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 sys, math


def main():
    ops = getops(sys.stdin)

    n1 = 0
    n2 = 1023
    for op in ops:
        n1 = calc(op, n1)
        n2 = calc(op, n2)

    if n2 == 1023 and n1 == 0:
        print(0)
    else:
        and_ = 1023
        or_ = 0
        xor_ = 0
        for i in range(10):
            b1 = n1 % 2
            b2 = n2 % 2
            n1 = n1 // 2
            n2 = n2 // 2
            if b1 == 1 and b2 == 1:
                or_ = or_ | 2**i
            elif b1 == 1 and b2 == 0:
                xor_ = xor_ | 2**i
            elif b1 == 0 and b2 == 0:
                and_ = and_ - 2**i

        print(3)
        print('&', and_)
        print('|', or_)
        print('^', xor_)


def getops(fh):
    n = int(fh.readline())
    ops = []
    for i in range(n):
        opi, numi = fh.readline().split()
        numi = int(numi)
        ops.append((opi, numi))

    return ops


def calc(op, res):
    opi, numi = op
    if opi == '|':
        res = res | numi
    elif opi == '&':
        res = res & numi
    else:
        res = res ^ numi
    return res


if __name__ == "__main__":
    main()
