Live, Love, Logic.
Since 1975 each competition has two papers of 3 questions. Before that there were fewer questions. The first competition was held in 1962, giving 220 problems to date.
Many thanks to Le Thai Hoang for help in providing and translating 1980-1999 and to Hung Ha Duy for providing and translating 1962-1979 and 2000-3.
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