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- Tree Upshot2613CodeChef
- Tree and Divisors2782CodeChef
- Tree and Queries2400Codeforcesdata structuresdfs and similartrees
- Tree of Life (medium)2700Codeforcesconstructive algorithmshashingtrees
- Trees and XOR Queries Again2400Codeforcesdata structuresdfs and similardivide and conquergraphs
- Trial for Chief2600Codeforcesgraphsgreedyshortest paths
- Trial of Doom2601CodeChef
- Trial of the Conqueror2732CodeChef
- Triangles2600Codeforcesdpgeometry
- Triangles2600Codeforcescombinatoricsdp
- Tricky Interactor2600Codeforcesconstructive algorithmsimplementationinteractive
- Triple Attack2500Codeforcesdata structuresgreedy
- Triple Flips2600Codeforcesconstructive algorithms
- Trucks and Cities2400Codeforcesbinary searchdp
- Tuple Slimes2654CodeChef
- Turtle and Intersected Segments2600Codeforcesdata structuresdsugraphsgreedy
- Turtle and Inversions (Easy Version)2600Codeforcesbrute forcedivide and conquerdpgreedy
- Turtle and Inversions (Hard Version)2700Codeforcesbrute forcedata structuresdivide and conquerdp
- Turtle and Multiplication2400Codeforcesconstructive algorithmsdfs and similargraphsnumber theory
- Turtles2500Codeforcesdpmatrices
- Twin Clusters2600Codeforcesbitmasksbrute forceconstructive algorithmsmath
- Two Arithmetic Progressions2500Codeforcesmathnumber theory
- Two Arrays2500Codeforcesconstructive algorithmsdfs and similargraphsmath
- Two Arrays2700Codeforcesbitmasksbrute forcecombinatoricsgreedy
- Two Arrays2400Codeforcesbinary searchgamesgraph matchings
- Two Circles2500Codeforcesbrute forcedata structuresimplementation
- Two Editorials2500Codeforcesbrute forcedpgreedysortings
- Two Friends2600Codeforcesbinary searchgeometry
- Two Magicians2812CodeChef
- Two Melodies2600Codeforcesdpflows
- Two Merchants2808CodeChef
- Two Merged Sequences2400Codeforcesdpgreedy
- Two Paths2600Codeforcesconstructive algorithmsdsugraphsimplementation
- Two Permutations2700Codeforcesdata structureshashingstrings
- Two Permutations (Easy Version)2400Codeforcesbrute forceconstructive algorithmsgreedynumber theory
- Two Prefixes2600Codeforcesstrings
- Two Roads2860CodeChef
- Two Sets2700Codeforcesbitmasksmath
- Two Subarrays2600Codeforcesdata structuresdpimplementationmatrices
- Two Tanks2400Codeforcesbinary searchdpimplementationmath
- Two permutations2400Codeforcesdata structures
- Two-Paths2700Codeforcesdata structuresdptrees
- Typewriter2500Codeforcesbrute forcemath
- Typical Party in Dorm2400Codeforcesbitmaskscombinatoricsdpstrings
- U22400Codeforcesgeometry
- Unambiguous Arithmetic Expression2600Codeforcesdpexpression parsing
- Unbalanced Reversals2825CodeChef
- Uncle Bogdan and Projections2700Codeforcesdata structuresgeometrysortings
- Underfail2400Codeforcesflows
- Unequal Split2769CodeChef
- Uniformly Branched Trees2700Codeforcescombinatoricsdptrees
- Unique Array2400Codeforcesbinary searchdata structuresdivide and conquerdp
- Unique Mode2804CodeChef
- Unordered Swaps2700Codeforcesconstructive algorithmsdfs and similargraphsgreedy
- Unreachability Cost2753CodeChef
- Up and Down the Tree2500Codeforcesdfs and similardptrees
- Updating Edges on Trees2806CodeChef
- Upgrading Tree2600Codeforcesconstructive algorithmsdfs and similargraphsmath
- Useful Edges2400Codeforcesgraphsshortest paths
- VS and his marking scheme2882CodeChef