The 7th International Olympiad in Informatics was held in Eindhoven, The Netherlands in 1995. There were two competition days, with 3 tasks given to the competitors on each day. You can see the tasks, solutions and tests below.

Day 1:
      Packing Rectangles
      Shopping Offers
      Printing

Day 2:
      Letter Game
      Street Race
      Wires and Switches

Other materials:
      Solution to Packing Rectangles
      Solution to Letter Game
      Solution to Street Race
      Solution to Wires and Switches
      All test data


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.