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- Anti-diagonal unitary1500Codeforces*special
- Antimatching1919CodeChef
- Anton and Fairy Tale1600Codeforcesbinary searchmath
- Anton and Lines1600Codeforcesgeometrysortings
- Anton and Making Potions1600Codeforcesbinary searchdpgreedytwo pointers
- Anu Has a Function1500Codeforcesbrute forcegreedymath
- Anya and Ghosts1600Codeforcesconstructive algorithmsgreedy
- Anya and Smartphone1600Codeforcesconstructive algorithmsdata structuresimplementation
- Appy and Balloons 1947CodeChef
- AquaMoon and Strange Sort1500Codeforcessortings
- Arcology On Permafrost1600Codeforcesbinary searchbrute forceconstructive algorithmsgreedy
- Are These Equal1973CodeChef
- Arpa's loud Owf and Mehrdad's evil plan1600Codeforcesdfs and similarmath
- Arpa's weak amphitheater and Mehrdad's valuable Hoses1600Codeforcesdfs and similardpdsu
- Arpa’s obvious problem and Mehrdad’s terrible solution1500Codeforcesbrute forcemathnumber theory
- Array1500Codeforcesbitmasksimplementationtwo pointers
- Array Filling1887CodeChef
- Array Rotation Returns1818CodeChef
- Array Sorting1600Codeforces*specialimplementation
- Array Walk1600Codeforcesbrute forcedpgreedy
- Atleast and Atmost1870CodeChef
- Aujasvit and the Circle Game1927CodeChef
- Average Sorting1996CodeChef
- Avoid Primes1883CodeChef
- Ayoub and Lost Array1500Codeforcescombinatoricsdpmath
- Azamon Web Services1600Codeforcesgreedy
- Backspace1500Codeforcesdpgreedystringstwo pointers
- Bad Shuffle1861CodeChef
- Balance (Easy version)1500Codeforcesbrute forcedata structuresimplementationnumber theory
- Balance the Bits1600Codeforcesconstructive algorithmsgreedy
- Balanced Bitstring1500Codeforcesimplementationstrings
- Balanced Stone Heaps1600Codeforcesbinary searchgreedy
- Balanced Substring1500Codeforcesdpimplementation
- Balanced Ternary String1500Codeforcesgreedystrings
- Balanced brackets1600Codeforces*special
- Balancer1600Codeforcesgreedyimplementation
- Banh-mi1600Codeforcesgreedyimplementationmath
- Bank robbery1936CodeChef
- Bargaining Table1500Codeforcesbrute forcedp
- Basic Diplomacy1600Codeforcesbrute forceconstructive algorithmsgreedyimplementation
- Basketball Team1600Codeforcescombinatoricsdpmathprobabilities
- Batch Sort1500Codeforcesbrute forcegreedyimplementationmath
- Bathwater1831CodeChef
- Battleship V1930CodeChef
- Bear and Blocks1600Codeforcesbinary searchdata structuresdpmath
- Bear and Clique Distances1972CodeChef
- Bear and Colors1500Codeforcesimplementation
- Bear and Different Names1500Codeforcesconstructive algorithmsgreedy
- Bear and Forgotten Tree 31600Codeforcesconstructive algorithmsgraphstrees
- Bear and Friendship Condition1500Codeforcesdfs and similardsugraphs
- Bear and Three Musketeers1500Codeforcesbrute forcedfs and similargraphshashing
- Bear and Two Paths1600Codeforcesconstructive algorithmsgraphs
- Beautiful Array1800CodeChef
- Beautiful Palindromes1600Codeforcesconstructive algorithmsgreedyschedules
- Beautiful Regional Contest1500Codeforcesgreedyimplementation
- Beautiful Sequence1500Codeforcescombinatoricsdpgreedytwo pointers
- Beautiful Sets of Points1500Codeforcesconstructive algorithmsimplementation
- Beauty Pageant1600Codeforcesbrute forceconstructive algorithmsgreedy
- Beauty in Everything1969CodeChef
- Beaver's Calculator 1.01600Codeforcesgreedy