I reached Master on Codeforces and Platinum on USACO in fall 2023, and began representing my school at onsite competitions around the same time. More recently I’ve focused on AtCoder, which fits a busier schedule with more frequent contests and a math and observation focused style I prefer over Codeforces.
I’ve also given back to my community. I’ve written problems for public contests including TJIOI and BioCode, run by the TJHSST Computer Team and Bioinformatics clubs I captained from 2023 to 2025, and went from USACO participant to a coach on its problemsetting team - proposing problems and preparing and testing others’ for the monthly contests taken by thousands of students. I also teach as an instructor at AlphaStar Academy, where I’ve built curriculum and recorded USACO solution videos.
Performances
I started out on Codeforces before shifting most of my focus to USACO and AtCoder, whose more math-focused problem styles I prefer.
Codeforces
- Handle: avnithv ↗ — peak rating 2203, Master
- Codeforces Round 896 (Div. 2) ↗ (09/10/2023) — rank 4, +282
- Codeforces Round 906 (Div. 1) ↗ (10/28/2023) — rank 177, +129
USACO
- Platinum (December 2023)
AtCoder
- Handle: avnithv ↗ — current rating 1804, 1 Kyu
- ABC 458 ↗ (05/16/2026) — rank 159, performance 2296, +151
Onsites
| Contest | Date | Location | Result |
|---|---|---|---|
| ICPC Latam Championship | March 2026 | Santiago, Chile | 9th place, Bronze medal (unofficial) |
| University of Maryland HSPC | February 2025 | College Park, Maryland | 1st place, $1400 prize |
| Virginia Commonwealth University HSPC | May 2024 | Richmond, Virginia | 1st place, $100 prize |
| University of Maryland HSPC | February 2024 | College Park, Maryland | 1st place, $2000 prize |
Problems I’ve Written
Most of these live in private Codeforces groups — join the BioCode group ↗ and the TJIOI 2024 ↗ and TJIOI 2025 ↗ groups to open the problem links below. Difficulty is on a 5-star scale and the highlighted problems are my personal favorites.
| Problem | Contest | Difficulty | Author | Preparer | Notes | Link |
|---|---|---|---|---|---|---|
| Photosynthesis | BioCode 2023 | ★ | ✓ | ✓ | link ↗ | |
| DNA Transcription | BioCode 2023 | ★ | ✓ | ✓ | link ↗ | |
| RNA Translation | BioCode 2023 | ★★ | ✓ | ✓ | link ↗ | |
| Bacteria | BioCode 2023 | ★★ | ✓ | ✓ | link ↗ | |
| Phylogenetic Tree | BioCode 2023 | ★★★ | ✓ | ✓ | link ↗ | |
| Bessie’s Interview | USACO 2024 Open Silver | ★★★ | ✓ | ✓ | My first USACO problem — I came up with it while waiting in line. | link ↗ |
| Neural Network | BioCode 2024 | ★ | ✓ | ✓ | Probably my “ideal” easy problem. | link ↗ |
| Flipped DNA | BioCode 2024 | ★ | ✓ | ✓ | link ↗ | |
| Predator or Prey | BioCode 2024 | ★★ | ✓ | ✓ | link ↗ | |
| Powerhouse of the Cell? | BioCode 2024 | ★★★ | ✓ | ✓ | Cute and simple. | link ↗ |
| Wildfires | BioCode 2024 | ★★★ | ✓ | ✓ | link ↗ | |
| Cut and Splice | BioCode 2024 | ★★★ | ✓ | ✓ | Slightly contrived, but I like how it looks messy at first and simplifies nicely. | link ↗ |
| Bacteria Colony | BioCode 2024 | ★★★ | ✓ | ✓ | link ↗ | |
| Evolutionary Pathways | BioCode 2024 | ★★★★ | ✓ | ✓ | link ↗ | |
| Zygote Combinations | BioCode 2024 | ★★★★ | ✓ | ✓ | link ↗ | |
| A + B = Cookie | TJIOI 2024 | ★★★★ | ✓ | ✓ | A cancer constructive problem, the solution isn’t even satisfying. Probably my hardest problem in terms of time to solve. | link ↗ |
| Cookie Cutting | TJIOI 2024 | ★ | ✓ | ✓ | link ↗ | |
| Cookie Filling | TJIOI 2024 | ★★★ | ✓ | ✓ | link ↗ | |
| Cookie Shuffle | TJIOI 2024 | ★★ | ✓ | ✓ | link ↗ | |
| Bessie’s Function | USACO 2025 Silver/Gold | ★★★ | ✓ | ✓ | I’m surprised this got accepted. | link ↗ |
| Monkey Island | BioCode 2025 Round 1 | ★ | ✓ | ✓ | link ↗ | |
| Dinosaur Battle Royale | BioCode 2025 Round 1 | ★★★ | ✓ | ✓ | link ↗ | |
| Molecular interactions | BioCode 2025 Round 2 | ★★ | ✓ | ✓ | link ↗ | |
| Trophic Pathways | BioCode 2025 Round 2 | ★★★ | ✓ | ✓ | link ↗ | |
| Monkey Mutations | BioCode 2025 Round 2 | ★★★★ | ✓ | ✓ | Yet another contrived combo problem. | link ↗ |
| Cookie Monster Sorts | TJIOI 2025 | ★★ | ✓ | ✓ | link ↗ | |
| Cookie Arrangement | TJIOI 2025 | ★★ | ✓ | ✓ | Inspired by a real-life scenario, though I’ve forgotten the details. | link ↗ |
| Lock Combinations | TJIOI 2025 | ★★★★ | ✓ | Linear algebra came in handy here. | link ↗ | |
| Cookie XOR | TJIOI 2025 | ★★ | ✓ | ✓ | link ↗ | |
| Cookie Scoring | TJIOI 2025 | ★★★★ | ✓ | ✓ | Very representative of my competitive programming style. | link ↗ |
| Dynamic Instability | USACO 2026 Platinum | ★★★★ | ✓ | ✓ | Inspired by my freshman bio class — as you probably weren’t able to tell from the name. | link ↗ |
| Perfect Binary Trees | USACO 2026 Open Platinum | ★★★★ | ✓ | ✓ | My best problem. Funnily enough, ¾ of my USACO problems are tree-combo problems. | link ↗ |
| True And False | BioCode 2026 | ★ | ✓ | link ↗ | ||
| Operator | BioCode 2026 | ★ | ✓ | link ↗ | ||
| Inhibitor Cascades (Part 1) | BioCode 2026 | ★★ | ✓ | link ↗ | ||
| Telephone | BioCode 2026 | ★★ | ✓ | link ↗ | ||
| Cell Ball Run | BioCode 2026 | ★★ | ✓ | link ↗ | ||
| DNA is War: Ultra Genetic | BioCode 2026 | ★★★★ | ✓ | I like setting troll problems with this algorithm, if you couldn’t tell. | link ↗ |
Solution Videos - AlphaStar Academy
As an instructor at AlphaStar Academy, I record solution videos walking through USACO contest problems for the USACO Training channel ↗. I covered Silver for 2026 Contest 2, and Silver and Gold for 2026 Contest 3.
| Problem | Contest / Division | Link |
|---|---|---|
| Cowlibi 2 | 2026 Contest 2 — Silver | watch ↗ |
| Declining Invitations | 2026 Contest 2 — Silver | watch ↗ |
| Clash | 2026 Contest 3 — Silver | watch ↗ |
| Milk Buckets | 2026 Contest 3 — Silver | watch ↗ |
| Point Elimination | 2026 Contest 3 — Silver | watch ↗ |
| Good Cyclic Shifts | 2026 Contest 3 — Gold | watch ↗ |
| Picking Flowers | 2026 Contest 3 — Gold | watch ↗ |
| Random Tree Generation | 2026 Contest 3 — Gold | watch ↗ |