Since the second round of this season of COCI (Croatian Open Competition in Informatics) was held last saturday, here is the continuation in the series of COCI appreciation posts (I will post one after each COCI round, so six in total!). For my coaching, I went through all COCI contests since 2006 to gather tasks and selected some of my favorite ones.

Notes

• Check out the first post for notes about the process and the problemset.
• There are 9 tasks in this problemset since I accidentally forgot to put one task (Zoo) last time, so it's included now.

Tasks

A: 2016/2017, Contest 5: Ronald

Author: Adrian Satja Kurdija (satja)

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Difficulty range: 1300-1500

B: 2011/2012, Contest 2: Kompići

Author: Adrian Satja Kurdija (satja)

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Difficulty range: 1300-1500

C: 2013/2014, Contest 2: Putnik

Author: Adrian Satja Kurdija (satja)

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Difficulty range: 1500-1700

D: 2020/2021, Contest 5: Planine

Author: Daniel Paleka and Paula Vidas (dpaleka,paula)

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Difficulty range: 1700-1900

E: 2013/2014, Contest 2: Linije

Author: Domagoj Ćevid

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Difficulty range: 1900-2100

F: 2019/2020, Contest 1: Trobojnica

Author: Daniel Paleka (dpaleka)

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Difficulty range: 2100-2300

G: 2014/2015, Contest 4: Stanovi

Author: Mislav Balunović (mislav)

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Difficulty range: 2100-2300

H: 2016/2017, Contest 6: Sirni

Author: Domagoj Bradač (DBradac)

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Difficulty range: 2200-2400 (my guess :) )

Bonus task (since I forgot it last time):

2019/2020, Contest 1: Zoo

Author: Ivan Paljak (ipaljak)

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Difficulty range: 2200-2400

I hope you find these tasks useful!