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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 1994
The 6th International Olympiad in Informatics was held in Haninge, Sweden in 1994. There were two competition days (Tuesday and Thursday), separated by one day of rest. Each day the competitors had to solve three problems.
Day 1:
The Triangle
The Castle
The Primes
Day 2:
The Clocks
The Buses
The Circle
Other materials:
Solutions
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.