IOI 2022 Tasks

IOI 2022 tasks are published under the Creative Commons Attribution license (CC-BY) license.

Editorial/discussion for Contest Days 1 and 2 can be found here.

Practice Contest

cards (Magic Cards)

• Statement: Official English
• Test data and supplementary materials

hoax (Hoax Spreading)

• Statement: Official English
• Test data and supplementary materials

team (Team Contest)

• Statement: Official English
• Test data and supplementary materials

towns (Connected Towns)

• Statement: Official English
• Test data and supplementary materials

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Contest Day 1

Notice

• Statements:
  • PDF
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | el_CY | el_GR | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | it_IT | ja_JP | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | th_TH | tr_TR | uk_UA | vi_VN | zh_CN | zh_MO | zh_TW
  • Markdown
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | el_CY | el_GR | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | it_IT | ja_JP | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | th_TH | tr_TR | uk_UA | vi_VN | zh_CN | zh_MO | zh_TW

fish (Catfish Farm)

• Author: Lim Rui Yuan (Singapore), NUS High School
• Statements:
  • PDF
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | el_CY | el_GR | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | hy_AM | is_IS | it_IT | ja_JP | ka_GE | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | sv_SE | th_TH | tr_TR | uk_UA | uz_UZ | vi_VN | zh_CN | zh_MO | zh_TW
  • Markdown
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | el_CY | el_GR | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | hy_AM | is_IS | it_IT | ja_JP | ka_GE | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | sv_SE | th_TH | tr_TR | uk_UA | uz_UZ | vi_VN | zh_CN | zh_MO | zh_TW
• Test data and supplementary materials

prison (Prisoner Challenge)

• Authors: Masataka Yoneda & Hirotaka Yoneda (Japan), The University of Tokyo
• Statements:
  • PDF
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | el_CY | el_GR | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | hy_AM | is_IS | it_IT | ja_JP | ka_GE | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | sv_SE | th_TH | tr_TR | uk_UA | uz_UZ | vi_VN | zh_CN | zh_MO | zh_TW
  • Markdown
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | el_CY | el_GR | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | hy_AM | is_IS | it_IT | ja_JP | ka_GE | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | sv_SE | th_TH | tr_TR | uk_UA | uz_UZ | vi_VN | zh_CN | zh_MO | zh_TW
• Test data and supplementary materials

towers (Radio Towers)

• Author: Kevin Luiz Ponte Pucci (Portugal), Oporto University
• Statements:
  • PDF
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | el_CY | el_GR | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | hy_AM | is_IS | it_IT | ja_JP | ka_GE | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | sv_SE | th_TH | tr_TR | uk_UA | uz_UZ | vi_VN | zh_CN | zh_MO | zh_TW
  • Markdown
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | el_CY | el_GR | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | hy_AM | is_IS | it_IT | ja_JP | ka_GE | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | sv_SE | th_TH | tr_TR | uk_UA | uz_UZ | vi_VN | zh_CN | zh_MO | zh_TW
• Test data and supplementary materials

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Contest Day 2

Notice

• Statements:
  • PDF
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | el_CY | el_GR | en_ISC | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | it_IT | ja_JP | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | th_TH | tr_TR | uk_UA | vi_VN | zh_CN | zh_MO | zh_TW
  • Markdown
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | el_CY | el_GR | en_ISC | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | it_IT | ja_JP | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | th_TH | tr_TR | uk_UA | vi_VN | zh_CN | zh_MO | zh_TW

circuit (Digital Circuit)

• Author: Prabowo Djonatan (Indonesia), Garena Singapore
• Statements:
  • PDF
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | el_CY | el_GR | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | hy_AM | is_IS | it_IT | ja_JP | ka_GE | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | sv_SE | th_TH | tr_TR | uk_UA | uz_UZ | vi_VN | zh_CN | zh_MO | zh_TW
  • Markdown
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | el_CY | el_GR | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | hy_AM | is_IS | it_IT | ja_JP | ka_GE | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | sv_SE | th_TH | tr_TR | uk_UA | uz_UZ | vi_VN | zh_CN | zh_MO | zh_TW
• Test data and supplementary materials

insects (Rarest Insects)

• Author: Hazem Issa (Egypt), Egyptian Olympiad in Informatics (EOI)
• Statements:
  • PDF
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | el_CY | el_GR | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | hy_AM | is_IS | it_IT | ja_JP | ka_GE | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | sv_SE | th_TH | tr_TR | uk_UA | uz_UZ | vi_VN | zh_CN | zh_MO | zh_TW
  • Markdown
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | el_CY | el_GR | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | hy_AM | is_IS | it_IT | ja_JP | ka_GE | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | sv_SE | th_TH | tr_TR | uk_UA | uz_UZ | vi_VN | zh_CN | zh_MO | zh_TW
• Test data and supplementary materials

islands (Thousands Islands)

• Author: Félix Moreno Peñarrubia (Spain), Universitat Polit`ecnica de Catalunya – BarcelonaTech
• Statements:
  • PDF
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | de_LU | el_CY | el_GR | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | hy_AM | is_IS | it_IT | ja_JP | ka_GE | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | sv_SE | th_TH | tr_TR | uk_UA | uz_UZ | vi_VN | zh_CN | zh_MO | zh_TW
  • Markdown
    Official English
    ar_SY | az_AZ | bg_BG | cs_CZ | de_AT | de_CH | de_DE | de_LU | el_CY | el_GR | es_AR | es_BO | es_CL | es_CO | es_CU | es_ES | es_MX | es_PE | es_SV | es_VE | et_EE | fa_IR | fr_FR | he_IL | hr_HR | hu_HU | hy_AM | is_IS | it_IT | ja_JP | ka_GE | kk_KZ | ko_KR | ky_KG | lt_LT | lv_LV | mn_MN | nl_NL | pl_PL | pt_BR | pt_PT | ro_MD | ro_RO | ru | sk_SK | sl_SI | sv_SE | th_TH | tr_TR | uk_UA | uz_UZ | vi_VN | zh_CN | zh_MO | zh_TW
• Test data and supplementary materials