| 2401 | Startrek | Eugen Nodea | ONI 2017, clasele 11-12 | N/A |
| 2402 | Statistici de ordine | Arhiva Educationala | Arhiva educationala | N/A |
| 2403 | Statiuni | Marius Nicoli | PreOJI 2017 | N/A |
| 2404 | Steins;Gate | Eugenie Daniel Posdarascu | Algoritmiada 2016 - Runda 2, Seniori | N/A |
| 2405 | Stele | Manda David Loren | InfoOltenia 2018 - Clasele 7 - 8 | N/A |
| 2406 | Stergeri | Din Folclor | preONI 2008 Runda 3 | N/A |
| 2407 | Sticle | Mihnea Giurgea | info-arena 1.0 |      2/5 |
| 2408 | Stiva | Emanuela Cerchez | ONI 2008 - baraj | N/A |
| 2409 | Stiva2 | Andrei Ciocan | Infoarena Monthly 2012, Runda 2 | N/A |
| 2410 | Stiva3 | Zoltan Szabo | ONI 2014 Clasa a 10-a | N/A |
| 2411 | Stiva4 | | ad-hoc | N/A |
| 2412 | Stive | Emanuela Cerchez | Lot Juniori 2008 - Baraj 5 | N/A |
| 2413 | Strabunica | Dan Pracsiu | preOJI 2016, clasa a 10-a |      1/5 |
| 2414 | Strada Cramei | Vlad-Andrei Munteanu | Concursul National de Informatica "Adolescent Grigore Moisil" 18 | N/A |
| 2415 | Stramosi | Mircea Bogdan Pasoi | info-arena 1.0 |      3/5 |
| 2416 | Strava | Vlad Duta | ACM ICPC Faza Nationala 2015 | N/A |
| 2417 | Strazi | Adrian Airinei | preONI 2008 Runda 3 | N/A |
| 2418 | Street Crypto | Mihai Calancea | ONIS 2015, Runda Finala | N/A |
| 2419 | Strigat | Din Folclor | Summer Challenge 2007, runda 1 | N/A |
| 2420 | String | Mugurel Ionut Andreica | .campion 2003 |      2/5 |
| 2421 | String Repair | Mihai-Alexandru Dusmanu | Infoarena Monthly 2012, Runda 2 | N/A |
| 2422 | Struti | Filip Cristian Buruiana | preONI 2006 Runda 2 |      3/5 |
| 2423 | Studenti | Adrian Airinei | Algoritmiada 2010, Runda 1 | N/A |
| 2424 | Stup | Perticas Catalin | Grigore Moisil 2011, Clasele 11-12 | N/A |
| 2425 | Stv | Marius Dumitran | FMI No Stress 10 | N/A |
| 2426 | Sub | Tiberiu Danet | Lot 2008 - Piatra Neamt, Baraj1 | N/A |
| 2427 | Subarbore | Cosmin Silvestru Negruseri | Algoritmiada 2012, Runda 2 | N/A |
| 2428 | Subgeom | Andrei Grigorean | ONI 2008, clasa a 10-a | N/A |
| 2429 | Submat | Stelian Ciurea | ONI 2008, clasa a 8-a | N/A |
| 2430 | Submatrix | Andrei Grigorean | ONI 2010, clasele 11-12 | N/A |
| 2431 | Submultimi | Arhiva Educationala | Arhiva educationala | N/A |
| 2432 | Subpermutari | Eugenie Daniel Posdarascu | ONIS 2016 Runda Online | N/A |
| 2433 | Subsecventa de suma maxima | Arhiva Educationala | Arhiva educationala | N/A |
| 2434 | Subsecvente | Vlad Ionescu | Infoarena Monthly 2014, Runda 6 | N/A |
| 2435 | Subsecvențe tripare | Ciprian Oprisa | ad-hoc | N/A |
| 2436 | Subsecvente2 | Marius Stroe | OJI 2013, clasele 11-12 | N/A |
| 2437 | Subset | Mugurel Ionut Andreica | Selectie individuala ACM ICPC, UPB 2009 | N/A |
| 2438 | Subset2 | Eugenie Daniel Posdarascu | .com 2012 Runda 1 |      1/5 |
| 2439 | Subsir | Mircea Bogdan Pasoi | preONI 2005 Runda 1 |      3/5 |
| 2440 | Subsir 2 | Mircea Bogdan Pasoi | preONI 2006 Runda 3 |      3/5 |
| 2441 | Subsir Binar | Mihai Calancea | Algoritmiada 2016 Runda 1 Juniori | N/A |
| 2442 | Subsir crescator maximal | Arhiva Educationala | ad-hoc | N/A |
| 2443 | Subsir100 | Adrian Airinei | Algoritmiada 2009, Runda Finala | N/A |
| 2444 | Subsir1000 | Adrian Airinei | Algoritmiada 2011, Runda 3 | N/A |
| 2445 | Subsiruri | Clara Ionescu | Grigore Moisil By Net 2006 |      1/5 |
| 2446 | Subsiruri 3 | Tudose Vlad Andrei | ONIS 2014, Runda 4 | N/A |
| 2447 | Subsiruri2 | Adrian Airinei | Concursul National Urmasii lui Moisil 2012, Clasa a 10-a | N/A |
| 2448 | Substituții circulare cu element maxim | Tudor Muresan | utcn-2021 | N/A |
| 2449 | Substr | Mihai Patrascu | Lot 2003 |      4/5 |
| 2450 | Sudest | Alin Burta | OJI 2006, Clasa a 10-a | N/A |