poj AC code, has a certain reference value, you can download to look at,

pkuAC
.....\Anagram_1256.cpp
.....\APlugForUNIX_1087.cpp
.....\Area_1654.cpp
.....\ARoundPegInAGroundHole_1584.cpp
.....\Artillery_1185.cpp
.....\Atlantis_1151.cpp
.....\Babelfish_2503.cpp
.....\BalancingAct_1655.cpp
.....\BigNumber_1423.cpp
.....\BinaryCodes_1147.cpp
.....\Biorythms_1006.cpp
.....\BlueJeans_3080.cpp
.....\BracketSequnce_1141.cpp
.....\Bracket_2955.cpp
.....\BridgingSignal_1631.cpp
.....\BST_2309.cpp
.....\BugIntegratedInc_1038.cpp
.....\Caterpillar_3310.cpp
.....\CelebrityJeopardy_3062.c
.....\CellularAutomation_3150.cpp
.....\ChannelAllocation_1129.cpp
.....\CircleAndPoints_1981.cpp
.....\ColoredStones_2978.cpp
.....\Computers_3486.cpp
.....\ConstructingRoads_2421.cpp
.....\ContestantsDivision_3140.cpp
.....\CopyingBooks_1505.cpp
.....\CountingProblem_2282.cpp
.....\CountSquares_3432.cpp
.....\Courses_1469.cpp
.....\CrossedLadders_2507.cpp
.....\CuttingCake_2951.cpp
.....\DifferentDigits_2283.cpp
.....\DNA_Sorting_1007.cpp
.....\DrainageDitches_1273.cpp
.....\EditStepLadders_2564.cpp
.....\Eight_1077.cpp
.....\ExpensivePresident_1062.cpp
.....\Exponentian_1001.cpp
.....\Fibonacci_3070.cpp
.....\FinancialManagement_1004.c
.....\FindingTheRectangle_3681.cpp
.....\FlipGame_1753.cpp
.....\Fractal_2083.cpp
.....\Frogger_2253.cpp
.....\GameOfLines_3668.cpp
.....\Gangster_1036.cpp
.....\GoneFishing_1042.cpp
.....\GraphColoring_1419.cpp
.....\HalloweenTreats_3370.cpp
.....\HolidayHotel_2726.cpp
.....\InDanger_1781.cpp
.....\JennysFirstExam_3110.cpp
.....\JuryCompromise_1015.cpp
.....\King_1364.cpp
.....\KnightMoves_1915.cpp
.....\LargestRectangleInAHistogram_2559.cpp
.....\LongestOrderedSubsequence_2533.cpp
.....\LongLongMessage_2774.cpp
.....\MachineSchedule_1325.cpp
.....\NearestCommonAncestors_1330.cpp
.....\NumberSteps_1663.cpp
.....\Orders_1731.cpp
.....\Orders_1731_v2.cpp
.....\OuroborosSnake_1392.cpp
.....\Palindrom_1159.cpp
.....\ParityGame_1733.cpp
.....\PerfectCubes_1543.cpp
.....\Permutation_1833.cpp
.....\PopularCows_2186.cpp
.....\PostOffice_1160.cpp
.....\PowerNetwork_1459.cpp
.....\print.sh
.....\ProfessorBen_3604.cpp
.....\PutApples_1664.cpp
.....\Q_3078.cpp
.....\RaisingModuloNumbers_1995.cpp
.....\RebuildingRoads_1947.cpp
.....\Regetni_1809.cpp
.....\Relatives_2407.cpp
.....\RepeatlessNumbers_2956.cpp
.....\Requirements_2926.cpp
.....\Roadblocks_3255.cpp
.....\Rounders_3077.cpp
.....\Ski_1088.cpp
.....\SortingItAllOut_1094.cpp
.....\Spam_3073.cpp
.....\SPF_1523.cpp
.....\Squares_2002.cpp
.....\Stars_2352.cpp
.....\Sticks_1011.cpp
.....\Sudoku_2676.cpp
.....\Tallest_Cow_3263.cpp
.....\TangledInCables_2075.cpp
.....\TestingTheCATCHER_1887.cpp
.....\TheDogTask_1034.cpp
.....\TheDrunkJailer_1218.c
.....\TheHourseRacing_2287.cpp
.....\TheRotationGame_2286.cpp

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