def main():
    inp = raw_input()
    n = len( inp )
#   k = n - 3
    k = n
    pol = 0xEDB88320
    n = (n - k)
    c = raw_input()
    c2 = raw_input()
    c = c ^ c2
    p2 = (pol << 1) | 1
    while ( n < 3 ):
        if (c & 0x80000000):
            c = (c << 1) ^ p2
        else :
            c <<= 1
        n += 1
        print ("XOR masks:%02X%02X%02X%02X\n", c & 0xff, (c >> 8) & 0xff,(c >> 16) & 0xff, c >> 24)
    return 0

if __name__ == '__main__':
    main()