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Discussion of Problem 2115. The Knowledge Day

Badr WA3: possible scenarios [1] // Problem 2115. The Knowledge Day 29 Aug 2021 16:32
Alexbububu wa 36 // Problem 2115. The Knowledge Day 27 Jun 2020 14:22
basuki Difficulty above 400 ?? [1] // Problem 2115. The Knowledge Day 20 Apr 2019 12:10

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