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- Chef and Universe2196CodeChef
- Chef and Words2121CodeChef
- Chef and easy problem 22020CodeChef
- Chef and insomnia2197CodeChef
- ChefGame2058CodeChef
- Chefina and Prefix Suffix Sums2189CodeChef
- Chefina and Ranges2159CodeChef
- Chemical reactions2161CodeChef
- Cherry and Bits2179CodeChef
- Chimpanzini Bananini1700Codeforcesdata structuresimplementationmath
- Chipped Tree2011CodeChef
- Chips1800Codeforcesgreedy
- Chloe and pleasant prizes1800Codeforcesdfs and similardpgraphstrees
- Choosing Capital for Treeland1700Codeforcesdfs and similardpgraphstrees
- Chopping Carrots (Easy Version)1700Codeforcesbinary searchbrute forceconstructive algorithmsgreedy
- Christmas Trees1800Codeforcesgraphsgreedyshortest paths
- Churu and lost string2068CodeChef
- Ciel and Eggs2024CodeChef
- Ciel and Map2084CodeChef
- Ciel and Robot1700Codeforcesbinary searchimplementationmath
- Circle Game1700Codeforcesgamesgeometrymath
- Circle of Chaos2195CodeChef
- Circle of towers2065CodeChef
- Circus1800Codeforcesbrute forcegreedymathstrings
- Cleaning the Phone1800Codeforcesbinary searchdpsortingstwo pointers
- Clear Symmetry1700Codeforcesconstructive algorithmsdpmath
- Clear the Array2037CodeChef
- Climbing the Tree1700Codeforcesbinary searchmath
- Clique Problem1800Codeforcesdata structuresdpgreedyimplementation
- Close Tuples (hard version)1700Codeforcesbinary searchcombinatoricsimplementationmath
- Cloud of Hashtags1800Codeforcesbinary searchgreedyimplementationstrings
- Coal Scam2124CodeChef
- Cobb1700Codeforcesbitmasksbrute forcegreedymath
- Codeforces World Finals1700Codeforcesimplementation
- Coffee and Coursework (Easy version)1700Codeforcesbrute forcegreedy
- Coffee and Coursework (Hard Version)1700Codeforcesbinary searchgreedy
- Collatz Conjecture (Hard)2127CodeChef
- Collect the Chocolate Chips2176CodeChef
- Collecting Magical Berries2017CodeChef
- Color the Fence1700Codeforcesdata structuresdpgreedyimplementation
- Colored Balls1800Codeforcescombinatoricsdpmathsortings
- Colored Rectangles1800Codeforcesdpgreedysortings
- Colored Rooks1700Codeforcesconstructive algorithmsgraphs
- Colorful Grid1700Codeforcesconstructive algorithms
- Coloring Trees1700Codeforcesdp
- Comments1700Codeforcesdfs and similarexpression parsingimplementationstrings
- Competitive Fishing1800Codeforcesgreedy
- Compressed Bracket Sequence1800Codeforcesbrute forceimplementation
- Compression1800Codeforcesdpimplementationmathnumber theory
- Computer Game1800Codeforcesgreedyimplementation
- Congruent triangles2094CodeChef
- Connect the Dots1800Codeforcesbrute forcedpdsugraphs
- Connect the Points1800Codeforcesbrute forceconstructive algorithmsgeometry
- Connected Component on a Chessboard1800Codeforcesconstructive algorithmsimplementation
- Connecting Universities1800Codeforcesdfs and similardpgraphstrees
- Consecutive Adding2038CodeChef
- Consecutive Deletions2008CodeChef
- Consecutive Subsequence1700Codeforcesdp
- Constant Palindrome Sum1700Codeforcesbrute forcedata structuresgreedytwo pointers
- Constant Subsequence2008CodeChef