| 701 | Diagonala | Cosmin Gheorghe | Algoritmiada 2010, Runda Finala | N/A |
| 702 | Diagonale | Andrei Grigorean | Infoarena Monthly 2012, Runda 2 | N/A |
| 703 | Diamant | Dan-Ionut Fechete | ONI 2006 |      1/5 |
| 704 | Diamante | Bogdan Gaza | Concursul National Urmasii lui Moisil 2011 - Clasa a 10-a | N/A |
| 705 | Diametru | Adrian Budau | Algoritmiada 2015, Runda 3 | N/A |
| 706 | Diametrul unui arbore | Arhiva Educationala | Arhiva educationala | N/A |
| 707 | Diapazon | Andrei Popa, Eugenie Daniel Posdarascu | Algoritmiada 2016, Runda Finala, Seniori | N/A |
| 708 | Dice Array | Tulba-Lecu Gabriel | Algoritmiada 2022, Runda 3 | N/A |
| 709 | Dicsi | Eugenie Daniel Posdarascu | FMI No Stress 2017 | N/A |
| 710 | Dictator | Toma Ariciu | ONI 2026, Baraj Seniori, ziua 2 | N/A |
| 711 | Dictree | Mihai Patrascu | Selectie echipe ACM ICPC, UPB 2008 | N/A |
| 712 | Diez | Stefan Negrus | Urmasii lui Moisil 2016, Clasele 11-12 | N/A |
| 713 | Dif2 | Gheorghe Manolache | ONI 2016, clasa a 9-a | N/A |
| 714 | Diferente | Tamio-Vesa Nakajima | ad-hoc | N/A |
| 715 | Diff | Cosmin Gheorghe | ONI 2010, clasele 11-12 | N/A |
| 716 | Difprim | Marius Dumitran | FMI No Stress 2010 | N/A |
| 717 | Digitsum-multiplu | Robert Varga | ad-hoc | N/A |
| 718 | Dinozaur | Mihai Calancea | Infoarena Monthly 2012, Runda 6 | N/A |
| 719 | Dinti | Cosmin Gheorghe | Algoritmiada 2010, Runda 2 | N/A |
| 720 | Dir | Alin Burta | OJI 2007, Clasa a 10-a | N/A |
| 721 | Dirichlet | Radu Stefan Voroneanu | .com 2011 | N/A |
| 722 | Disconnect | Adrian Vladu | Algoritmiada 2015 Runda 1 | N/A |
| 723 | Dist | Emanuela Cerchez | Baraj ONI 2007 | N/A |
| 724 | Dist2 | Andrei Grigorean | ONI 2008 - baraj | N/A |
| 725 | DistanceSum | Andrei Heidelbacher | Happy Birthday Infoarena 2014 | N/A |
| 726 | Distanta | Dragos Oprica | ACM 2014 | N/A |
| 727 | Distante | Mircea Bogdan Pasoi | preONI 2006 Runda 1 |      2/5 |
| 728 | Distincte | Mircea Bogdan Pasoi | preONI 2007, Runda 4 |      4/5 |
| 729 | Distincte2 | Mihai-Alexandru Dusmanu | Infoarena Monthly 2012, Runda 3 | N/A |
| 730 | Distractie | Din Folclor | ACM ICPC Faza Nationala 2015 | N/A |
| 731 | Div | Nistor Eugen Mot | ONI 2008, clasa a 9-a | N/A |
| 732 | Div3 | Dan Pracsiu | ONI 2007, clasa 8 | N/A |
| 733 | Div4 | Teodor Plop | Infoarena Monthly 2014, Runda 2 | N/A |
| 734 | Divinitate | Adrian Andrei Rosu, Dan Constantin Spatarel | ONI 2026, Baraj Seniori, ziua 2 | N/A |
| 735 | Divisibility | Daniel Atanasov | Shumen 2016 - Seniori | N/A |
| 736 | Divisorgraph | Mihai Calancea | Algoritmiada 2014, Runda Finala | N/A |
| 737 | Diviz | Filip Cristian Buruiana | preONI 2007, Runda 1 |      2/5 |
| 738 | Divizor si multiplu | Mugurel Ionut Andreica | Happy Coding 2 |      1/5 |
| 739 | Divizori | Cosmin Silvestru Negruseri | Algoritmus |      3/5 |
| 740 | Divizori Primi | Adrian Diaconu | preONI 2006 Runda 3 |      2/5 |
| 741 | Divizori2 | Adrian Budau, Eugenie Daniel Posdarascu, Mihai Calancea | Algoritmiada 2015 Runda Finala | N/A |
| 742 | Divk | Filip Cristian Buruiana | preONI 2006 Runda Finala |      1/5 |
| 743 | Divseq | Mihai Calancea | Algoritmiada 2016 - Runda 4 - Juniors | N/A |
| 744 | Djok | Adrian Budau, Tamio-Vesa Nakajima | Algoritmiada 2019 Runda Finala | N/A |
| 745 | Dk | Cezar Mocan | Autumn Warmup 2007, Runda 3 | N/A |
| 746 | Dl. Boss | Miriam Costan | FMI No Stress 2017 | N/A |
| 747 | Dlog | Cosmin Gheorghe | Infoarena Cup 2012 | N/A |
| 748 | Dmg | Sorin Stancu-Mara | Stelele Informaticii 2005, clasele 11-12 |      5/5 |
| 749 | Dmin2 | Andrei Grigorean | Algoritmiada 2013, Runda 2 | N/A |
| 750 | Doctor Who | Bogdan Iordache | InfoOltenia 2018 - Clasele 11 - 12 Echipe | N/A |