Introduction - If you have any usage issues, please Google them yourself
Problem description : decomposition of a project known as 11 sub-projects (P1, P2, ..., P11), each for the project, each of the sub-projects and projects with a total of the relationship between, as shown in Fig. Now the project wants to shorten the overall project, who asked to shorten the time limit for the project can be achieved to reduce the total time limit of the target?