Informatics Contest Problem Archives

• FTP directory of IOI Secretariat
• Hans Domjan's ACM Programming Contest Archive (Switzerland) [ NL mirror ]
• Let's Solve IT (Thailand)
• Problem Set Archive with On-Line Judge (Universidad de Valladolid, Spain)
• Programming Contest Problem Archive maintained by Arsène von Wyss (avonwyss@beaulieu-software.ch)
• Spanish language Archive (Argentina) [old site]
• Programming Contest Problem Archive (Hungary) [Last updated Sept. 1996?]

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