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- Markers on a Tree (Hard)2194CodeChef
- Masha and geometric depression1700Codeforcesbrute forceimplementationmath
- Math Division1800Codeforcesbitmasksdpmathprobabilities
- Math Show1800Codeforcesbrute forcegreedy
- Mathematical Problem1700Codeforcesbrute forceconstructive algorithmsgeometrymath
- Matrix Cascade1700Codeforcesbrute forceconstructive algorithmsdata structuresdp
- Matrix Walk1700Codeforcesimplementation
- Matrix game1800Codeforcescombinatoricsmath
- Max GEQ Sum1800Codeforcesbinary searchconstructive algorithmsdata structuresdivide and conquer
- Max Range Queries2057CodeChef
- Maxim and Progressions2098CodeChef
- Maximal Expression2127CodeChef
- Maximise Set Bits 2010CodeChef
- Maximising Vacations2147CodeChef
- Maximize the Intersections1800Codeforcescombinatoricsconstructive algorithmsgeometrygreedy
- Maximize the Largest Component (Easy Version)1700Codeforcesbrute forcedata structuresdfs and similardsu
- Maximize!1800Codeforcesbinary searchgreedyternary searchtwo pointers
- Maximizing LIS2079CodeChef
- Maximum AND1800Codeforcesbitmasksdfs and similardivide and conquergreedy
- Maximum And Or2028CodeChef
- Maximum And Queries (easy version)1700Codeforcesbinary searchbitmasksbrute forcegreedy
- Maximum Diameter Graph1800Codeforcesconstructive algorithmsgraphsimplementation
- Maximum Distance1800Codeforcesdsugraphsshortest pathssortings
- Maximum Distributed Tree1800Codeforcesdfs and similardpgreedyimplementation
- Maximum Factors Problem2006CodeChef
- Maximum Number2083CodeChef
- Maximum Plus2177CodeChef
- Maximum Points2061CodeChef
- Maximum Product Walk2005CodeChef
- Maximum Subsequence1800Codeforcesbitmasksdivide and conquermeet-in-the-middle
- Maximum White Subtree1800Codeforcesdfs and similardpgraphstrees
- Maximum Xor Secondary1800Codeforcesdata structuresimplementationtwo pointers
- Maximum modulo equality1700Codeforcesdata structuresdivide and conquermathnumber theory
- Maximum number, GCD condition2169CodeChef
- Maze Love2025CodeChef
- Me When Median Problem1700Codeforcesbinary searchgreedy
- Median Smoothing1700Codeforcesimplementation
- Median on Segments (Permutations Edition)1800Codeforcessortings
- Medical Parity1700Codeforcesdpstrings
- Medium Demon Problem (easy version)1700Codeforcesdfs and similargraph matchingsgraphsimplementation
- Medium Design1700Codeforcesbrute forcedata structuresdpgreedy
- Merge Sort1800Codeforcesconstructive algorithmsdivide and conquer
- Message1700Codeforcesbrute force
- Message Transmission Error (hard version)1700Codeforceshashingstring suffix structuresstringstwo pointers
- Messenger in MAC1800Codeforcesbinary searchbrute forceconstructive algorithmsdata structures
- Messy1700Codeforcesconstructive algorithms
- Meta-set1700Codeforcesbrute forcecombinatoricsdata structureshashing
- Mex-P Tree (Easy)2085CodeChef
- Mexy Array2190CodeChef
- Mikasa1800Codeforcesbinary searchbitmasksgreedyimplementation
- Mike and Chocolate Thieves1700Codeforcesbinary searchcombinatoricsmath
- Mike and gcd problem1700Codeforcesdpgreedynumber theory
- Milestones2078CodeChef
- Military Trainings1700Codeforces
- MinPath Minimize2186CodeChef
- Minimal Usage2018CodeChef
- Minimal string1700Codeforcesdata structuresgreedystrings
- Minimise the Size2059CodeChef
- Minimize Digit Sum2167CodeChef
- Minimize Fixed Points1700Codeforcesconstructive algorithmsnumber theory