Rust: Problem 8
Rust: Problem 9
Rust: Problem 10
Rust: Add version info
Scala: Problem 1
Scala: Problem 2
Scala: Problem 3
Scala: Problem 4
Scala: Problem 5
Scala: Problem 6
Scala: Problem 7
Scala: Problem 8
Scala: Problem 9
Scala: Problem 10
Scala: Add version info