If you cannot find the source file
File -> project structure -> select JAVA 17 as your JDK -> apply -> create an out file in “course-project-whatever-you-want” and indicate it as the file project compiler output to -> modules -> click “+” sign -> import module -> select “course-project-whatever-you-want” -> next all the way until finish -> apply -> ok
Notes:
Please avoid typo when running the program
If the program crashes, please run again and enter only regular inputs
“{1=CS Introduction Series}” indicates that the id of the Tech Tree “CS Introduction Series” is “1”. Enter the id “1” to select the Tech Tree.