CodeSearch
pick a problem · learn it with an AI tutor — hints, not spoilers
37,000 problems · all sources
- Powered Parameters1673CodeChef
- Powers Of Two1400Codeforcesbitmasksgreedy
- Prefix Flip (Easy Version)1300Codeforcesconstructive algorithmsdata structuresstrings
- Prefix Permutation Sums1300Codeforcesimplementationmath
- Prefix Suffix Inequality1714CodeChef
- Prefix Zeros1790CodeChef
- Prefixing1736CodeChef
- Preparing Olympiad1400Codeforcesbitmasksbrute force
- Presents1300Codeforcesimplementation
- Prime Matrix1300Codeforcesbinary searchbrute forcemathnumber theory
- Prime Permutation1300Codeforcesimplementationnumber theorystrings
- Problem Sort1601CodeChef
- Problems for Round1300Codeforcesgreedyimplementation
- Product Queries1300Codeforcesdpmathnumber theoryshortest paths
- Product Sum Arrays (Easy)1603CodeChef
- Product of Three Numbers1300Codeforcesgreedymathnumber theory
- Productive Meeting1400Codeforcesconstructive algorithmsgraphsgreedy
- Progress Bar1300Codeforcesimplementationmath
- Project Spoon1795CodeChef
- Promocodes with Mistakes1400Codeforces*specialbrute forceconstructive algorithmsimplementation
- Punctuation1300Codeforcesimplementationstrings
- Puppy and game1666CodeChef
- Put Knight!1400Codeforcesgamesmath
- Qingshan Loves Strings 21300Codeforcesconstructive algorithmsgreedyimplementation
- Qpwoeirut And The City1400Codeforcesdpflowsgreedyimplementation
- Qualifying Contest1300Codeforcesconstructive algorithmssortings
- Quasi Binary1400Codeforcesconstructive algorithmsdpgreedyimplementation
- Queen1400Codeforcesdfs and similartrees
- Queries about less or equal elements1300Codeforcesbinary searchdata structuressortingstwo pointers
- Queries on a String1300Codeforcesimplementationstrings
- Queue1300Codeforcesgreedyimplementationsortings
- Queue Sort1300Codeforcesgreedyimplementationsortings
- Quotient and Remainder1300Codeforcesbinary searchgreedytwo pointers
- Race Against Time1400Codeforcesimplementation
- Racing1400Codeforcesconstructive algorithmsgreedy
- Racing1759CodeChef
- Rae Taylor and Trees (easy version)1400Codeforcesbinary searchdata structuresdpdsu
- Random Teams1300Codeforcescombinatoricsconstructive algorithmsgreedymath
- Range Assign, Number of Distinct Elements Minimize1648CodeChef
- Range Operation1300Codeforcesdpgreedymathtwo pointers
- RationalLee1400Codeforcesgreedymathsortingstwo pointers
- Reach Median1300Codeforcesgreedy
- Real obtuse1647CodeChef
- Recover the Sequence1694CodeChef
- Rectangles1300Codeforcescombinatoricsmath
- Rectangles Counting1770CodeChef
- Rectangular Queries1778CodeChef
- Recurrence Reachability1759CodeChef
- Recursive Queries1300Codeforcesbinary searchdata structuresdfs and similar
- Reduce to zero1627CodeChef
- Registration System1300Codeforcesdata structureshashingimplementation
- Regular Bracket Sequence1400Codeforcesgreedy
- Remove the Ends1300Codeforcesbrute forceconstructive algorithmsdpgreedy
- Remy paints the fence1793CodeChef
- Renako Amaori and XOR Game (hard version)1400Codeforcesbitmasksgamesgreedy
- Reorder the Array1300Codeforcescombinatoricsdata structuresmathsortings
- Replace To Make Regular Bracket Sequence1400Codeforcesdata structuresexpression parsingmath
- Replacement1300Codeforcesgreedyimplementationsortings
- Reservior1677CodeChef
- Resistance1761CodeChef