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- Bitwise Magic3200Codeforcesdpmath
- Bitwise Paradox3100Codeforcesbinary searchbitmasksdata structuresgreedy
- Black Cat Collapse3500Codeforces
- Black Widow2900Codeforcesdpgraphsimplementationmath
- Black and White2800Codeforcesconstructive algorithms
- Black and White Tree3008CodeChef
- Black, White and Grey Tree3000Codeforcesbinary searchconstructive algorithmsdfs and similardp
- Black-and-White Tree2921CodeChef
- Blackjack2903CodeChef
- Block Tower2995CodeChef
- Blocks and Sensors3500Codeforcesbrute force
- Blog Post Rating3000Codeforcesdata structuressortings
- Bob and stages3000Codeforcesdpgeometry
- Boboniu and Banknote Collection3500Codeforcesstrings
- Boboniu and Jianghu2800Codeforcesdpgreedysortingstrees
- Bombing (Hard Version)3300Codeforcescombinatoricsdp
- Book Sorting2900Codeforces
- Boolean Computer2800Codeforcesbitmasksbrute forcefftmath
- Boolean Function3000Codeforcesbitmasksdpexpression parsing
- Bored of Nim2915CodeChef
- Boring Card Game3200Codeforcesdata structuresgreedytrees
- Bosco and Particle3100Codeforcesdpmathnumber theorystrings
- Bounded Spanning Tree3221CodeChef
- Bracket Removal3029CodeChef
- Brahma and Shiva3150CodeChef
- Breadboard Capacity (easy version)3300Codeforcesdpflowsgreedy
- Breadboard Capacity (hard version)3500Codeforces
- Bricks2800Codeforcesflowsgraph matchingsgraphs
- Bridge Club2800Codeforcesflowsgraph matchingsgraphsgreedy
- Broken Dreams3084CodeChef
- Bubble Popping3200Codeforces
- Bubble Sort2900Codeforcesbrute forcecombinatoricsdp
- BubbleReactor2800Codeforcesdpgraphs
- BubbleSquare Tokens3500Codeforces
- BuberPool Taxi Optimization2900Codeforces*specialinteractive
- Budget Distribution3300Codeforces
- Bug Is Feature (Conditional Version)3500Codeforcesgames
- Bug Is Feature (Unconditional Version)3400Codeforcesgames
- Bugaboo3500Codeforcesbitmasksconstructive algorithmsdpnumber theory
- Buggy DFS3000Codeforcesconstructive algorithms
- Build From Suffixes2800Codeforces*specialcombinatoricsdata structures
- Build Sum3166CodeChef
- Build the Tree3064CodeChef
- Building Castle2900Codeforces
- Building Forest Trails2800Codeforcesdata structuresdsu
- Bully Sort3500Codeforcesdata structuresmath
- Burenka, an Array and Queries3300Codeforcesdata structuresmathnumber theory
- Bus Routes3400Codeforcesbinary searchconstructive algorithmsdfs and similargreedy
- Bus Station3604CodeChef
- Buy One, Get One Free3000Codeforcesdpgreedy
- Buying Seedlings3018CodeChef
- Buying Sets2900Codeforcesflowsgraph matchings
- Byteland Tours3626CodeChef
- Byteland coins3200Codeforcescombinatoricsdpmath
- Bánh Bò3300Codeforces
- CCDSAP Exam3112CodeChef
- Cacti Classification3200Codeforcesbinary searchconstructive algorithmsinteractivemath
- Cacti Symphony3500Codeforcescombinatoricsdfs and similardpgraphs
- Cactus Lady and her Cing3500Codeforces
- Cactus Meets Torus3500Codeforces