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- Dima and Bacteria2000Codeforcesdsugraphsshortest paths
- Dima and Containers2000Codeforcesconstructive algorithmsgreedyimplementation
- Dima and Salad1900Codeforcesdp
- Dima and Trap Graph2000Codeforcesbinary searchdata structuresdfs and similardsu
- Directed Roads1900Codeforcescombinatoricsdfs and similargraphsmath
- Directing Edges2285CodeChef
- Directing Edges2000Codeforcesconstructive algorithmsdfs and similargraphs
- Director2000Codeforcesconstructive algorithmsgreedy
- Distance Sum2399CodeChef
- Distinct Values2236CodeChef
- Distributed Join1900Codeforcesgreedy
- Diverse Substrings2000Codeforcesdpstringstwo pointers
- Divide and Sum1900Codeforcescombinatoricsmathsortings
- Divide by Three2000Codeforcesdpgreedymathnumber theory
- Dividing Island1900Codeforcesconstructive algorithms
- Dividing Products2322CodeChef
- Divisibility Check2000Codeforces*special
- Divisibility Test1900Codeforcesmath
- Divisible Numbers (hard version)1900Codeforcesbrute forcemathnumber theory
- Divisible Subset2392CodeChef
- Division + LCP (easy version)1900Codeforcesbinary searchdata structuresdphashing
- Divisors2000Codeforcesinteractivemathnumber theory
- Divisors Array (Hard Version)2322CodeChef
- Domain2000Codeforces*specialexpression parsing
- Domino for Young2000Codeforcesdpgreedymath
- Dominoes2000Codeforcesdfs and similargraphs
- Doofish Matrix2389CodeChef
- Doorway2000Codeforcesbinary searchdata structuressortings
- Doremy's Drying Plan (Easy Version)2000Codeforcesbrute forcedata structuresdpgreedy
- Doremy's Pegging Game2000Codeforcescombinatoricsdpmath
- Dot1900Codeforcesdpgames
- Double Permutation Inc.2000Codeforces*specialbinary searchgreedy
- Dr. Evil Underscores1900Codeforcesbitmasksbrute forcedfs and similardivide and conquer
- Drazil and Tiles2000Codeforcesconstructive algorithmsgreedy
- Dream Problem2290CodeChef
- Dreamoon and Sets1900Codeforcesconstructive algorithmsgreedymath
- Drowning2000Codeforcesbinary searchdata structuresmath
- Dual (Hard Version)1900Codeforcesconstructive algorithmsmath
- Dune II: Battle For Arrakis2000Codeforces*specialdata structuresgreedymath
- Dwarves, Hats and Extrasensory Abilities1900Codeforcesbinary searchconstructive algorithmsgeometryinteractive
- Dynamic Inversion2347CodeChef
- Dynamic Problem Scoring2000Codeforcesbrute forcegreedy
- E-mail Addresses1900Codeforcesimplementation
- E-reader Display2000Codeforcesconstructive algorithmsgreedy
- Earning A Profit 2233CodeChef
- Easy Demon Problem1900Codeforcesbinary searchbrute forcedata structuresmath
- Eating1900Codeforcesbinary searchbitmasksbrute forcedata structures
- Edge Split2000Codeforcesbrute forceconstructive algorithmsdfs and similardsu
- Education1900Codeforcesbrute forcedpgreedyimplementation
- Education Reform2000Codeforcesdp
- Ehab and another another xor problem2000Codeforcesbitmasksconstructive algorithmsimplementationinteractive
- Ehab and the Expected XOR Problem1900Codeforcesbitmasksconstructive algorithms
- Elongated Matrix2000Codeforcesbinary searchbitmasksbrute forcedp
- Empty Graph2000Codeforcesbinary searchconstructive algorithmsdata structuresgreedy
- Encoding2351CodeChef
- Encryption (medium)2000Codeforcesdp
- End of Exams1900Codeforcesgreedy
- Enemy is weak1900Codeforcesdata structurestrees
- Engineer Artem2000Codeforces2-satchinese remainder theoremconstructive algorithmsfft
- English2310CodeChef