Aug 05, 2023
Problems That I Have Written
(Last updated: 2023-12-08)
To keep track of (publicly available) problems I have written so far. Would be updated when new problems are published. Note that most of the problems I have written were used in local contest with no English problem statement. If you still want to read them, I believe most translation tools nowadays e.g Google Translate are already good enough to translate Indonesian to English.
P.s: this post is largely inspired by this.
| No. | Date | Problem | Contest | Comment |
|---|---|---|---|---|
| July 2016 | Ramduel | TOKI Open Contest July 2016 | A troll problem, one liner solution in Python exists | |
| July 2016 | Rammeow | TOKI Open Contest July 2016 | ||
| August 2016 | Friend-Score | Senior CPC CompFest 8 Preliminary Round | ||
| September 2016 | String Seimbang | Junior CPC CompFest 8 Final Round | Very classic bracket matching problem... | |
| September 2016 | Road to Hero | Junior CPC CompFest 8 Final Round | Back then I was fascinated with this kind of binary search | |
| September 2016 | Pohon Kelereng | Senior CPC CompFest 8 Final Round | IIRC I came up with this problem when I misunderstood a CF problem | |
| September 2016 | Huruf Ajaib | Senior CPC CompFest 8 Final Round | Writing this problem was a mistake | |
| September 2016 | Belajar FPB | Senior CPC CompFest 8 Final Round | I made a grave mistake as a problemsetter: the time complexity of my solution depends on a conjecture that I never proved | |
| November 2016 | Domino | TOKI Open Contest November 2016 | solution exists, but I decided to allow digit DP solution | |
| March 2017 | Quick Quiz | TOKI Open Contest March 2017 | ||
| May 2017 | Teka-Teki Cak Lontong | TOKI Open Contest May 2017 | ||
| May 2017 | Wisata Kucing Garing | TOKI Open Contest May 2017 | ||
| May 2017 | Teman Terbaik | TOKI Open Contest May 2017 | Inspired by my bad luck with ATMs around my university | |
| August 2017 | Makan Malam Chanek | Junior + Senior CPC CompFest 9 Preliminary Round | ||
| August 2017 | Faktorunesia | Junior + Senior CPC CompFest 9 Preliminary Round | Still wondering whether it can be solved in subquadratic | |
| August 2017 | Mencari Waifu | Senior CPC CompFest 9 Preliminary Round | ||
| August 2017 | Palindromisme | Senior CPC CompFest 9 Preliminary Round | Troll problem, not as trollish as Ramduel | |
| August 2017 | Dua Sejoli | Senior CPC CompFest 9 Preliminary Round | The modulo is actually useless | |
| August 2017 | Kucing Warna Warni | Senior CPC CompFest 9 Preliminary Round | ||
| September 2017 | Pengurangan Chanek | Junior CPC CompFest 9 Final Round | ||
| September 2017 | Balapan Aneh | Junior CPC CompFest 9 Final Round | ||
| September 2017 | Pagar Indah | Junior CPC CompFest 9 Final Round | ||
| September 2017 | Mencari Gaji | Junior CPC CompFest 9 Final Round | Was written when I was trapped in the middle of nowhere due to heavy rain | |
| September 2017 | Percobaan FPB | Junior CPC CompFest 9 Final Round | ||
| September 2017 | Belanja Robot | Junior CPC CompFest 9 Final Round | ||
| September 2017 | Bersama Waifu | Senior CPC CompFest 9 Final Round | The only geometry problem I have written, and probably one of the hardest problem I have written. Solved with the help of athin. The testcase is pretty weak due to my skill issue | |
| September 2017 | Xor-or | Senior CPC CompFest 9 Final Round | ||
| September 2017 | Menginap | Senior CPC CompFest 9 Final Round | ||
| September 2017 | Pasti Menang! | Senior CPC CompFest 9 Final Round | I found "x2 +1" DP myself before it was popularized in CF | |
| September 2017 | Pertukaran Chanek | Senior CPC CompFest 9 Final Round | ||
| September 2017 | Percobaan Median | Senior CPC CompFest 9 Final Round | ||
| July 2018 | GCD Festival | OSN 2018 | ||
| July 2018 | Kanji for King | TLX Regular Open Contest #1 | ||
| August/September 2018? | Karakter Unik | Junior CPC CompFest X Final Round | ||
| August/September 2018? | Malam Keakraban | Junior CPC CompFest X Final Round | ||
| February 2019 | Substring, Not a Substring | TLX Regular Open Contest #5 | ||
| February 2019 | D-K Tree | TLX Regular Open Contest #5 | Co-written with athin | |
| February 2019 | Longest Identic Subarray | TLX Regular Open Contest #5 | ||
| February 2019 | Absolute Pairs | TLX Regular Open Contest #5 | ||
| March 2019 | K FPB | Ngoding Seru 2019 Round 1B | ||
| March 2019 | Pembagian Tim | Ngoding Seru 2019 Round 2 | ||
| March 2019 | Komunikasi Grup | Ngoding Seru 2019 Round 2 | Never write something with time complexity again... | |
| April 2019 | Median Gabungan | Ngoding Seru 2019 Final Round | ||
| June 2019 | The Last Verse (feat. Azura) | TLX Regular Open Contest #6 | ||
| June 2019 | The Last Question (feat. Aoyagi) | TLX Regular Open Contest #6 | ||
| June 2019 | The Last Trip (feat. Ayaze) | TLX Regular Open Contest #6 | ||
| October 2019 | Sending Blessings | Indonesia National Contest 2019 | Tedious | |
| October 2019 | Go To Goal | Indonesia National Contest 2019 | ||
| November 2020 | Power Link | Indonesia National Contest 2020 | ||
| December 2020 | Forbidden Card | ICPC Jakarta 2020 | Inspired by my lazy strategy in Undercover | |
| December 2020 | Tree Beauty | ICPC Jakarta 2020 | ||
| October 2021 | Ketahanan Website | Gemastik 2021 Final Round | Honestly the problem description makes zero sense | |
| October 2021 | Rekonstruksi Pohon String | Gemastik 2021 Final Round | ||
| November 2021 | Greedy Knapsack | ICPC Jakarta 2021 | One of my best problem | |
| November 2021 | Bicycle Tour | ICPC Jakarta 2021 | ||
| October 2022 | Array K-Cantik | Gemastik 2022 Preliminary Round | ||
| October 2022 | Mengurutkan Karakter | Gemastik 2022 Preliminary Round | ||
| October 2022 | Pendakian Gunung | Gemastik 2022 Preliminary Round | ||
| October 2022 | Soal Query Digit | Gemastik 2022 Preliminary Round | ||
| November 2022 | Permutation Construction | Indonesia National Contest 2022 | ||
| November 2022 | OR dari Subhimpunan | Gemastik 2022 Final Round | ||
| November 2022 | Jika Saya Menyebutkan X, Maka... | Gemastik 2022 Final Round | ||
| November 2022 | Menghitung Pohon String | Gemastik 2022 Final Round | One of my hardest problem. Feels wasted to be used in this contest... | |
| November 2022 | Substring Sort | ICPC Jakarta 2022 | ||
| November 2022 | City Hall | ICPC Jakarta 2022 | ||
| November 2022 | Short Function | ICPC Jakarta 2022 | ||
| August 2023 | Sharing Lapis Talas | OSN 2023 | Coming up with the checker is harder than solving the problem; Co-written with prabowo | |
| September 2023 | Listrik Perumahan | Gemastik 2023 Final Round | ||
| September 2023 | Soal Query XOR | Gemastik 2023 Final Round | I regret writing this | |
| October 2023? | Twin Subsequence | Ideafuse 2023 Qualification Round | ||
| November 2023 | Critical Roads | Indonesia National Contest 2023 | ||
| December 2023 | Contingency Plan 2 | ICPC Jakarta 2023 | A humbling experience | |
| December 2023 | Count BFS Graph | ICPC Jakarta 2023 | ||
| December 2023 | Deck-Building Game | ICPC Jakarta 2023 |