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- DIY Garland2200Codeforcesconstructive algorithmsgreedytrees
- DNA Evolution2100Codeforcesdata structuresstrings
- DZY Loves FFT2300Codeforcesprobabilities
- Dabbling in Distribution2582CodeChef
- Daleks' Invasion (medium)2100Codeforcesdfs and similargraphsshortest pathstrees
- Danger of Mad Snakes2300Codeforcescombinatoricsdpmath
- Daniel and Spring Cleaning2300Codeforcesbitmasksbrute forcecombinatoricsdp
- Darth Vader and Tree2200Codeforcesdpmatrices
- Dating2200Codeforcesgreedysortingstrees
- Dating2300Codeforcesbrute forcedfs and similargraphstrees
- Deciphering2300Codeforcesflowsgraph matchings
- Decomposition2300Codeforcesbinary searchbrute forcedata structuresdivide and conquer
- Deconstruction Tree2100Codeforcescombinatoricsdata structuresdpgraphs
- Decreasing Heights2200Codeforcesbrute forcedp
- Decreasing Perimeter2508CodeChef
- Decryption2100Codeforcesconstructive algorithmsimplementationmathnumber theory
- Decypher the String2200Codeforcesbitmaskschinese remainder theoremconstructive algorithmsinteractive
- Defacing Score2449CodeChef
- Degenerate Matrix2100Codeforcesbinary searchmath
- Deja Vu2574CodeChef
- Delete a Segment2300Codeforcesbrute forceconstructive algorithmsdata structuresdp
- Deletion of Repeats2200Codeforcesgreedyhashingstring suffix structures
- Delicious Queries2484CodeChef
- Delivery Bears2200Codeforcesbinary searchflowsgraphs
- Demiurges Play Again2200Codeforcesdfs and similardpmathtrees
- Departments (Easy Version)2400CodeChef
- Desk Disorder2100Codeforcescombinatoricsdfs and similardsugraphs
- Destroy it!2100Codeforcesdpimplementationsortings
- Destroying Roads2100Codeforcesconstructive algorithmsgraphsshortest paths
- Destructive Nim2496CodeChef
- Determine Winning Islands in Race2100Codeforcesdata structuresdpgraphsgreedy
- Devu and Birthday Celebration2100Codeforcescombinatoricsdpmath
- Devu and Flowers2300Codeforcesbitmaskscombinatoricsnumber theory
- Devu and Manhattan Distance2522CodeChef
- Devu and his three Hands2420CodeChef
- Devu, his friends and birthday gifts2519CodeChef
- Diadrash (Easy Version)2100Codeforcesbinary searchbrute forcedivide and conquerimplementation
- Different Subsets For All Tuples2300Codeforcescombinatoricsmath
- Different Trips2548CodeChef
- Difficult Choice2497CodeChef
- Digit Space2554CodeChef
- Digital Village (Easy Version)2300Codeforcesbrute forcedata structuresdfs and similardp
- Digital Wallet2300Codeforcesdpgreedy
- Digits2100Codeforcesdpmathnumber theory
- Dima and Horses2200Codeforcescombinatoricsconstructive algorithmsgraphs
- Dima and Kicks2300Codeforcesbrute forcedsugraphsimplementation
- Dima and Magic Guitar2200Codeforcesbrute forceimplementationmath
- Dinner Party Socializing2405CodeChef
- Discarding Game2300Codeforcesdpgreedytwo pointers
- Discrete Centrifugal Jumps2200Codeforcesdata structuresdpgraphs
- Dispute2100Codeforcesdfs and similargraphsgreedy
- Distance to Different2300Codeforcescombinatoricsdpmath
- Distributing Parts 2100Codeforcesgreedysortings
- Divan and Kostomuksha (easy version)2100Codeforcesdpnumber theory
- Divan and Kostomuksha (hard version)2300Codeforcesdpnumber theory
- Diverging Directions2100Codeforcesdata structuresdfs and similartrees
- Divide Candies2480CodeChef
- Divide Points2300Codeforcesconstructive algorithmsgeometrymath
- Dividing the Students2471CodeChef
- Divisibility Rules2300Codeforcesmathnumber theory