HOW TO BUILD PROJECT WITH INTELLIJ IDEA :

Download IntelliJ IDEA (Community version) : https://www.jetbrains.com/idea/download/
Download Choco Solver library (v2.1.2) : https://drive.google.com/open?id=1lCcYi394EOVzCMezWWKTBXHzQEq4SCLh

Step :

Install IntelliJ IDEA Community
Extract the Choco Solver library
Clone the project
Open with IntelliJ IDEA
Open File > Project Structure > Modules > Dependencies
Alt + Insert > Choose JARs or directories...
Choose the Choco Solver library (v2.1.2) folder
Alt + Insert > Choose JARs or directories...
Choose the mysql-connector-java in the library folder of project
Alt + Insert > Choose JARs or directories...
Choose the apache-poi folder in the library folder of project
Apply
Run the project