The tasks for week 9 are as follows:
Week problem: 00820 Internet Bandwidth
Weekend problem: 10480 Sabotage
Suggested bonus: 10594 Data Flow
Read up on maximum flow.
You must submit your solutions on http://uva.onlinejudge.org/
You can browse to these problems from the online judge website by clicking on Browse Problems, Contest Volumes, and then selecting the contest volume as indicated above.