# Can you solve these 5 simple network problems?

Creating and solving mathematical programming assignments and exercises in PIFOP just got easier with the new reset-answer and answer terminal commands.

In order to demonstrate one of the ways you can use this new feature, I have created a simple challenge that I invite you to try to solve.

## Demo Challenge: Solve these 5 network problems

The challenge consists of a series of 5 network optimization problems that you have solve for a given instance. The data will be given in the AMPL format, so you are encouraged to implement an AMPL mathematical program to solve the problems — although this is not required.

The first problem is an instance of the **Shortest Path Problem**. The other problems
will be revealed when you get to them :)

## Where do I begin?

- Start by
**copying**this project. -
Follow the instructions given and solve the problem.
**Tip:**the challenges are simple enough that you can use NEOS to run your programs. If you need help, checkout these NEOS usage examples. -
Enter the optimal solution using the answer terminal command. Example:

> answer 876.54 - If you enter the correct solution, you will be given a link to the next problem.
- Rinse and repeat, until you reach the finish line.

## The prize

Everyone that completes the challenge gets a cookie at the end.

## Create your own challenges, puzzles, assignments, etc.

You too can create mathematical programming challenges and classroom exercises and share them online. Just create a free account to get started.

Have fun!

— *Davi*