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- DeadLee2400Codeforcesdata structuresdfs and similargreedyimplementation
- Deadpool and his COOLEST Problem Ever2636CodeChef
- Dearrange sorting2882CodeChef
- Death DBMS2600Codeforcesdata structuresstring suffix structuresstringstrees
- Deck-Building Game2500Codeforcesdivide and conquermath
- Decreasing Game2400Codeforcesconstructive algorithmsdfs and similardpgreedy
- Deduction Queries2400Codeforcesdata structuresdsu
- Defeating Beerus2728CodeChef
- Defend the Recipe2895CodeChef
- Defender of Childhood Dreams2500Codeforcesbitmasksconstructive algorithmsdivide and conquer
- Defining Macros2600Codeforcesdpexpression parsingimplementation
- Degree Set2500Codeforcesconstructive algorithmsgraphsimplementation
- Deja Vu2866CodeChef
- Delete The Array2738CodeChef
- Deleting Numbers2600Codeforcesinteractivemathnumber theory
- Delicious Dessert2400Codeforcesbinary searchdsuhashingmath
- Delivering Carcinogen2400Codeforcesbinary searchgeometry
- Delivery Club2600Codeforcesbinary searchdata structuresdp
- Departments (Hard Version)2825CodeChef
- Deputies2500Codeforcesconstructive algorithmsgraphsgreedyimplementation
- Desert2700Codeforcesdata structuresgraphs
- Design Tutorial: Change the Goal2700Codeforcesconstructive algorithmsmathmatrices
- Destiny2500Codeforcesdata structuresprobabilities
- Destroy the Colony2600Codeforcescombinatoricsdpmath
- Deterministic Heap (Easy Version)2400Codeforcescombinatoricsdpmathtrees
- Developing Game2400Codeforcesdata structures
- Devu and most energetic minion2686CodeChef
- Devus and their voting system2668CodeChef
- Diadrash (Hard Version)2500Codeforcesbinary searchinteractivemathsortings
- Diameter Cuts2400Codeforcescombinatoricsdfs and similardptrees
- Different variables2500Codeforces*special
- Difficult Mountain2700Codeforcesdata structuresdpgreedysortings
- Digit Longest Increasing Subsequences2828CodeChef
- Digit Multiplication By K2666CodeChef
- Digit Tree2700Codeforcesdfs and similardivide and conquerdsutrees
- Digital Village (Hard Version)2500Codeforcesdata structuresdpdsugraphs
- Digits2500Codeforcesbrute forceimplementationmath
- Dima and Figure2400Codeforcesdp
- Dima and Game2600Codeforcesdpgames
- Dish Shopping2500Codeforcesdata structuresdivide and conquer
- Disjoint Triangles2700Codeforcesgeometry
- Disjoint XOR2700CodeChef
- Distance Learning Courses in MAC2400Codeforcesbitmasksbrute forcedata structuresgreedy
- Distance Tree (easy version)2400Codeforcesbinary searchdata structuresdfs and similargraphs
- Distance Tree (hard version)2700Codeforcesbinary searchdfs and similarshortest pathstrees
- Distant Relatives2809CodeChef
- Distinct GCDs (Easy Version)2600Codeforcesconstructive algorithmsgraphsmathnumber theory
- Distinct Neighbours 2774CodeChef
- Distinct Paths2700Codeforcesbrute forcecombinatorics
- Distinct Rows in Submatrices2607CodeChef
- Distinctive Roots in a Tree2500Codeforcesdata structuresdfs and similardptrees
- Divan and a Cottage2600Codeforcesbinary searchdata structures
- Diverse Segments2600Codeforcesdata structurestwo pointers
- Divide OR Conquer2400Codeforcesbinary searchbitmasksdata structuresdp
- Divide Square2400Codeforcesdata structuresgeometryimplementationsortings
- Divide The Students2700Codeforcesbrute force
- Divide or die2841CodeChef
- Divide the Set2696CodeChef
- Divide, XOR, and Conquer2600Codeforcesbitmasksdpmath
- Dividing Kingdom2500Codeforcesbinary searchbrute forcedata structures