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 app(out1, i, v2, c):
    if c == '|':
        out1[i] |= v2
    elif c == '&':
        out1[i] &= v2
    else:
        out1[i] ^= v2


n = input()
out1 = [0] * 10
out2 = [1] * 10
f = 0
for a0 in xrange(1, n + 1):
    c, v = raw_input().split()
    v = int(v)
    for i in xrange(10):
        p = 1 << i
        app(out1, i, p & v != 0, c)
        app(out2, i, p & v != 0, c)
#print out1, out2
xorp = 0
orp = 0
for i in xrange(10):
    if out1[i] == 1 and out2[i] == 0:
        xorp += 1 << i
    elif out1[i] == 1 and out2[i] == 1:
        orp += 1 << i
    elif out1[i] == 0 and out2[i] == 0:
        xorp += 1 << i
        orp += 1 << i
ans = []
if orp != 0:
    ans.append(('|', orp))
if xorp != 0:
    ans.append(('^', xorp))

print len(ans)
for c in ans:
    print c[0], c[1]
