Rating:
# TokyoWesterns - `easy_hash` (75pt / 226 solves)
We are provided with the source code:
```python
import struct
import 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('
