Tags: reverse java
Rating: 1.0
Although at medium difficulty, this challenge isn't very complicated with some Java knowledge. The algorithm is simple enough, you can study the code yourself :P
```python
alphabet = 'abcdefghijklmnopqrstuvwxyz_!@'
flag = 'spbctf{'
seed = 5
for i in range(7, 23):
flag += alphabet[seed]
seed = seed * 3 % len(alphabet)
flag += '}'
print(flag)
```
Flag: `spbctf{fpqt@_ucgszrwiyo}`
