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 doOr(num):
  for i in xrange(10):
    if num[i]=='1':
      arr[i]=2

def doAnd(num):
  for i in xrange(10):
    if num[i]=='0':
      arr[i]=1

def doXor(num):
  for i in xrange(10):
    if num[i]=='1':
      arr[i]^=3

arr = [0]*10
for i in xrange(input()):
  op, num = raw_input().strip().split()
  num = bin(int(num))[2:].zfill(10)
  if op=='|':
    doOr(num)
  elif op=='&':
    doAnd(num)
  elif op=='^':
    doXor(num)

ansor = 0
ansand = 0
ansxor = 0
for i in arr:
  ansor*=2
  ansand*=2
  ansxor*=2
  ansand+=1
  if i==1:
  	ansand-=1
  elif i==2:
  	ansor+=1
  elif i==3:
  	ansxor+=1
ans = int(ansor!=0)+int(ansand!=1023)+int(ansxor!=0)
print ans
if ansor!=0:
	print "|", ansor
if ansand!=1023:
	print "&", ansand
if ansxor!=0:
	print "^", ansxor