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 execute(prg, n):
	for op, x in prg:
		if op == "|":
			n |= x
		elif op == "&":
			n &= x
		elif op == "^":
			n ^= x
	return n
n = int(input())
prg = []
for i in range(n):
	op, x = map(str, input().split())
	x = int(x)
	prg.append((op, x))
zeroes = execute(prg, 0)
ones = execute(prg, 1023)
orx, andx, xorx = 0, 0, 0
for i in range(10):
	bit = 1 << i
	if zeroes & bit == 0 and ones & bit == 0:
		pass
	elif zeroes & bit == 0 and ones & bit != 0:
		andx |= bit
	elif zeroes & bit != 0 and ones & bit == 0:
		xorx |= bit
		andx |= bit
	elif zeroes & bit != 0 and ones & bit != 0:
		orx |= bit
		andx |= bit
print(3)
print("|", orx)
print("&", andx)
print("^", xorx)