For the fifth time, the International Informatics Olympiads in Teams will be mirrored into online contests. These contests, of a lower difficulty level than those of the IOI, are intended for teams of 4 contestants from the same high school. However, everyone is welcome to participate to the mirror contests, especially if you are considering to join officially the IIOT in the future!

More specifically, we allow:

• several teams from the same school (also in the official contest)
• teams participating only in some contests (also in the official contest)
• smaller teams (also in the official contest) and larger teams
• teams of students from different schools and non-students
• changes in team members between contests

The mirror contests timing will be USACO-like: it will be open for 27 hours but you will be able to compete for up to 3 hours (you can decide when to "start" your time window, after the login). Participation will be available upon registration (re-registration needed for each contest). The problem statements will be available in English only, and the languages officially supported are C, C++, Pascal and Python 3. Every contest will consist of 8 or 9 problems (see https://squadre.olinfo.it and https://iio.team for further information).

Note: you can decide when to start your 3 hour time window, but remember that the contest will end 27 hours after the start of the official contest regardless of your time window!

If you want to participate, you must:

1. Visit the contest website: https://mirror.squadre.olinfo.it/
2. Click the link "register", fill out the form and then click on the register button and then "back to login"
3. You can now log in with the same username and password you used to sign up
4. If the login is successful you will be ready to participate, just wait for the contest to start! (and maybe save the page in your bookmarks, so that you can quickly get back to it when the contest begins)
5. When the contest starts, you will see a red button. Click it when you want to start your 3 hour time window!
6. The ranking for each contest will be available at https://mirror.squadre.olinfo.it/ranking/ after the start of each contest
7. The tasks will also be available for training in https://training.olinfo.it few days after the contests
8. Good luck and have fun!

The schedule of the contests is the following (starting times in the CET time zone):

• Practice: nov. 9 to nov. 12
• Round 1: nov. 15 @ 17:30
• Round 2: dec. 14 @ 17:30
• Round 3: jan. 12 @ 17:30
• Round 4: feb. 3 @ 17:30
• Finals: feb. 25 @ 13:00

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The final round of the IIOT (International Informatics Olympiads in Teams) is starting next Friday, February 26th 2021! In the meanwhile, you can enjoy our teaser below and try to guess the next eight problems from the hints :)

If you missed the first rounds, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 10:00 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The fourth round of the IIOT (International Informatics Olympiads in Teams) is starting tomorrow: Thursday, February 4th 2021! In the meanwhile, you can enjoy our teaser below and try to guess the next nine problems from the hints :)

If you missed the first rounds, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 14:30 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The third round of the IIOT (International Informatics Olympiads in Teams) is starting tomorrow: Wednesday, January 13th 2021! In the meanwhile, you can enjoy our teaser below and try to guess the next nine problems from the hints :)

If you missed the first rounds, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 14:30 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The second round of the IIOT (International Informatics Olympiads in Teams) is starting next Tuesday, December 15th 2020! In the meanwhile, you can enjoy our teaser below and try to guess the next eight problems from the hints :)

If you missed the first round, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 14:30 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

For the fourth time, the International Informatics Olympiads in Teams will be mirrored into online contests. These contests, of a lower difficulty level than those of the IOI, are intended for teams of 4 contestants from the same high school. However, everyone is welcome to participate to the mirror contests, especially if you are considering to join officially the IIOT in the future!

More specifically, we allow:

• several teams from the same school (also in the official contest)
• teams participating only in some contests (also in the official contest)
• changes in team members
• teams of students from different schools
• smaller teams

The mirror contests timing will be USACO-like: it will be open for 24 hours but you will be able to compete for up to 3 hours (you can decide when to "start" your time window, after the login). Participation will be available upon registration (re-registration needed for each contest). The problem statements will be available in English only, and the languages allowed are C, C++, Pascal and Python 3. Every contest will consist of 8 or 9 problems (see https://iio.team for further information).

Note: you can decide when to start your 3 hour time window, but remember that the contest will end 24 hours after the start of the official contest regardless of your time window!

If you want to participate, you must:

1. Visit the contest website: https://mirror.squadre.olinfo.it/
2. Click the link "register", fill out the form and then click on the register button and then "back to login"
3. You can now log in with the same username and password you used to sign up
4. If the login is successful you will be ready to participate, just wait for the contest to start! (and maybe save the page in your bookmarks, so that you can quickly get back to it when the contest begins)
5. When the contest starts, you will see a red button. Click it when you want to start your 3 hour time window!
6. The ranking for each contest will be available at https://mirror.squadre.olinfo.it/ranking/ after the start of each contest
7. The tasks will also be available for training in https://training.olinfo.it few days after the contests
8. Good luck and have fun!

The schedule of the contests is the following (starting times in the CET time zone):

• Round 1: nov. 16 @ 14:30
• Round 2: dec. 15 @ 14:30
• Round 3: jan. 13 @ 14:30
• Round 4: feb. 4 @ 14:30
• Finals: feb. 26 @ 13:00

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The final round of the IIOT (International Informatics Olympiads in Teams) is starting next Friday, February 21th 2020! In the meanwhile, you can enjoy our teaser below and try to guess the next eight problems from the hints :)

If you missed the first rounds, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 13:00 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The fourth round of the IIOT (International Informatics Olympiads in Teams) is starting next Thursday, February 6th 2020! In the meanwhile, you can enjoy our teaser below and try to guess the next eight problems from the hints :)

If you missed the first rounds, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 14:30 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The third round of the IIOT (International Informatics Olympiads in Teams) is starting next Wednesday, January 15th 2020! In the meanwhile, you can enjoy our teaser below and try to guess the next eight problems from the hints :)

If you missed the first round, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 14:30 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The second round of the IIOT (International Informatics Olympiads in Teams) is starting next Tuesday, December 17th 2019! In the meanwhile, you can enjoy our teaser below and try to guess the next eight problems from the hints :)

If you missed the first round, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 15:00 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The first round of the IIOT (International Informatics Olympiads in Teams) is starting tomorrow, November 11th 2019! In the meanwhile, you can enjoy our teaser below and try to guess the next nine problems from the hints :)

Check this post for further details on how to join in. The mirror contest will be 3 hours USACO-style, starting from 15:00 in the CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

For the third time, the International Informatics Olympiads in Teams will be mirrored into online contests. These contests, of a lower difficulty level than those of the IOI, are intended for teams of 4 contestants from the same high school. However, everyone is welcome to participate to the mirror contests, especially if you are considering to join officially the IIOT in the future!

More specifically, we allow:

• several teams from the same school (also in the official contest)
• teams participating only in some contests (also in the official contest)
• changes in team members
• teams of students from different schools
• smaller teams

The mirror contests timing will be USACO-like: it will be open for 24 hours but you will be able to compete for up to 3 hours (you can decide when to "start" your time window, after the login). Participation will be available upon registration (re-registration needed for each contest). The problem statements will be available in English only, and the languages allowed are C, C++, Pascal and Python 3. Every contest will consist of 8 problems (see https://iio.team for further information).

Note: you can decide when to start your 3 hour time window, but remember that the contest will end 24 hours after the start of the official contest regardless of your time window!

If you want to participate, you must:

1. Visit the contest website: https://mirror.squadre.olinfo.it/
2. Click the link "register", fill out the form and then click on the register button and then "back to login"
3. You can now log in with the same username and password you used to sign up
4. If the login is successful you will be ready to participate, just wait for the contest to start! (and maybe save the page in your bookmarks, so that you can quickly get back to it when the contest begins)
5. When the contest starts, you will see a red button. Click it when you want to start your 3 hour time window!
6. The ranking for each contest will be available at https://mirror.squadre.olinfo.it/ranking/ after the start of each contest
7. The tasks will also be available for training in https://training.olinfo.it few days after the contests
8. Good luck and have fun!

The schedule of the contests is the following (starting times in the CET time zone):

• Practice: from nov. 4 to nov. 10 (whole days)
• Round 1: nov. 11 @ 15:00
• Round 2: dec. 17 @ 15:00
• Round 3: jan. 15 @ 14:30
• Round 4: feb. 6 @ 14:30
• Finals: feb. 21 @ 13:00

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

For the fourth time, the Italian national contest (valid for the selection of the Italian IOI team) will be mirrored into an online contest. The contest is primarily intended for high school contestants, but everyone is welcome to participate!

1. The problem statements will be available in both English and Italian.

2. Tasks will be IOI-like (with graders) and you will have 5 hours to solve them.

3. The languages allowed are C and C++.

4. The time window will start on 2019 September 18th, 10:00 CEST and will end on 2019 September 19th, 22:00 CEST.

The contest timing will be USACO-like: you can decide when to start your 5-hours time window (after the login), but the contest will end at 22:00 CEST regardless of your time window.

If you want to participate, you must:

1. Visit the contest website: https://open.oii2019.ga/
2. Click the link "register", fill out the form and then click on the register button and then "back to login"
3. You can now log in with the same username and password you used to sign up
4. If the login is successful you will be ready to participate, just wait for the contest to start! (And maybe save the page in your bookmarks, so that you can quickly get back to it when the contest begins)
5. When the contest starts, you will see a red button. Click it when you want to start your 5 hour time window!
6. Good luck and have fun!

Ranking

The ranking of the online contest will be available here when the contest starts.

Training after the contest

After the end of the contest, tasks will be uploaded in the italian training website (localised also in English), section "task & quiz archive", where they will be available for online evaluation (after registering to the website).

On the 15th of March 2019, the Italian company Reply will hold the second edition of the Reply Code Challenge, a team-based coding competition open to students and professional coders. In its first edition, this competition involved more than 7,700 contestants from 67 countries.

This year, a new contest will also be launched: the Reply Code Challenge Teen Edition, open to and designed for teenagers from the ages of 14 to 19. This contest, created in collaboration with the Italian Olympiads in Informatics staff, will challenge teams of up to four young students to solve algorithmic problems. The winning team will receive €5,000 to be divided among the members, the second ranked team will receive €2,000 and the third ranked team will receive €1,000.

To take part, sign up at https://challenges.reply.com/ before March 14th, create a team, and participate on March 15th: both the Standard Challenge and the Teen Edition will be held online from 4.30pm CET to 8.30pm CET. Participants can use any programming language and send as many solutions for each problem as they like.

• Registration: https://challenges.reply.com/
• Rules & FAQ: https://challenges.reply.com/tamtamy/page/teenfaq.action
• Official news: https://www.reply.com/en/newsroom/events/code-challenge-15-03-2019

Gaspare Ferraro and Giorgio Audrito, Italian Olympiads in Informatics staff

The final round of the IIOT (International Informatics Olympiads in Teams) is starting next Friday, February 8th, 2019! In the meanwhile, you can enjoy our teaser below and try to guess the next eight problems from the hints :)

If you missed the first rounds, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 13:00 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The fourth round of the IIOT (International Informatics Olympiads in Teams) is starting next Thursday, January 10th 2019! In the meanwhile, you can enjoy our teaser below and try to guess the next eight problems from the hints :)

If you missed the first rounds, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 14:30 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The third round of the IIOT (International Informatics Olympiads in Teams) is starting next Wednesday, December 19th 2018! In the meanwhile, you can enjoy our teaser below and try to guess the next eight problems from the hints :)

If you missed the first rounds, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 14:30 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The second round of the IIOT (International Informatics Olympiads in Teams) is starting next tuesday, November 27th 2018! In the meanwhile, you can enjoy our teaser below and try to guess the next eight problems from the hints :)

If you missed the first round, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 15:00 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The first round of the IIOT (International Informatics Olympiads in Teams) is starting today, October 25th 2018! In the meanwhile, you can enjoy our teaser below and try to guess the next eight problems from the hints :)

Check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 15:00 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

For the second time, the International Informatics Olympiads in Teams will be mirrored into online contests. These contests, of a lower difficulty level than those of the IOI, are intended for teams of 4 contestants from the same high school. However, everyone is welcome to participate to the mirror contests, especially if you are considering to join officially the IIOT in the future!

More specifically, we allow:

• several teams from the same school (also in the official contest)
• teams participating only in some contests (also in the official contest)
• changes in team members
• teams of students from different schools
• smaller teams

The mirror contests timing will be USACO-like: it will be open for 24 hours but you will be able to compete for up to 3 hours (you can decide when to "start" your time window, after the login). Participation will be available upon registration to the Italian trainings website (localized also in English): please do it in advance as it may be impossible during the contest! The problem statements will be available in English only, and the languages allowed are C, C++ and Pascal. Every contest will consist of 8 problems (see https://iio.team for further information).

Note: you can decide when to start your 3 hour time window, but remember that the contest will end 24 hours after the start of the official contest regardless of your time window!

If you want to participate, you must:

1. Visit the training website: https://training.olinfo.it
2. Click "Sign up" (if you haven't already done it previously)
3. Fill out the form and then confirm
4. Visit the contest list: https://training.olinfo.it/contests
5. Click on the OIS2019 -- <round> list entry
6. Log in with the same username and password you used to sign up
7. If the login is successful you will be ready to participate, just wait for the contest to start! (and maybe save the page in your bookmarks, so that you can quickly get back to it when the contest begins)
8. When the contest starts, you will see a red button. Click it when you want to start your 3 hour time window!
9. The ranking for each contest will be available at https://squadre.olinfo.it/ranking2 only when each contest ends
10. The tasks will also be available for training in https://training.olinfo.it few days after the contests
11. Good luck and have fun!

The schedule of the contests is the following (starting times in the CEST/CET time zone):

• Practice: from oct. 19 to oct. 25 (whole days)
• Round 1: oct. 26 @ 15:00
• Round 2: nov. 27 @ 15:00
• Round 3: dec. 19 @ 14:30
• Round 4: jan. 10 @ 14:30
• Finals: feb. 8 @ 13:00

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The final round of the IIOT (International Olympiads in Informatics in Teams) is starting tomorrow, February 16th 2018! In the meanwhile, you can enjoy our teaser below and try to guess the next seven problems from the hints :)

If you missed the first rounds, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 17:30 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The third round of the IIOT (International Olympiads in Informatics in Teams) is starting next week, December 20th 2017! In the meanwhile, you can enjoy our teaser below and try to guess the next seven problems from the hints :)

If you missed the first rounds, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 14:30 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The second round of the IIOT (International Olympiads in Informatics in Teams) is starting tomorrow, November 27th 2017! In the meanwhile, you can enjoy our teaser below and try to guess the next seven problems from the hints :)

If you missed the first, you can still join in; check this post for further details. The mirror contest will be 3 hours USACO-style, starting from 15:00 in the CEST/CET time zone, and ending 24 hours after that.

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)

The most recent version of this post is available here.

For the first time, the International Olympiads in Informatics in Teams (with the official participation of Italy, Romania and Russia) will be mirrored into online contests. These contests, of a lower difficulty level than those of the IOI, are intended for teams of 4 contestants from the same high school. However, everyone is welcome to participate to the mirror contests, especially if you are considering to join officially the IIOT in the future! More specifically, we allow:

• several teams from the same school (also in the official contest)
• teams participating only in some contests (also in the official contest)
• changes in team members
• teams of students from different schools
• smaller teams

The mirror contests timing will be USACO-like: it will be open for 24 hours but you will be able to compete for up to 3 hours (you can decide when to "start" your time window, after the login). Participation will be available upon registration to the Italian trainings website (localized also in English): please do it in advance as it may be impossible during the contest! The problem statements will be available in English only, and the languages allowed are C, C++ and Pascal. Every contest will consist of 7 problems (see https://ioi.team for further information).

Note: you can decide when to start your 3 hour time window, but remember that the contest will end 24 hours after the start of the official contest regardless of your time window!

If you want to participate, you must:

1. Visit the training website: https://training.olinfo.it
2. Click "Sign up" (if you haven't already done it previously)
3. Fill out the form and then confirm
4. Visit the contest list: https://training.olinfo.it/contests
5. Click on the OIS2018 -- <round> list entry
6. Log in with the same username and password you used to sign up
7. If the login is successful you will be ready to participate, just wait for the contest to start! (and maybe save the page in your bookmarks, so that you can quickly get back to it when the contest begins)
8. When the contest starts, you will see a red button. Click it when you want to start your 3 hour time window!
9. The ranking for each contest will be available at https://squadre.olinfo.it/ranking2 only when each contest ends
10. The tasks will also be available for training in https://training.olinfo.it few days after the contests
11. Good luck and have fun!

The schedule of the contests is the following (starting times in the CEST/CET time zone):

• Practice: from oct. 23 to oct. 27 (whole days)
• Round 1: oct. 30 @ 15:00
• Round 2: nov. 28 @ 15:00
• Round 3: dec. 20 @ 14:30
• Round 4: jan. 25 @ 14:30
• Finals: feb. 16 @ 17:30

We hope that you will join us or encourage your students to do so!

Giorgio Audrito (on behalf of the Italian IIOT organizers)