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IOI 2018 Day 1 #2 Seats
IOI 2016 Day 1 #3 Shortcut
IOI 2020 Day 2 #3 Stations
IOI 2016 Day 1 #1 Detecting Molecules
IOI 2019 Day 1 #3 Rectangles
IOI 2018 Day 1 #3 Werewolf
IOI 2018 Day 2 #1 Mechanical Doll
IOI 2015 Day 1 #3 Teams