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

import queue

def readTuple():
    return input().split()
def readInts():
    return tuple(map(int, readTuple()))


def to_int(x):
    x=x[::-1]
    res = 0
    for i in x:
        res <<= 1
        res |= i
    return res

def solve():
    res = ['X']*10
    n, = readInts()
    a,b = 0, 1023
    for _ in range(n):
        char, num = readTuple()
        num = int(num)
        if char == '|':
            a |= num
            b |= num
        if char == '&':
            a &= num
            b &= num
        if char == '^':
            a ^= num
            b ^= num

    XOR, OR = [],[]
    for i in range(10):
        b1 = a&(1<<i)
        b2 = b&(1<<i)
        if b1 and b2:
            OR.append(1)
            XOR.append(0)
        if not b1 and not b2:
            OR.append(1)
            XOR.append(1)
        if b1 and not b2:
            OR.append(0)
            XOR.append(1)
        if not b1 and b2:
            OR.append(0)
            XOR.append(0)

    print(2)
    print(f"| {to_int(OR)}")
    print(f"^ {to_int(XOR)}")

if __name__ == '__main__':
    solve()

