Rating:
```python=
def decrypt(enc):
flag = ""
for i in range(34):
v = ((enc[i] << 5) | (enc[i] >> 3)) & 0xFF
v = (v - i) & 0xFF
flag += chr(v ^ 0x5A)
return flag
enc = [0xF8, 0xA8, 0xB8, 0x21, 0x60, 0x73, 0x90, 0x83, 0x80, 0xC3,
0x9B, 0x80, 0xAB, 0x09, 0x59, 0xD3, 0x21, 0xD3, 0xDB, 0xD8,
0xFB, 0x49, 0x99, 0xE0, 0x79, 0x3C, 0x4C, 0x49, 0x2C, 0x29,
0xCC, 0xD4, 0xDC, 0x42]
print(decrypt(enc))
```
