The IOI 2020 Competition

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Tasks

Licence

All IOI2020 tasks are published under the Creative Commons Attribution (CC-BY) License.

Day 0 - Practice Session

Implementation Notice
- Official English
Gift
- Official English
- Test data and supplementary materials
Jelly
- Official English
- Input data and sample outputs
Routers
- Official English
- Test data and supplementary materials
Squares
- Official English
- Test data and supplementary materials

Day 1

Implementation Notice
- Official English
- Translations:
  ARG, ARM, AUS, AUT, AZE, BGR, BIH, BOL, BRA, CHE, CHL, CHN, COL, CUB, CYP, CZE, DEU, DOM, EST, FRA, GEO, GRC, HRV, HUN, IRN, ISR, ITA, JPN, KOR, LTU, LUX, LVA, MAC, MEX, MKD, MNE, MNG, NLD, POL, PRT, ROU, RUS, SLV, SVK, SVN, SYR, THA, TUR, TWN, UKR, UZB, VEN, VNM
Comparing Plants
- Author: Jo Sunghyeon
- Official English
- Translations:
  ARG, ARM, AUS, AUT, AZE, BGR, BIH, BOL, BRA, CHE, CHL, CHN, COL, CUB, CYP, CZE, DEU, DOM, EST, FRA, GEO, GRC, HRV, HUN, IDN, IRN, ISR, ITA, JPN, KGZ, KOR, LKA, LTU, LUX, LVA, MAC, MEX, MKD, MNE, MNG, NLD, POL, PRT, ROU, RUS, SLV, SVK, SVN, SYR, THA, TKM, TUR, TWN, UKR, UZB, VEN, VNM
- Review
- Test data and supplementary materials
Connecting Supertrees
- Authors: Ranald Lam Yun Shao and Ling Yan Hao
- Official English
- Translations:
  ARG, ARM, AUS, AUT, AZE, BGR, BIH, BOL, BRA, CHE, CHL, CHN, COL, CUB, CYP, CZE, DEU, DOM, EST, FRA, GEO, GRC, HRV, HUN, IDN, IRN, ISR, ITA, JPN, KGZ, KOR, LKA, LTU, LUX, LVA, MAC, MEX, MKD, MNE, MNG, NLD, POL, PRT, ROU, RUS, SLV, SVK, SVN, SYR, THA, TUR, TWN, UKR, UZB, VEN, VNM
- Review
- Test data and supplementary materials
Carnival Tickets
- Author: Xiao Mao
- Official English
- Translations:
  ARG, ARM, AUS, AUT, AZE, BGR, BIH, BOL, BRA, CHE, CHL, CHN, COL, CUB, CYP, CZE, DEU, DOM, EST, FRA, GEO, GRC, HRV, HUN, IDN, IRN, ISR, ITA, JPN, KGZ, KOR, LKA, LTU, LUX, LVA, MAC, MEX, MKD, MNE, MNG, NLD, POL, PRT, ROU, RUS, SLV, SVK, SVN, SYR, THA, TUR, TWN, UKR, UZB, VEN, VNM
- Review
- Test data and supplementary materials

Day 2

Implementation Notice
- Official English
- Translations:
  ARG, ARM, AUT, AZE, BGR, BIH, BOL, BRA, CHE, CHL, CHN, COL, CUB, CYP, CZE, DEU, DOM, EST, FRA, GEO, GRC, HUN, ITA, JPN, KOR, LTU, LUX, LVA, MAC, MEX, MKD, MNE, MNG, NLD, POL, PRT, ROU, RUS, SLV, SVK, SVN, SYR, THA, TUR, TWN, UKR, UZB, VEN, VNM
Packing Biscuits
- Author: Mikhail Tikhomirov
- Official English
- Translations:
  ARG, ARM, AUT, AZE, BGR, BIH, BOL, BRA, CHE, CHL, CHN, COL, CUB, CYP, CZE, DEU, DOM, EST, FRA, GEO, GRC, HRV, HUN, IDN, IRN, ITA, JPN, KGZ, KOR, LTU, LUX, LVA, MAC, MEX, MKD, MNE, MNG, NLD, POL, PRT, ROU, RUS, SLV, SVK, SVN, SYR, THA, TUR, TWN, UKR, UZB, VEN, VNM
- Review
- Test data and supplementary materials
Counting Mushrooms
- Author: Angus Ritossa
- Official English
- Translations:
  ARG, ARM, AUT, AZE, BGR, BIH, BOL, BRA, CHE, CHL, CHN, COL, CUB, CYP, CZE, DEU, DOM, EST, FRA, GEO, GRC, HRV, HUN, IDN, IRN, ITA, JPN, KGZ, KOR, LTU, LUX, LVA, MAC, MEX, MKD, MNE, MNG, NLD, POL, PRT, ROU, RUS, SLV, SVK, SVN, SYR, THA, TUR, TWN, UKR, UZB, VEN, VNM
- Review
- Test data and supplementary materials
Stations
- Author: Mikhail Tikhomirov
- Official English
- Translations:
  ARG, ARM, AUT, AZE, BGR, BIH, BOL, BRA, CHE, CHL, CHN, COL, CUB, CYP, CZE, DEU, DOM, EST, FRA, GEO, GRC, HRV, HUN, IDN, IRN, ITA, JPN, KGZ, KOR, LTU, LUX, LVA, MAC, MEX, MKD, MNE, MNG, NLD, POL, PRT, ROU, RUS, SLV, SVK, SVN, SYR, THA, TKM, TUR, TWN, UKR, UZB, VEN, VNM
- Review
- Test data and supplementary materials

List of Authors

The list of authors who have submitted tasks to IOI 2020:

Agustín Santiago Gutiérrez
Aliaksandr Kernazhytski
Andreas Martin
Angus Ritossa
Anton Trygub
Artem Iglikov
Daniel Goldbach
Dino Santl
Fabricio Loor
Itay Yehuda
Jo Sunghyeon
Leonid Gaev
Ling Yan Hao
Mahmoud Badawy
Mikhail Tikhomirov
Monika Steinova
Nguyen Doan Dai
Ofer Wald
Ranald Lam Yun Shao
Vasiliki Kontoura
Vlad Alexandru Gavrila Ionescu
Xiao Mao
Yagub Aliyev