Les & Kursus OSN Informatika Online by Kokocoder

Les OSN Informatika, bersama para medalis

Tanya Kelas via WhatsApp
Medalis emas OSN Informatika dari Kelas OSN Kokocoder

Gunadi & Hanif

1st and 2nd Gold Medalist 🥇 of OSN Informatika Indonesia 2023 Kokocoder Troops

25/30

medali OSN Informatika 2026 diraih KC Troops

300+

siswa dari 20+ provinsi di Indonesia

45/60

finalis OSN Informatika 2026 adalah KC Troops

25 dari 30 medali OSN Informatika 2026 diraih KC Troops

3 emas, 9 perak, dan 13 perunggu. Berikut sebagian peraih medali dari kelas OSN Informatika Kokocoder.

  • Lionel Christensen Wijaya, peraih medali Emas OSN Informatika 2026, siswa les OSN Kokocoder
    Lionel Christensen Wijaya SMAK St. Louis 1 Surabaya 🥇 Emas OSN 2026
  • Gerardus Paxton Mardhi, peraih medali Emas OSN Informatika 2026, siswa les OSN Kokocoder
    Gerardus Paxton Mardhi SMA Kanisius Jakarta 🥇 Emas OSN 2026
  • Ahmad Yazid Muhandis, peraih medali Emas OSN Informatika 2026, siswa les OSN Kokocoder
    Ahmad Yazid Muhandis SMA Kharisma Bangsa 🥇 Emas OSN 2026
  • Afiq Khazindar Raiyan, peraih medali Perak OSN Informatika 2026, siswa les OSN Kokocoder
    Afiq Khazindar Raiyan MAN 1 Pekanbaru 🥈 Perak OSN 2026
  • Nicholas Laurent, peraih medali Perak OSN Informatika 2026, siswa les OSN Kokocoder
    Nicholas Laurent SMA Kusuma Bangsa 🥈 Perak OSN 2026
  • Avner Maxwell Lim, peraih medali Perak OSN Informatika 2026, siswa les OSN Kokocoder
    Avner Maxwell Lim SMA Pelita Harapan Kemang Village 🥈 Perak OSN 2026
Lihat semua 25 peraih medali OSN Informatika 2026 →

Les OSN Informatika online, dari dasar sampai final

Kursus OSN Informatika Kokocoder melatih siswa SMP dan SMA memecahkan soal algoritma dengan C++, dari persiapan OSN-K dan OSN-P sampai OSN nasional. Semua pelatih adalah peraih medali olimpiade informatika.

Kelas reguler online

Belajar bersama sesuai level: dasar C++, algoritma, sampai teknik competitive programming tingkat OSN.

Mentoring privat

Sesi 1-on-1 dengan pelatih medalis untuk fokus pada topik dan soal yang paling kamu butuhkan.

Simulasi OSN

Try out OSN-K, OSN-P, dan simulasi OSN nasional dengan soal buatan pelatih, lengkap dengan pembahasan.

Knight Camp

Pelatihan offline intensif beberapa hari untuk mengasah problem solving dan strategi lomba.

Untuk siapa kelas ini?

  • Siswa kelas 8 SMP sampai kelas 11 SMA yang ingin ikut OSN Informatika
  • Pemula yang belum pernah coding, maupun siswa yang sudah lolos OSN-K atau OSN-P
  • Belajar online dari seluruh Indonesia, dengan pilihan camp offline
Info biaya dan jadwal kelas terbaru: Tanya via WhatsApp

Bring fun to the preparation!

With our rich and hand-picked learning materials along with our supportive community, we guarantee you to have the best version of yourself competing in OSN Informatika.

This program is suitable for 8th - 11th graders

Fundamental Programming

Learn the basics of coding and enhance your logical thinking ability to create a strong foundation for your Competitive Programming journey.

1

Competitive Programming

Master more challenging algorithms like Combinatorics, Dynamic Programming, Binary Search, Graph Traversals, etc. and discover various approaches on solving Competitive Programming problems.

2

Grinding

Grind using problems to prepare yourself in Informatics Olympiad and other Programming Competitions that comes from various online judges and institutions.

3

New Friends!

Expand your network with new friends who shares the same passion and interest in Competitive Programming from across all Indonesia.

4
Knight Camp 3.0 Practice Session with Coach Ester
Matthew Hutama (Gold Medalist OSN 2023) with Jefferson and Faishal (OSN 2023 Finalist) during Knight Camp 3.0
Knight Camp 3.0 Practice Session with Coach Abdul

Meet our coaches!

Our coaches are national and international medalists,
starting from Olimpiade Sains Nasional (OSN) Informatika until the most prestigious International Olympiad of Informatics (IOI)
Yes, our coaches brought medals home to Indonesia! Are you ready to be the next?

Pelatih OSN Informatika Kokocoder: Aufan Ahmad Mumtaza

Aufan Ahmad Mumtaza

  • Silver Medalist IOI 2024 🥈
  • Bronze Medalist IOI 2025 & 2026 🥉
  • Bronze Medalist APIO 2024, 2025, 2026
  • Gold Medalist OSN 2022 🥇
Profil TOKI
Pelatih OSN Informatika Kokocoder: Albert Ariel Putra

Albert Ariel Putra

  • Silver Medalist IOI 2023 🥈
  • Bronze Medalist IOI 2022 🥉
  • Silver Medalist APIO 2022
  • Gold Medalist KSN 2020 🥇
Profil TOKI
Pelatih OSN Informatika Kokocoder: Nathan Allan

Nathan Allan

  • Bronze Medalist IOI 2025 & 2026 🥉
  • Bronze Medalist APIO 2026
  • Gold Medalist OSN 2022 🥇
Profil TOKI
Pelatih OSN Informatika Kokocoder: Warren Xing

Warren Xing

  • Bronze Medalist IOI 2026 🥉
  • Gold Medalist OSN 2025 🥇
  • Silver Medalist OSN 2024 🥈
Profil TOKI
Pelatih OSN Informatika Kokocoder: Nathania Jesslyn

Nathania Jesslyn

  • Silver Medalist EGOI 2026 🥈
  • Bronze Medalist EGOI 2024 🥉
  • Bronze Medalist OSN 2023 🥉
Profil TOKI
Pelatih OSN Informatika Kokocoder: Claire Shane Ailie Sumantri

Claire Shane Ailie Sumantri

  • Silver Medalist EGOI 2026 🥈
  • Bronze Medalist OSN 2025 🥉
Profil TOKI
Pelatih OSN Informatika Kokocoder: Rana Azka Hanania

Rana Azka Hanania

  • Bronze Medalist EGOI 2026 🥉
  • Bronze Medalist OSN 2025 🥉
Profil TOKI
Pelatih OSN Informatika Kokocoder: Radhya Cahya Kusuma

Radhya Cahya Kusuma

  • Silver Medalist APIO 2024
  • Silver Medalist OSN 2022 🥈
Profil TOKI
Pelatih OSN Informatika Kokocoder: Mitchell Joshua Hong

Mitchell Joshua Hong

  • Gold Medalist OSN 2025 🥇
  • Bronze Medalist OSN 2024 🥉
Profil TOKI
Pelatih OSN Informatika Kokocoder: Benedict Presley

Benedict Presley

  • Gold Medalist OSN 2022 🥇
  • Clash of Champions Ruangguru 2025
Profil TOKI
Pelatih OSN Informatika Kokocoder: Shane Michael Tanata Tendy

Shane Michael Tanata Tendy

  • Gold Medalist KSN 2021 🥇
Profil TOKI
Pelatih OSN Informatika Kokocoder: Thesen Wijaya

Thesen Wijaya

  • Gold Medalist OSN 2025 🥇
Profil TOKI
Pelatih OSN Informatika Kokocoder: Clement Kevin Tanadi

Clement Kevin Tanadi

  • Gold Medalist OSN 2024 🥇
Profil TOKI
Pelatih OSN Informatika Kokocoder: Owen Sidarta

Owen Sidarta

  • Gold Medalist OSN 2024 🥇
Profil TOKI
Pelatih OSN Informatika Kokocoder: Leonel Chailand

Leonel Chailand

  • Gold Medalist OSN 2025 🥇
Profil TOKI
Pelatih OSN Informatika Kokocoder: Yose Yehezkiel Maranata

Yose Yehezkiel Maranata

  • Silver Medalist OSN 2022 🥈
Profil TOKI
Pelatih OSN Informatika Kokocoder: Arnold Ardianto

Arnold Ardianto

  • Bronze Medalist OSN 2012 🥉
Profil TOKI
Pelatih OSN Informatika Kokocoder: Muhammad Salman Al Farisi

Muhammad Salman Al Farisi

  • Bronze Medalist IOI 2018 🥉
  • Gold Medalist OSN 2017 🥇
  • Silver Medalist OSN 2016 🥈
Profil TOKI
Pelatih OSN Informatika Kokocoder: Khairunnisa Athifah

Khairunnisa Athifah

  • Bronze Medalist EGOI 2026 🥉
  • Finalist OSN 2025
Profil TOKI
Pelatih OSN Informatika Kokocoder: Ackhava Adam Malonda

Ackhava Adam Malonda

  • Silver Medalist APIO 2024 & 2026
  • Silver Medalist OSN 2023 🥈
Profil TOKI
Pelatih OSN Informatika Kokocoder: Matthew Hutama Pramana

Matthew Hutama Pramana

  • Gold Medalist OSN 2023 🥇
Profil TOKI
Lihat Semua Pelatih

Testimonials

Gunadi Gani
 SMAK 1 BPK Penabur Jakarta 🥇 Gold Medalist OSN Informatika 2023
Joining Kokocoder has brought me a lot of new friends with the same interest. Oftentimes, when I participate in a contest such as Codeforces, I can see how far ahead my friends have finished the problems. And that gets me all fired up!
Davin P.W.K.
 SMA Pradita Dirgantara 🥉 Bronze Medalist OSN Informatika 2023
Kokocoder played an indispensable role in my OSN journey. Seeing my Kokocoder Troops friends' names on the submission panel gets me motivated every day. Some even managed to solve all problems, and that made me thought, "If they can do it, why can't I?"
Galih Nur Rizqy
 SMA Semesta Semarang | Fasilkom Universitas Indonesia 🥈 Silver Medalist OSN Informatika 2022
Learning at kokocoder made me love competitive programming even more. Kokocoder helped me a lot to improve my skills and become more enthusiastic about learning competitive programming. For me, 2 hours of learning at kokocoder is equivalent to 24 hours of learning at another place.
Roberto Eugenio Sugiarto
 SMAN 1 Wonosobo | Fasilkom Universitas Indonesia 🥇 Gold Medalist OSN Informatika 2022
To me, kokocoder have been a big part of my learning process for the past year. They have done everything right, from learning sessions, mental sessions, and sometimes we held a fun session such as troll contest, and many other. Another big advantage of joining kokocoder, in my opinion, is the fact that we have an active community with people with the same interests as us. This allowed us to have a competitive environment to motivate us getting better. With that being said, Thank you kokocoder for all the fun and amazing experience.
Joshua James
 Surabaya Cambridge School | NTU Singapore 🥇 Gold Medalist KSN Informatika 2021
As someone who isn't experienced in olympiads, Kokocoder really helped me to achieve a win. Aside from high quality teaching processes which made clear to me various algorithms and techniques, the coaches also provide helpful tips that are vital in the competition. Not only that, I am not used to the emotional battlefield in olympiads, it was extremely harsh after an unexpectedly bad performance in Day 1. I thank Kokocoder for recovering my confidence, allowing me to perform much better on the second day.
Ibu Margaretta Wangsa
 Parent of Nathan Allan 🥇 Gold Medalist OSN Informatika 2022
We entrusted our son, Nathan Allan to learn at Kokocoder because the coaches were medalists of OSN, which highlighted their competency. In Kokocoder, they teach lessons that start from the basic to advanced ones. The learning process was very enjoyable and does not get boring at all. Thank you for all the cool coaches, we hope you can keep up the enthusiasm to share more knowledge. Always wishing success for Kokocoder. God bless.

Pertanyaan seputar les OSN Informatika

Berapa biaya les OSN Informatika di Kokocoder?

Biaya tergantung program yang dipilih: kelas reguler, mentoring privat, atau Knight Camp. Hubungi tim Kokocoder lewat WhatsApp untuk info biaya dan jadwal terbaru.

Les OSN Informatika di Kokocoder online atau offline?

Kelas reguler dan mentoring privat berjalan online, jadi bisa diikuti dari seluruh Indonesia. Knight Camp adalah pelatihan offline intensif selama beberapa hari.

Mulai kelas berapa bisa ikut kursus OSN Informatika?

Program ini cocok untuk siswa kelas 8 SMP sampai kelas 11 SMA. Siswa yang belum pernah coding tetap bisa mulai dari dasar pemrograman C++.

Apa bedanya dengan bimbel olimpiade informatika lain?

Pelatih Kokocoder adalah peraih medali OSN, APIO, EGOI, dan IOI yang mengajar competitive programming secara khusus, bukan guru privat umum. Di OSN Informatika 2026, 25 dari 30 medali nasional diraih siswa Kokocoder.

Materi apa saja yang dipelajari?

Dasar pemrograman C++, algoritma dan struktur data, teknik competitive programming, latihan soal OSN-K dan OSN-P, simulasi olimpiade, serta pembahasan soal OSN tahun-tahun sebelumnya.

Konsultasi via WhatsApp