that's computer science 😄
https://wiki.maud.io/ja/mastodon/slangs#%E3%82%B3%E3%83%B3%E3%83%94%E3%83%A5%E3%83%BC%E3%82%BF%E3%83%BC%E3%82%B5%E3%82%A4%E3%82%A8%E3%83%B3%E3%82%B9-computer-science
