This is the archive of all past NOI.PH problems. Feel free to practice and submit anytime :)
To see the list of problems all at once, click here.
The National Olympiad in Informatics - Philippines is the Philippines' national qualifying round for the International Olympiad in Informatics, the most prestigious high-school level computer science competition in the world.
NOI.PH is offering a prize for every 5000 points from a single participant! After getting 5000 points, email us at email@example.com so we can verify your submissions and you may receive your prize!