| 1201 | Jap | Bogdan-Cristian Tataroiu | Algoritmiada 2009, Runda 2 | N/A |
| 1202 | Jap2 | Bogdan-Cristian Tataroiu | Algoritmiada 2010, Runda 2 | N/A |
| 1203 | JB | Marius Dumitran | Lot Sibiu 2011 | N/A |
| 1204 | Jetoane | Adrian Pintea | ONI 2007, clasa 7 | N/A |
| 1205 | Jetoane 2 | Bogdan Alexandru Stoica | Winter Challenge 2008, Runda 1 | N/A |
| 1206 | Jimmy | Mugurel Ionut Andreica | Selectie echipe ACM ICPC, UPB 2007 | N/A |
| 1207 | Jjoe | Mugurel Ionut Andreica | Fall Contest #2, SGU 2002 | N/A |
| 1208 | Jmenoasa | Andrei Grigorean | Algoritmiada 2009, Runda Finala | N/A |
| 1209 | Joben | Paul-Dan Baltescu | Algoritmiada 2010, Runda 3 | N/A |
| 1210 | Jobs | Mugurel Ionut Andreica | .campion 2005 | N/A |
| 1211 | Joc | Mircea Bogdan Pasoi | preOJI 2004 |      2/5 |
| 1212 | Joc 18 | Tudose Vlad Andrei | ACM 2014 | N/A |
| 1213 | Joc pe graf | Valeriu Motroi | Romanian Collegiate Programming Contest 2019 | N/A |
| 1214 | Joc pe grid | Bogdan Alexandru Stoica | Winter Challenge 2008, Runda 2 | N/A |
| 1215 | Joc10 | Adriana Simulescu | ONI 2009 clasa a 9-a | N/A |
| 1216 | Joc11 | Din Folclor | Summer Challenge 2009, Runda 1 | N/A |
| 1217 | Joc13 | Constantin Galatan | OJI 2010, clasele 11-12 | N/A |
| 1218 | Joc14 | Clara Ionescu | Grigore Moisil 2010, clasele 7-8 | N/A |
| 1219 | Joc15 | Alin Burta | Lot Arad 2011 - Baraj 3 Juniori | N/A |
| 1220 | Joc17 | Vlad Duta | ONIS 2014, Runda 4 | N/A |
| 1221 | Joc19 | Alin Burta | ONI 2014, clasa a 10-a |      2/5 |
| 1222 | Joc2 | Cosmin Silvestru Negruseri | Bursele Agora 2006 |      4/5 |
| 1223 | Joc3 | Daniel Pasaila | Happy Coding 2006 |      3/5 |
| 1224 | Joc4 | Ciprian Cana | Algoritmus, runda 6 |      5/5 |
| 1225 | Joc5 | Tiberiu-Lucian Florea | ONI 2007, clasele 11-12 | N/A |
| 1226 | Joc6 | Adrian Nita, Maria Nita | Baraj 2008 gimnaziu | N/A |
| 1227 | Joc7 | Adrian Pintea | ONI 2008, clasa a 7-a | N/A |
| 1228 | Joc8 | Clara Ionescu | Grigore Moisil 2008, clasele 5-6 | N/A |
| 1229 | Joc9 | Carmen Minca | OLI 2009, Bucuresti, clasele 11-12 | N/A |
| 1230 | JocDeSah | Daniela Alexandra Crisan | RAUCoder 2020 | N/A |
| 1231 | Jocs | Andrei Parvu | Lot Sibiu 2011 | N/A |
| 1232 | Joctv | Radu Boriga | OLI 2006, Bucuresti, clasele 11-12 | N/A |
| 1233 | Jocul | Clara Ionescu | Grigore Moisil By Net 2006 |      1/5 |
| 1234 | Jocul Flip | Mircea Bogdan Pasoi | info-arena 1.0 |      1/5 |
| 1235 | Jocul NIM | Arhiva Educationala | Arhiva Educationala | N/A |
| 1236 | Jocul2 | Dan Constantin Spatarel | Tabăra ICHB 2012, Ziua 2, Grupa 2 | N/A |
| 1237 | Joculet | Flaviu Pepelea | FMI No Stress 2010 | N/A |
| 1238 | Johnie | Daniel Pasaila | .campion 2007 |      4/5 |
| 1239 | Jolteon | Adrian Budau, Teodor Ionescu | Lot Seniori Alexandria, 2017, baraj 6 | N/A |
| 1240 | Jsched | Mugurel Ionut Andreica | Selectie individuala ACM ICPC, UPB 2009 | N/A |
| 1241 | Jstc | Cosmin Gheorghe | Algoritmiada 2009, Runda 1 | N/A |
| 1242 | Jucărie | Ciprian Oprisa | ad-hoc | N/A |
| 1243 | Jucarii | Catalin Francu | Lot Ploiești Juniori 2026, Baraj 2 | N/A |
| 1244 | Judete | Dan-Ionut Fechete | .campion 2005 | N/A |
| 1245 | Jungla | Emanuela Cerchez | Lot Alba Iulia 2004 | N/A |
| 1246 | K Aparitii | Daniel Dumitran | Infoarena Monthly 2014, Runda 1 | N/A |
| 1247 | K-BubbleSort | Eugenie Daniel Posdarascu | Algoritmiada 2015, Runda 2 |      2/5 |
| 1248 | K-Lexicografic | Eugenie Daniel Posdarascu | Algoritmiada 2016 - Runda 2, Juniori | N/A |
| 1249 | K1 | Victor Manz | Lot Juniori 2009 - Baraj 3 | N/A |
| 1250 | Kalindrome | William Di Luigi | IIOT 2021-22 Runda 2 | N/A |