Week 8 - Graphs (4)

Question

The tasks for week 8 are as follows:

Week problem: 11101 Mall Mania
Weekend problem: 11367 Full Tank
Suggested bonus: 10557 XYZZY

Read up on shortest paths.

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.

Comments

Please post below which of the questions you have been able to finish.

For each task, please let us know how much time you have spent on understanding / coding / debugging.

For each task let us know what the hardest part was. (This can be anything, ranging from not having read the problem to forgetting about a border case, to a semicolon in the wrong spot that screwed up an if-statement...)