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- Park tour2922CodeChef
- Parking Lot2800Codeforcesdata structuresdivide and conquer
- Parmigiana With Seafood3000Codeforcesbinary searchdpgreedytrees
- Partial Virtual Trees3000Codeforcescombinatoricsdfs and similardpmath
- Partition Ways2988CodeChef
- Partition and Maximize3000CodeChef
- Passports3400Codeforcesdpimplementation
- Password2800Codeforcesbitmasksdpshortest paths
- Password Cracking Challenge3489CodeChef
- Pastoral Oddities3000Codeforcesdata structuresdivide and conquerdsumath
- Path Triples On Tree2954CodeChef
- Paths3109CodeChef
- Pawn Chess3062CodeChef
- Payton numbers3242CodeChef
- Peak Productivity Forces3500Codeforcesconstructive algorithms
- Peaks2913CodeChef
- Pebbles and Beads2900Codeforcesdata structuresgeometry
- Penchick and Even Medians2800Codeforcesbinary searchconstructive algorithmsinteractiveprobabilities
- Penguin Steps3000Codeforcesbinary searchdfs and similarflowsgraphs
- Pepe Racing3200Codeforcesconstructive algorithmsimplementationinteractivesortings
- Perfect Encoding3100Codeforcesfftmath
- Perfect Matching2800Codeforcesdata structuresdivide and conquerinteractivetrees
- Permanent3100Codeforcesdpgraph matchingsmathmeet-in-the-middle
- Permutation Concatenation3300Codeforcesstring suffix structures
- Permutation Counting (Hard)3312CodeChef
- Permutation Cycle Queries3167CodeChef
- Permutation Deletion3036CodeChef
- Permutation Factory3500Codeforcesflowsgeometrygraph matchingsgraphs
- Permutation Oddness2900Codeforcescombinatoricsdpmath
- Permutation Segments3045CodeChef
- Permutation Shop3160CodeChef
- Permutation Split2996CodeChef
- Permutation Weight (Easy Version)2800Codeforcesconstructive algorithmsdfs and similardsu
- Permutation Weight (Hard Version)3500Codeforcesconstructive algorithmsgreedy
- Permutation Xor2985CodeChef
- Permutation and GCD Set2901CodeChef
- Permutation for Burenka3300Codeforcesdata structuresgraph matchingsgreedymath
- PermutationForces3000Codeforcesdata structuresgreedy
- Permutations2800Codeforcesmathmatrices
- Permutations2976CodeChef
- Permutations LCS3621CodeChef
- Perpetual Motion Machine3100Codeforcesconstructive algorithmsdpgraphsimplementation
- Perpetual Subtraction3100Codeforcesfftmathmatrices
- Perry learns Binary3222CodeChef
- Persistent oak2944CodeChef
- Petya and Rectangle2900Codeforces
- Phineas and Marks3660CodeChef
- Phoenix and Bits3500Codeforcesbitmasksbrute forcedata structuressortings
- Phoenix and Diamonds3400Codeforcesbinary searchdata structuressortings
- Phys Ed Online2900Codeforcesdata structuresdpgreedy
- Physical Examination3200Codeforces*specialbinary searchdata structures
- Picnic with Chef3160CodeChef
- Pie Tasting3322CodeChef
- Piet's Palette3200Codeforcesmatrices
- Pilgrims2800Codeforcesdfs and similardptrees
- Pills2900Codeforcesbrute forceflows
- Pinball3500Codeforcesgraphsshortest paths
- Ping-Pong3000Codeforcesdata structures
- Pink Floyd3200Codeforcesgraphsinteractive
- Pisces3400Codeforcesdata structuresflowstrees