| Rank | Score | Rating | Date | Event | |
|---|---|---|---|---|---|
|
|
2
|
189 | · | May 25, 1991 |
IOI 1991
|
|
|
2
|
189 | · | May 25, 1991 |
3rd International Olympiad in Informatics. Greece
|
|
|
9 - 10
|
108 | · | July 21, 1990 |
IOI 1990
|
|
|
9
|
108 | · | July 21, 1990 |
2nd International Olympiad in Informatics. Soviet Union
|
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