Tristo mietitore is part of a suite of tools I wrote (https://github.com/mapio/see-you, and https://github.com/mapio/see-you-viewer) that can be used to setup and run a programming class in which students get (almost) realtime automatic evaluations of their solutions to exercises.

Give a look at my today's lecture results https://santini.di.unimi.it/tmp/labprog/laboratorio_01/resul...

Using this software the teacher can have a valuable feedback on what exercises the students find easy, or difficult and, on the other hand, students become very competitive and get more productive than usual!

[The exercises texts, unfortunately in Italian only, are available here https://github.com/mapio/labprog-infomus]