    n2=int(n2)
    a=fun(a,o,n2)
    b=fun(b,o,n2)
l1=fun2(a)
l2=fun2(b)
a=0
b=0
for i in range(10):
    if l1[i]==1 and l2[i]==1:
        a+=1<<i
    elif l1[i]==0 and l2[i]==0:
        a+=1<<i
        b+=1<<i
    elif l1[i]==1 and l2[i]==0:
        b+=1<<i
print(2)
print("|",a)
print("^",b)
    
    
            
