Solution for HighLoadCup: Stack: SBT 1.0.1 Scala 2.12.3 Akka 2.4.19 Akka HTTP 10.0.10 Spray-JSON 1.3.3 Slick 3.2.1 HSQLDB 2.4.0 HikariCP 2.7.1 MacWire 2.3.0