Development and perspectives of automated grading in informatics olympiads

Input/output details required a lot of concentration from participants for mistyping a file name or redundant/missing end of line symbol might have resulted in zero points. Sometimes that even shifted focus from algorithm to formatting details. These problems were solved with the appearance of the first Informatics Contest Management System in 2001 which allowed the contestants to submit and run their program with sample tests thus checking their programs for compatibility with format requirements and correcting if there was such a need during contest time. After the contest management systems found their place in IOI’s the attention was shifted to the relationship between the grades given for a submission and the algorithm implemented. The paper presents overview of published papers and discussions in IOI community on these topics. The papers ends with perspectives and directions for future improvement of grading in IOI’s