# TokyoWesterns - `easy_hash` (75pt / 226 solves)
We are provided with the source code:
```pythonimport structimport os
MSG = b'twctf: please give me the flag of 2020'
assert os.environ['FLAG']
def easy_hash(x):    m = 0    for i in range(len(x) - 3):        m += struct.unpack('