from sys import argv, exit
from binascii import crc32

if len(argv) < 1:
    print("Please tell me which file.")
    exit(1)

contents = open(argv[1], "rb").read()
checksum = hex(crc32(contents[:-4]))

for x in range(len(checksum) // 2 - 1):
    if x > 0:
        print(checksum[-x * 2 - 2:-x * 2].upper(), end=" ")
    else:
        print(checksum[-2:].upper(), end=" ")
print()