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(input())
bits0=[0]*10
bits1=[1]*10
b0=0
b1=1023
fname=['&','|','^']
f=[[[0,0],[0,1]],[[0,1],[1,1]],[[0,1],[1,0]]]
for i in range(n):
    s=input()
    e=str(bin(int(s[2:])))
    d=int(s[2:])
    if s[0]=='^':
        b0=b0^d
        b1 = b1 ^ d
    elif s[0]=='|':
        b0=b0|d
        b1 = b1 | d
    elif s[0]=='&':
        b0=b0&d
        b1 = b1 & d
for j in range(10):
    bits0[9-j]=b0%2
    b0=b0//2
    bits1[9 - j] = b1 % 2
    b1 = b1 // 2
c=[[0]*10,[0]*10,[1]*10]
for j in range(10):
    if bits0[j]==bits1[j]:
        if bits0[j]==0:
            c[2][j]=0
        else:
            c[1][j]=1
    else:
        if bits0[j]==1:
            c[0][j]=1
print(3)
c0,c1,c2=[0,0,0]
for i in range(10):
    c0+=c[0][i]*(2**(9-i))
    c1 += c[1][i] * (2 ** (9 - i))
    c2 += c[2][i] * (2 ** (9 - i))
print("^ "+str(c0))
print("| "+str(c1))
print("& "+str(c2))