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())
stack = []
for i in range(n):
    com = list(map(str, input().split()))
    c, x = com[0], int(com[1])
    if stack:
        if c == '&':
            stack[-1] &= x
        else:
            stack.append(c)
            stack.append(x)
    else:
        stack.append(c)
        stack.append(x)

from collections import defaultdict
d = defaultdict(lambda:[])
m = len(stack)
for i in range(m//2):
    c = stack[2*i]
    x = stack[2*i+1]
    d[c].append(x)

ans = []
if d['&']:
    l = d['&']
    t = l[0]
    for j in range(1, len(l)):
        t &= l[j]
    ans.append(('&', t))

if d['|']:
    l = d['|']
    t = l[0]
    for j in range(1, len(l)):
        t |= l[j]
    ans.append(('|', t))

if d['^']:
    l = d['^']
    t = l[0]
    for j in range(1, len(l)):
        t ^= l[j]
    ans.append(('^', t))

print(len(ans))
for i in range(len(ans)):
    print(*ans[i])
