Just finished
Due to the COVID-19 pandemic, IOI 2020 was hosted by Singapore online. Visit the official website to learn more.
Just finished IOI 2020 was held online
IOI 2000
The 12th International Olympiad in Informatics was held in Beijing, China in 2000. There were two competition days, with 3 tasks given to the competitors on each day. You can see the tasks, test cases and solutions below.
Day 1:
Palindrome
Car Parking
Median Strength
Day 2:
Walls
Post Office
Building with Blocks
Other materials:
Test cases and some source codes
Solutions to all problems
Note that the grading model changed at IOI'94 and beyond.
Before IOI 1994, a human evaluator would sit behind the competitor's computer and do the testing manually (enter test data through the keyboard, check the output on the screen). Starting from IOI 1994, an automatic grading process is used, with test input defined in files.