| 1301 | Largest Root | Andrei Mogos | ACM ICPC Faza Nationala 2015 | N/A |
| 1302 | Laser | Adrian Diaconu, Tiberiu-Lucian Florea | preONI 2007, Runda 4 |      5/5 |
| 1303 | Laundering | Mihai Calancea | ACM-ICPC Faza Nationala 2018 | N/A |
| 1304 | Lautari | Andrei Arnautu, Eugenie Daniel Posdarascu | FMI No Stress 8 | N/A |
| 1305 | Lazy | Andrei Parvu | RMMS 2011 - Ziua 1 | N/A |
| 1306 | LCDR | Marius Dumitran, Perticas Catalin | Lot Sibiu 2011 | N/A |
| 1307 | Le Mans | Tulba-Lecu Gabriel | ONSEPI 2021, clasa a 9-a | N/A |
| 1308 | Leduri | Lucian Bicsi, Pit-Rada Vasile | ONI 2016, clasa a 9-a | N/A |
| 1309 | Leftmax | Tamio-Vesa Nakajima | OJI 2020, clasa a 10-a | N/A |
| 1310 | Lenes | Nistor Eugen Mot | ONI 2015, clasa a 9-a | N/A |
| 1311 | Lesbulan | Cosmin Silvestru Negruseri | Bursele Agora 2006 |      5/5 |
| 1312 | Lexicografic | Andrei Constantinescu | ONI 2019, clasele 11-12, ziua 1 | N/A |
| 1313 | Lian Yu | Chichirim George, Patrick Sava | Concursul National de Informatica "Adolescent Grigore Moisil" 16 |      5/5 |
| 1314 | Licenta | Alex Palcuie | FMI No Stress 6 | N/A |
| 1315 | Lift | Valentin Rosca | Concursul Naţional de Informatică Urmaşii lui Moisil 2017 | N/A |
| 1316 | Light | Radu Toma | ad-hoc | N/A |
| 1317 | Light2 | Filip Cristian Buruiana | RMMS 2011 - Ziua 1 | N/A |
| 1318 | Linegraph | Andrei Constantinescu | ONI 2019, clasele 11-12, ziua 2 | N/A |
| 1319 | Linii | Alexandru Cazacu | Lot Botosani 2012 - Baraj 2 Seniori | N/A |
| 1320 | Links | | ad-hoc | N/A |
| 1321 | Lista lui Andrei | Daniel Pasaila | preONI 2006 Runda 4 |      1/5 |
| 1322 | Liste | Marius Nicoli | Lot Sibiu 2011 - Baraj 2 Juniori | N/A |
| 1323 | Litere | Andrei Grigorean | preONI 2008 Runda 2 | N/A |
| 1324 | Litere2 | Teodor Plop | Infoarena Monthly 2014, Runda 5 | N/A |
| 1325 | Livada | Radu Boriga | OJI 2010, clasa a 9-a | N/A |
| 1326 | Livada3 | Mircea Lupse-Turpan | ONI 2016, clasa a 9-a | N/A |
| 1327 | Lkperm | Bogdan-Cristian Tataroiu, Cosmin Gheorghe | Algoritmiada 2010, Runda Finala | N/A |
| 1328 | Locala | Mihai Calancea | Algoritmiada 2017, Runda Finala, Juniors | N/A |
| 1329 | Log | Stelian Ciurea | ONI 2007, clasele 11-12 | N/A |
| 1330 | Logic | Adrian Nita, Maria Nita | ONI 2006, clasa 10 | N/A |
| 1331 | Logic2 | Valentin Gheorghita | Lista lui Francu | N/A |
| 1332 | Logic3 | Alin Burta | OJSEPI 2021, clasa a 9-a | N/A |
| 1333 | Logik | Stelian Chichirim | FMI No Stress 9 Warmup | N/A |
| 1334 | Logs | Cosmin Silvestru Negruseri | CEOI 2009 | N/A |
| 1335 | Long Story Short | Eugenie Daniel Posdarascu | Algoritmiada 2017, Runda 1 | N/A |
| 1336 | Lost | Mugurel Ionut Andreica | Romanian Open Contest, TIMUS 2001 | N/A |
| 1337 | Lost In Dristor 2 | Vlad-Mihai Bogdan | IIOT 2022-23 Runda 1 | N/A |
| 1338 | Lot ACM | Ciprian Oprisa | ad-hoc | N/A |
| 1339 | Loterie | Ionut Anghelina | FMI No Stress 10 | N/A |
| 1340 | Loto | Mircea Bogdan Pasoi | preONI 2004 |      2/5 |
| 1341 | Loto2 | Mihai-Alexandru Dusmanu | Infoarena Monthly 2012, Runda 12 | N/A |
| 1342 | Lowest Common Ancestor | Arhiva Educationala | Arhiva educationala | N/A |
| 1343 | Lpaths | Stefan Dascalescu | IIOT 2021-22 Runda 4 | N/A |
| 1344 | Lru | Adrian Panaete, Alexandru Cazacu | Lot Baia Mare 2013 - Baraj 2 Seniori | N/A |
| 1345 | Lsort | Mugurel Ionut Andreica | ONI 2005, clasele 11-12 | N/A |
| 1346 | Lucky7 | Tamio-Vesa Nakajima | Empowersoft 2019 | N/A |
| 1347 | Ludo | Iliyan Yordanov | Shumen 2019 Juniori | N/A |
| 1348 | Luff | Mihai Popa | .com 2012 Runda 3 | N/A |
| 1349 | Luffpar | Mihai Popa | InfoOltenia 2018 - Clasele 11 - 12 | N/A |
| 1350 | LuffXor | Mihai Popa | PreOJI 2017 | N/A |