# Contests

I help organize the National Olympiad in Informatics – Philippines, where my main work is to write and test problems, and help train the Philippine team to the IOI. I talk more about this in Helping out in our NOI.

I also help out with art sometimes. Here’s my artwork, the header for Sorting the Planets, that will hopefully encourage you to try the problem:

## Problems

Four of my problems have been used for public NOI.PH rounds:

### Partial Reduplication

From NOI.PH 2020 Eliminations. A simple string processing problem.

### Pakain ng Pahiyas 2

From NOI.PH 2020 Eliminations. A math problem that involves some counting.

### Sorting the Planets

From NOI.PH 2019 Finals. A challenging ad hoc problem that can be solved mostly through clever observations.

### Exchange Gift

From NOI.PH 2019 Eliminations. A data structure problem about careful implementation.

## Reflections

After writing reflections for math contests, I decided to write reflections for programming contests I joined as well. These cover my junior and senior years in high school:

2017 | NOI.PH Finals Reflections |

NOI.PH Team Round Reflections | |

2018 | DISCS PRO Reflections |

NOI.PH Finals Reflections | |

IOI Reflections |