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(raw_input())
AND = 1023
XOR = 0
OR = 0

ors = []
xors = []
ands = []

for _ in xrange(n):
	op, num = raw_input().split()
	num = int(num)
	if op == '|':
		ors.append(num)
	elif op == '&':
		ands.append(num)
	elif op == '^':
		xors.append(num)

for x in ands:
	AND &= x
for x in ors:
	OR |= x
for x in xors:
	XOR ^= x

ans = []
if len(ors) > 0:
	ans.append("| {0}".format(OR))
if len(ands) > 0:
	ans.append("& {0}".format(AND))
if len(xors) > 0:
	ans.append("^ {0}".format(XOR))

print len(ans)
for s in ans:
	print(s)
