The 8th International Olympiad in Informatics was held in Veszprém, Hungary in 1996. There were two competition days, with 3 tasks given to the competitors on each day. You can see the tasks and solutions below.

Day 1:
      A Game
      Job Processing
      Network of Schools

Day 2:
      Sorting a Three-Valued Sequence
      Longest Prefix
      Magic Squares

Other materials:
      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.