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() )

first = True
A = 0
O = 0
X = 0

for i in range( n ):
	s, d = input().split()
	d = int( d )
	
	if s == '|':
		O |= d
	elif s == '&':
		if first == True:
			A = d
			first = False
		else:
			A &= d
	elif s == '^':
		X ^= d
		
	#print( s, d )
	
ans = []

if A:
	ans.append( ('&', A) )

if O:
	ans.append( ('|', O) )

if X:
	ans.append( ('^', X) )
#print( A, O, X )

print( len(ans) )

for i in range( len(ans) ):
	print( ans[i][0] + " " + str(ans[i][1]) )