Proposed Approach: Mixed Integer Programming, BigM, and MTZ to remove sub tour.
Proposed mathematical model has been tested for 100 customers and 1000 customers ("Cluster and Route Approach")
Obtained results are for 25 customers. Please check img folder.
Please check LP folder for LP file.
Solution time: just 5 minutes (without using multi threading/parallel processing)
Both unit test and manual validation of result has been used.