Home
Problem
Status
Contest
Workbook
User
Group
Forum
Register
Login
{"workbook":{"problemsBrief":"{\"CodeChef-CAKE2AM\":[\"Chef and the Cake II\",15,\"satej_adm\"],\"CodeChef-REACHRIG\":[\"Reaching the Rig\",18,\"admin\"],\"CodeChef-VOGOZO\":[\"Vogon Zoo\",435,\"yogesh01\"],\"CodeChef-TSEQ\":[\"Tree Sequences\",48,\"daniel_1999\"],\"CodeChef-GOODSEGS\":[\"Good Subsequences\",49,\"gainullinildar\"],\"CodeChef-CYDB\":[\"Can you do it better\",36,\"tomaz_adm\"],\"CodeChef-DARTSEGM\":[\"Darts\",51,\"gainullinildar\"],\"CodeChef-SEAINVS\":[\"Sereja and Inversions\",63,\"sereja_adm\"],\"CodeChef-CHEFKC\":[\"Chef and Cut\",45,\"mgch\"],\"CodeChef-BNGAME\":[\"Brand New Game\",114,\"sergey_adm\"],\"CodeChef-BINOMSUM\":[\"Day Schedule\",24,\"chemthan\"],\"CodeChef-CHEFFIB\":[\"Chef, Leonardo And Queries\",7,\"kefaa\"],\"CodeChef-ARRAYSUM\":[\"Arrays Sum\",116,\"sergey_adm\"],\"CodeChef-BIBOARD\":[\"Binary Board\",38,\"ratingoverflow\"],\"CodeChef-MAXDTREE\":[\"Max-digit Tree\",44,\"altruist_\"],\"CodeChef-PANIC\":[\"Panic! at the Disco\",41,\"sjshohag\"],\"CodeChef-GENETICS\":[\"Genetics\",79,\"ivan_adm\"],\"CodeChef-CIRCLEAT\":[\"Circle Eating\",37,\"ildar_adm\"],\"CodeChef-CHEFLST\":[\"Chef and Lost Story\",47,\"bciobanu\"],\"CodeChef-LALALANT\":[\"The Fools Who Dream\",1,\"kevinsogo\"],\"CodeChef-XORTREEH\":[\"Chef and Horcrux\",44,\"adkroxx\"],\"CodeChef-MUFFINS2\":[\"Frosting Cupcakes\",18,\"david_adm\"],\"CodeChef-INMAT\":[\"Interactive Matrix\",150,\"allllekssssa\"],\"CodeChef-JERRYTOM\":[\"Tom and Jerry\",123,\"rajat1603\"],\"CodeChef-SUBGRAPH\":[\"Counting Subgraphs\",30,\"kostya_by\"],\"CodeChef-TRDST\":[\"Yet Another Tree Problem\",249,\"daniel_1999\"],\"CodeChef-CHEFARMY\":[\"Chefland Army\",256,\"alei\"],\"CodeChef-TSUBSTR\":[\"Substrings on a Tree\",135,\"sergey_adm\"],\"CodeChef-LIGHTARE\":[\"Find Lighted Area\",15,\"admin2\"],\"CodeChef-PSLISCNT\":[\"Prefix Suffix LIS Counting\",11,\"um_nik\"],\"CodeChef-TKCONVEX\":[\"Two k-Convex Polygons\",374,\"jingbo_adm\"],\"CodeChef-SCIENCEF\":[\"Science Fair\",31,\"usaxena95\"],\"CodeChef-H3\":[\"Congruent triangles\",53,\"admin\"],\"CodeChef-GEOCHEAT\":[\"Bear and Shuffled Points\",67,\"errichto\"],\"CodeChef-MDSWIN\":[\"Winning Ways\",67,\"upobir\"],\"CodeChef-RUBBER\":[\"Rubber Band\",59,\"jcpaik\"],\"CodeChef-TBGRAPH\":[\"Graph on a Table\",48,\"isaf27\"],\"CodeChef-MINDEG\":[\"Minimum of Degrees\",46,\"errichto\"],\"CodeChef-ADAFARM\":[\"Ada Farm\",20,\"alei\"],\"CodeChef-XRMTRX\":[\"Xor Matrix\",180,\"alex_2oo8\"],\"CodeChef-CNTDIGIT\":[\"Count Digits\",31,\"witaliy_adm\"],\"CodeChef-KHULJA\":[\"Alohomora\",38,\"jtnydv25\"],\"CodeChef-DDART\":[\"D-Dart\",27,\"kmaaszraa\"],\"CodeChef-POLY\":[\"Polynomials\",217,\"chemthan\"],\"CodeChef-CSTREE\":[\"Complement Spanning Trees\",105,\"lg5293\"],\"CodeChef-MSTONES\":[\"Milestones\",159,\"tomaz_adm\"],\"CodeChef-COT5\":[\"Count on a Treap\",198,\"xiaodao\"],\"CodeChef-NGONS\":[\"Flipping Polygons\",32,\"sidhant007\"],\"CodeChef-DIGITS\":[\"Product of Digits\",81,\"david_adm\"],\"CodeChef-CHANGE\":[\"Making Change\",29,\"david_adm\"],\"CodeChef-GLBEGA\":[\"Glass Bead Game\",101,\"yogesh01\"],\"CodeChef-MXDIST\":[\"Maximum Distance\",58,\"bciobanu\"],\"CodeChef-PSUM\":[\"Power Sum\",100,\"rumblefool\"],\"CodeChef-UPDTREE\":[\"Updating Edges on Trees\",103,\"darkshadows\"],\"CodeChef-MGCHGYM\":[\"Misha and Gym\",88,\"mgch\"],\"CodeChef-OWCAFILE\":[\"OWCA Files\",22,\"kmaaszraa\"],\"CodeChef-GTHRONES\":[\"A Game of Thrones\",66,\"nikhil_adm\"],\"CodeChef-SQRGOOD\":[\"Simplify the Square Root\",79,\"liouzhou_101\"],\"CodeChef-FARASA\":[\"Furik and Rubik and Sub Array\",335,\"sereja_adm\"],\"CodeChef-J4\":[\"Effective Sets\",51,\"u_admin_codechef_pw\"],\"CodeChef-J5\":[\"Magic Strings\",54,\"u_admin_codechef_pw\"],\"CodeChef-TUZTRN\":[\"Puppy and Triangles\",16,\"pavel1996\"],\"CodeChef-BIKE\":[\"Chef and Bike\",58,\"wwwwodddd\"],\"CodeChef-J6\":[\"Help the judge\",35,\"u_admin_codechef_pw\"],\"CodeChef-NOSS\":[\"Maximize the NOSS\",36,\"arpa\"],\"CodeChef-BESTTRI\":[\"Best Triangle\",30,\"kingofnumbers\"],\"CodeChef-PFRUIT\":[\"Picking Fruit for Chefs\",51,\"ohweonfire\"],\"CodeChef-SPMATRIX\":[\"Count Special Matrices\",127,\"anton_adm\"],\"CodeChef-CHEFKNN\":[\"Chef and Interval Painting\",89,\"bciobanu\"],\"CodeChef-PRECPAIR\":[\"Precise Pairing\",54,\"zac_adm\"],\"CodeChef-STREETTA\":[\"The Street \",262,\"tuan_adm\"],\"CodeChef-SHORT2\":[\"Short II\",37,\"gennady_adm\"],\"CodeChef-SEALCM\":[\"Sereja and LCM\",530,\"sereja_adm\"],\"CodeChef-ANUSAR\":[\"Substrings and Repetitions\",236,\"anudeep2011\"],\"CodeChef-PRDIVSUM\":[\"Sum Divides Product\",42,\"anton_adm\"],\"CodeChef-WTHINGS\":[\"Where the Wild Things Are\",76,\"kostya_by\"],\"CodeChef-RIVER\":[\"Chef at the River\",30,\"bciobanu\"],\"CodeChef-E3\":[\"Johny the farmer\",70,\"u_admin_codechef_pw\"],\"CodeChef-ZUBSECRT\":[\"I - Secrets\",24,\"zubaerkh\"],\"CodeChef-CUTTREE\":[\"Chef Cuts Tree\",80,\"jtnydv25\"],\"CodeChef-E5\":[\"Buggy algorithm\",80,\"u_admin_codechef_pw\"],\"CodeChef-FLYDIST\":[\"Flight Distance\",57,\"tomaz_adm\"],\"CodeChef-TRICONT\":[\"Chef and Guard Towers\",33,\"kevinsogo\"],\"CodeChef-ZUBSPOIL\":[\"H - Unpredictable Array\",3,\"zubaerkh\"],\"CodeChef-APAIRS\":[\"Scoring Pairs\",110,\"foyaz05\"],\"CodeChef-CIELBALL\":[\"Ciel and Ball Guessing Game\",28,\"hiroto_adm\"],\"CodeChef-FSFSFS\":[\"Factorial to Square\",98,\"jingbo_adm\"],\"CodeChef-TICKETS\":[\"Selling Tickets\",68,\"david_adm\"],\"CodeChef-CIELKARA\":[\"Ciel and Karaoke\",16,\"hiroto_adm\"],\"CodeChef-STRQUERY\":[\"String Query\",78,\"wjmzbmr\"],\"CodeChef-D7\":[\"Alien Clock\",20,\"admin\"],\"CodeChef-KILLKTH\":[\"Killjee and k-th letter \",186,\"killjee\"],\"CodeChef-MEETUP\":[\"Meeting location\",33,\"lg5293\"],\"CodeChef-LUCASTH\":[\"Lucas Theorem\",132,\"yzl427\"],\"CodeChef-REACAR\":[\"Rearranging Cartons \",252,\"yogesh01\"],\"CodeChef-D4\":[\"Primes in the GCD table\",109,\"u_admin_codechef_pw\"],\"CodeChef-QPOLYSUM\":[\"Quasi-Polynomial Sum\",18,\"anton_adm\"],\"CodeChef-BUYLAND\":[\"Buying Land\",53,\"tomaz_adm\"],\"CodeChef-KOL16G\":[\"Optimal use of Nuclear Power plant \",32,\"kol_adm\"],\"CodeChef-KOL16I\":[\"Roads\",29,\"kevinsogo\"],\"CodeChef-KOL16C\":[\"Zeroes VII\",58,\"kol_adm\"],\"CodeChef-KOL16D\":[\"Men and Horses\",41,\"kol_adm\"],\"CodeChef-KILLER\":[\"Painting Tree\",57,\"tanuj_khattar\"],\"CodeChef-CLOWAY\":[\"Future of draughts\",80,\"kaizer\"],\"CodeChef-PARSIN\":[\"Sine Partition Function\",94,\"hiroto_adm\"],\"CodeChef-CARDSHUF\":[\"Card Shuffle\",427,\"tomaz_adm\"],\"CodeChef-SHORTCIR\":[\"Shortest Circuit Evaluation\",45,\"ivan_adm\"],\"CodeChef-DAGCH\":[\"Graph Challenge\",88,\"shiplu_adm\"],\"CodeChef-GRDSTD\":[\"Greedy Students\",38,\"upobir\"],\"CodeChef-CHEFC\":[\"Chef and medium problem \",98,\"furko_adm\"],\"CodeChef-FNCS\":[\"Chef and Churu\",741,\"devuy11\"],\"CodeChef-G5\":[\"Chemical reactions\",28,\"admin\"],\"CodeChef-SEQTOWER\":[\"Adding Up Sequences of Towers\",20,\"devuy11\"],\"CodeChef-QPOINT\":[\"Queries With Points\",58,\"tuan_adm\"],\"CodeChef-CAPTCITI\":[\"Snakes capturing the Mongoose Cities\",150,\"admin3\"],\"CodeChef-G4\":[\"Alien language\",30,\"admin\"],\"CodeChef-FN\":[\"Fibonacci Number\",166,\"aekd_adm\"],\"CodeChef-HULL\":[\"Magic Hull\",49,\"jingbo_adm\"],\"CodeChef-DEVLOCK\":[\"Devu and Locks\",116,\"admin2\"],\"CodeChef-KOL15D\":[\"Seats\",51,\"balajiganapath\"],\"CodeChef-KOL15E\":[\"Weird Paths in a tree\",22,\"devuy11\"],\"CodeChef-ANUAAA\":[\"Anup at Amrithapuri\",80,\"anudeep2011\"],\"CodeChef-RRTREE2\":[\"Tree Again\",75,\"roman_adm\"],\"CodeChef-CUCUMBER\":[\"Cucumber Boy and Cucumber Girl\",46,\"hiroto_adm\"],\"CodeChef-F4\":[\"Se7en\",55,\"u_admin_codechef_pw\"],\"CodeChef-OVERPNT\":[\"Bear and Oveflow Points\",143,\"errichto\"],\"CodeChef-F6\":[\"Divide and conquer\",63,\"u_admin_codechef_pw\"],\"CodeChef-PPTREE\":[\"Polo the Penguin and the Tree\",256,\"witaliy_adm\"],\"CodeChef-PTOSS\":[\"Pizza Tossing\",51,\"nikhil_adm\"],\"CodeChef-YAEXP\":[\"Yet another expected value problem\",28,\"jtnydv25\"],\"CodeChef-CHEFPC\":[\"Polygon \\u0026 Circles\",40,\"furko_adm\"],\"CodeChef-BTMNTREE\":[\"Batman and Tree\",35,\"barenuz\"],\"CodeChef-SEABOX\":[\"Sereja and BOX\",84,\"sereja_adm\"],\"CodeChef-POLICE\":[\"Police and Thieves\",31,\"erfaniaa\"],\"CodeChef-NPIN\":[\"Needles and Pins\",89,\"vinay_adm\"],\"CodeChef-PERMUTE\":[\"Just Some Permutations 3\",498,\"imran_adm\"],\"CodeChef-PUSHFLOW\":[\"Push the Flow!\",91,\"kostya_by\"],\"CodeChef-A7\":[\"A Christmas Pizza Puzzle\",56,\"u_admin_codechef_pw\"],\"CodeChef-A8\":[\"The Bytelandian Union\",27,\"u_admin_codechef_pw\"],\"CodeChef-TREEQ1\":[\"Tree Query\",19,\"chemthan\"],\"CodeChef-ALICE\":[\"Alice\",43,\"alei\"],\"CodeChef-A5\":[\"Packing the Boxes\",61,\"u_admin_codechef_pw\"],\"CodeChef-CMPVIRS\":[\"Computer Virus\",43,\"kr_abhinav\"],\"CodeChef-ABSDIFFS\":[\"Absolute Difference Sum\",61,\"admin3\"],\"CodeChef-REVERSED\":[\"The Reversed World\",32,\"Shankar_IT150\"],\"CodeChef-EVENPOLY\":[\"Even Coefficients\",34,\"zac_adm\"],\"CodeChef-ROOTMST\":[\"Rooted Minimum Spanning Tree\",105,\"ildar_adm\"],\"CodeChef-MATRIXUM\":[\"Matrix Sum\",48,\"alex_2oo8\"],\"CodeChef-FUNCTION\":[\"Backup Functions\",72,\"zac_adm\"],\"CodeChef-ANUSFR\":[\"Substring and five rules\",31,\"anudeep2011\"],\"CodeChef-MULDIG\":[\"Multiplication Program\",61,\"errichto\"],\"CodeChef-PARRTY\":[\"Party\",145,\"watcher\"],\"CodeChef-MINWDSUM\":[\"Minimal Weighted Digit Sum\",28,\"anton_adm\"],\"CodeChef-STRSUM\":[\"Pairwise String Sums\",22,\"lg5293\"],\"CodeChef-SFUNC\":[\"SuperFunction\",46,\"kostya_by\"],\"CodeChef-CONPOIN\":[\"Connect Points\",31,\"pavel1996\"],\"CodeChef-CTREE\":[\"Chef and Chefcoin\",36,\"mgch\"],\"CodeChef-DISTRING\":[\"Distinct Rows in Submatrices\",84,\"jtnydv25\"],\"CodeChef-CLONES\":[\"Attack of the Clones\",72,\"ivan_adm\"],\"CodeChef-TULIPS\":[\"Tiptoe through the tulips\",93,\"meteora\"],\"CodeChef-JIIT\":[\"Queries on Matrix\",64,\"iamabjain\"],\"CodeChef-DIGFORST\":[\"Digits Forest\",174,\"anhdq_adm\"],\"CodeChef-TSUM2\":[\"Sum on Tree\",56,\"ratingoverflow\"],\"CodeChef-FINDSEQ\":[\"Find a Subsequence\",73,\"imran_adm\"],\"CodeChef-COOLNUM\":[\"Cool Numbers\",42,\"istva_adm\"],\"CodeChef-ADJLEAF2\":[\"Adjacent Leaves \",25,\"kingofnumbers\"],\"CodeChef-TRCNTCT\":[\"Tree Connectivity\",59,\"melnik\"],\"CodeChef-XDCOMP\":[\"Xor Decomposition\",342,\"stevens\"],\"CodeChef-DMCS\":[\"Dai Ma Chu Shi\",45,\"wwwwodddd\"],\"CodeChef-C1\":[\"Swapping mismatches\",53,\"admin\"],\"CodeChef-CHEFEQUA\":[\"Chef and Equations\",49,\"wxh010910\"],\"CodeChef-QSTRING\":[\"Stringology is Magic\",63,\"xiaodao\"],\"CodeChef-CUREK\":[\"Curing Kingdom\",32,\"lg5293\"],\"CodeChef-EVILBOOK\":[\"Evil Book\",114,\"hiroto_adm\"],\"CodeChef-COUNTARI\":[\"Arithmetic Progressions\",717,\"imran_adm\"],\"CodeChef-SINSUMQ\":[\"Sines Sum Queries\",22,\"anton_adm\"],\"CodeChef-LECOINS\":[\"Little Elephant and Colored Coins\",108,\"witaliy_adm\"],\"CodeChef-BB\":[\"Billboards\",109,\"gennady_adm\"],\"CodeChef-MINESREV\":[\"Minesweeper Reversed\",60,\"tomaz_adm\"],\"CodeChef-JADUGAR\":[\"Chef and Same Old Recurrence\",248,\"usaxena95\"],\"CodeChef-DODGERS\":[\"Dodgers\",71,\"kmaaszraa\"],\"CodeChef-EGGFREE\":[\"Egg-free DAG\",65,\"gainullinildar\"],\"CodeChef-SONIQUE\":[\"Sonya and Queries\",25,\"smelskiy\"],\"CodeChef-SEAARC\":[\"Sereja and Arcs\",159,\"sereja_adm\"],\"CodeChef-TREEBAL\":[\"Tree Balancing\",66,\"kingofnumbers\"],\"CodeChef-SPSHORT\":[\"Special Shortest Walk\",132,\"devuy11\"],\"CodeChef-COOK82E\":[\"Binary Tree\",52,\"deadwing97\"],\"CodeChef-MINPOLY\":[\"Devu, his sister and Rangoli\",30,\"admin2\"],\"CodeChef-SEAORD\":[\"Sereja and Order\",116,\"sereja_adm\"],\"CodeChef-LCM\":[\"Adding Least Common Multiples\",95,\"dor_adm\"],\"CodeChef-PUPPYGCD\":[\"Puppy and GCD\",143,\"pavel1996\"],\"CodeChef-CHEFONM\":[\"Chef and Sort\",59,\"mgch\"],\"CodeChef-WRDSUM\":[\"Weird Sum\",45,\"alex_2oo8\"],\"CodeChef-MAGIC\":[\"Two Magicians\",53,\"gennady_adm\"],\"CodeChef-FIBTREE\":[\"Fibonacci Numbers on Tree\",118,\"dzy493941464\"],\"CodeChef-DISTNUM2\":[\"Easy Queries\",149,\"mgch\"],\"CodeChef-HYPER\":[\"Hypertrees\",23,\"gennady_adm\"],\"CodeChef-EFLIP\":[\"Chef and Edge Flipping\",17,\"mohammed200218\"],\"CodeChef-PSTONES\":[\"Precious Stones \",50,\"arthurfn\"],\"CodeChef-REARRAN\":[\"Rearrangement\",15,\"gennady_adm\"],\"CodeChef-ROC\":[\"Room Corner\",49,\"vinay_adm\"],\"CodeChef-ADJLEAF\":[\"Adjacent leaves\",15,\"kingofnumbers\"],\"CodeChef-MARTARTS\":[\"Martial Arts\",36,\"tomaz_adm\"],\"CodeChef-DRAGONST\":[\"Dragonstone\",66,\"kostya_by\"],\"CodeChef-TUPLES\":[\"Coprime 6-tuples\",52,\"kevinsogo\"],\"CodeChef-QRECT\":[\"Rectangle Query\",178,\"xiaodao\"],\"CodeChef-CHEFPOL\":[\"Chef and Polyhedron\",35,\"mgch\"],\"CodeChef-TAPAIR\":[\"Counting The Important Pairs\",231,\"tuan_adm\"],\"CodeChef-GERALD08\":[\"Chef and Tree Game\",70,\"gerald\"],\"CodeChef-GERALD07\":[\"Chef and Graph Queries\",772,\"gerald\"],\"CodeChef-XETF\":[\"Euler Totient Function Extended\",82,\"sergey_adm\"],\"CodeChef-EXPCOMM\":[\"Exponentiation Commutativity\",25,\"anton_adm\"],\"CodeChef-MGCHGEOM\":[\"Misha and Geometry\",26,\"mgch\"],\"CodeChef-HAMEL\":[\"Hamel Paths\",19,\"alei\"],\"CodeChef-LCH15JGH\":[\"Many bananas\",80,\"pavel1996\"],\"CodeChef-TWOCOMP\":[\"Two Companies\",299,\"sergey_adm\"],\"CodeChef-SONATR\":[\"Sonya and Tree\",29,\"smelskiy\"],\"CodeChef-PALINDEQ\":[\"Palindromic Equivalence\",42,\"ildar_adm\"],\"CodeChef-BIPPAIR\":[\"Precise Bipartite Pairing\",35,\"zac_adm\"],\"CodeChef-ACMKANPA\":[\"Problem With Strings\",18,\"admin\"],\"CodeChef-ACMKANPC\":[\"Traffic Jam\",30,\"admin\"],\"CodeChef-CIELHACK\":[\"Ciel and password cracking\",19,\"hiroto_adm\"],\"CodeChef-MISINT2\":[\"Misinterpretation 2\",54,\"anton_adm\"],\"CodeChef-RANKA\":[\"Ranka\",378,\"chen_adm\"],\"CodeChef-ACMKANPE\":[\"Algebra Express\",20,\"admin\"],\"CodeChef-WEASELSC\":[\"Weasel finds Staircase\",75,\"bciobanu\"],\"CodeChef-SEAPERMS\":[\"Sereja and Permutations\",79,\"sereja_adm\"],\"CodeChef-VILLNET\":[\"Village Road Network\",55,\"john_smith_3\"],\"CodeChef-ADADET\":[\"A Study in Bake Street\",77,\"alei\"],\"CodeChef-PPARTS\":[\"Perfect Partitions\",76,\"gainullinildar\"],\"CodeChef-SEAEQ\":[\"Sereja and Equality\",273,\"sereja_adm\"],\"CodeChef-RIVERLND\":[\"Riverland\",15,\"forestryks\"],\"CodeChef-EST\":[\"Equivalent Suffix Tries\",41,\"gennady_adm\"],\"CodeChef-ICPC16F\":[\"Chef and Bipartite Graphs\",1685,\"admin3\"],\"CodeChef-STREDUC\":[\"Reduce string\",107,\"anhdq_adm\"],\"CodeChef-LEBOXES\":[\"Little Elephant and Boxes\",152,\"witaliy_adm\"],\"CodeChef-ICPC16G\":[\"Robolympic Batons\",112,\"admin3\"],\"CodeChef-DOCSDEL\":[\"Permutation Composition Queries\",132,\"isaf27\"],\"CodeChef-MGCH3D\":[\"3D Queries\",79,\"mgch\"],\"CodeChef-TRS\":[\"Queries on Tree\",28,\"mgch\"],\"CodeChef-MGCHPERM\":[\"Misha and Permutation\",93,\"mgch\"],\"CodeChef-WAYPA\":[\"Trip and Palindromes\",37,\"gomelfk\"],\"CodeChef-PBOXES\":[\"Pretty Boxes\",55,\"gamegame\"],\"CodeChef-XRQRS\":[\"Xor Queries\",669,\"gomelfk\"],\"CodeChef-GEOXD\":[\"Easy Geo xD\",29,\"sajib_readd\"],\"CodeChef-DIVISORS\":[\"Something About Divisors\",29,\"anton_adm\"],\"CodeChef-SPS\":[\"Shortest Palindromic Superstring\",60,\"jtnydv25\"],\"CodeChef-SEAPERM3\":[\"Sereja and Permutations 3\",31,\"sereja_adm\"],\"CodeChef-RNG\":[\"Random Number Generator\",181,\"chen_adm\"],\"CodeChef-DEG3MAXT\":[\"Three-Degree-Bounded Maximum Cost Subtree\",42,\"mugurelionut\"],\"CodeChef-DOMSOL\":[\"Domino Solitaire\",645,\"yogesh01\"],\"CodeChef-FBCHEF\":[\"Final Battle of Chef\",119,\"surya_adm\"],\"CodeChef-XORSORT2\":[\"Unusual Sorting\",35,\"isaf27\"],\"CodeChef-PRIMEDST\":[\"Prime Distance On Tree\",1241,\"chen_adm\"],\"CodeChef-MATCH\":[\"Expected Maximum Matching\",95,\"jingbo_adm\"],\"CodeChef-CPP\":[\"Chef Protection Plan\",103,\"vinay_adm\"],\"CodeChef-KNGHTMOV\":[\"Knight Moving\",88,\"anhdq_adm\"],\"CodeChef-RNBWROAD\":[\"Chef and Rainbow Road\",74,\"shisuko\"],\"CodeChef-EASYEX\":[\"Easy exam\",145,\"pavel1996\"],\"CodeChef-QTREE6\":[\"Query on a tree VI\",247,\"xiaodao\"],\"CodeChef-TMP01\":[\"To Queue or not to Queue\",82,\"gerald\"],\"CodeChef-MIXFLVOR\":[\"Mixing flavors\",44,\"kingofnumbers\"],\"CodeChef-LUCKYDAY\":[\"Lucky Days\",85,\"hiroto_adm\"],\"CodeChef-SHORT\":[\"Short\",53,\"gennady_adm\"],\"CodeChef-LELUCKYN\":[\"Little Elephant and Lucky Segment\",22,\"witaliy_adm\"],\"CodeChef-POSTERS\":[\"Tidying Posters\",87,\"zac_adm\"],\"CodeChef-SNCK02\":[\"Powerful Strongholds\",16,\"admin\"],\"CodeChef-JOSEPHUS\":[\"Josephus Again\",58,\"admin3\"],\"CodeChef-FURGRAPH\":[\"Mario and Luigi\",78,\"furko_adm\"],\"CodeChef-SQRECT\":[\"Square in rectangles\",2,\"balajiganapath\"],\"CodeChef-SEQCOUNT\":[\"How many sequences\",59,\"sergey_adm\"],\"CodeChef-CHEFTREE\":[\"Chef and Tree\",87,\"mgch\"],\"CodeChef-CONNECT\":[\"Find a special connected block\",72,\"jingbo_adm\"],\"CodeChef-CULPRO\":[\"Cultural Programme\",382,\"yogesh01\"],\"CodeChef-CNTDSETS\":[\"Counting D-sets\",256,\"mugurelionut\"],\"CodeChef-SADPAIRS\":[\"Chef and Sad Pairs\",119,\"kevinsogo\"],\"CodeChef-TDRIVER\":[\"Taxi Driver\",114,\"kostya_by\"],\"CodeChef-CHEFSUMS\":[\"Chef and Sums\",45,\"wm101\"],\"CodeChef-CHNBGMT\":[\"Chef and Big Matrix\",34,\"antoniuk1\"],\"CodeChef-FLOWERPO\":[\"Flower Pots\",90,\"admin3\"],\"CodeChef-HIGH\":[\"Highways\",46,\"u_admin_codechef_pw\"],\"CodeChef-LOGO\":[\"McHefs 3D Logo\",27,\"vinay_adm\"],\"CodeChef-LEPAPER\":[\"Little Elephant and Sheet\",14,\"witaliy_adm\"],\"CodeChef-RIN\":[\"Course Selection\",314,\"chen_adm\"],\"CodeChef-PKLVES\":[\"Chef and Elephant Tree\",25,\"wxs02wxs0103\"],\"CodeChef-CHEFTRE\":[\"Chef and Tree\",36,\"mgch\"],\"CodeChef-ORDERS\":[\"Ordering the Soldiers\",1262,\"u_admin_codechef_pw\"],\"CodeChef-SONGIF\":[\"Sonya and Gifts\",56,\"smelskiy\"],\"CodeChef-DFSGRID\":[\"Chef and The Recursive Algorithm\",22,\"imran_adm\"],\"CodeChef-SEAINCR\":[\"Sereja and Increasing subsequence\",122,\"sereja_adm\"],\"CodeChef-TRIPS\":[\"Children Trips\",246,\"sergey_adm\"],\"CodeChef-CHEFTRAF\":[\"Traffic in Chefland\",14,\"r_64\"],\"CodeChef-GNUM\":[\"Game of Numbers\",361,\"darkshadows\"],\"CodeChef-OVENTIME\":[\"Renting Spare Oven Time\",30,\"zac_adm\"],\"CodeChef-QMARKS\":[\"Lucy and Question Marks\",92,\"sergey_adm\"],\"CodeChef-CHEFPIC\":[\"Picnic with Chef\",20,\"hloya_ygrt\"],\"CodeChef-DOMNOCUT\":[\"Colored Domino Tilings and Cuts\",32,\"anton_adm\"],\"CodeChef-DIFVAL\":[\"Danya and Different Values\",81,\"sonechko\"],\"CodeChef-CHEFSPAG\":[\"Chef has a Spaghetti Garden\",25,\"kevinsogo\"],\"CodeChef-AVDWAST\":[\"Avoid Wasting\",17,\"hiroto_adm\"],\"CodeChef-GOODGAL\":[\"Good galaxy\",62,\"pavel1996\"],\"CodeChef-POLCHAIN\":[\"Polygon Chain\",31,\"jtnydv25\"],\"CodeChef-OAK\":[\"Persistent oak\",70,\"alex_2oo8\"],\"CodeChef-BLUECHIP\":[\"Escape the Blue Chips\",13,\"fairy_winx\"],\"CodeChef-LAMQUGAM\":[\"Lame Queen Game\",17,\"anton_adm\"],\"CodeChef-ANUDTQ\":[\"Dynamic Trees and Queries\",144,\"anudeep2011\"],\"CodeChef-IMPROVE\":[\"Improve the Permutation\",22,\"sergey_adm\"],\"CodeChef-STRQUER\":[\"Strange Queries\",48,\"mgch\"],\"CodeChef-BTREE\":[\"Union on Tree\",427,\"wjmzbmr\"],\"CodeChef-SIMPPOLY\":[\"A Simple Polygon\",25,\"admin2\"],\"CodeChef-ARMYOFME\":[\"Army of Me\",48,\"kmaaszraa\"],\"CodeChef-IRONISL\":[\"Iron Islands\",47,\"kostya_by\"],\"CodeChef-INVERT\":[\"Gaming Inversion\",25,\"ma5termind\"],\"CodeChef-RGY\":[\"Chef Thanos Wants Perfect Balance\",208,\"mohammed200218\"],\"CodeChef-TASUFFIX\":[\"Very Long Suffix Array\",213,\"tuan_adm\"],\"CodeChef-QUERY\":[\"Observing the Tree\",162,\"sergey_adm\"],\"CodeChef-YASEQ\":[\"Yet Another Sequence\",25,\"david_adm\"],\"CodeChef-PDELIV\":[\"Pizza Delivery\",203,\"qoo2p5\"],\"CodeChef-CHEFTRI4\":[\"Chef and Triangles\",15,\"mgch\"],\"CodeChef-BHD\":[\"Before Having Donuts\",71,\"dolabmoon\"],\"CodeChef-SEGMENTQ\":[\"Segment Queries\",82,\"sergey_adm\"],\"CodeChef-SUMDIS\":[\"Sum of distances\",130,\"r_64\"],\"CodeChef-WINDOW\":[\"Chef attic window\",28,\"anton_adm\"],\"CodeChef-MULHANOI\":[\"Again Multi-Peg Tower of Hanoi\",21,\"admin3\"],\"CodeChef-JADUGAR2\":[\"Chef and Same Old Recurrence 2\",131,\"usaxena95\"],\"CodeChef-SLIS\":[\"Second LIS\",93,\"jingbo_adm\"],\"CodeChef-GQUERY\":[\"Game Revisited\",46,\"deadwing97\"],\"CodeChef-CNNCT2\":[\"Faulty System\",76,\"alexey_adm\"],\"CodeChef-BEARS\":[\"Bears and Bees\",44,\"gennady_adm\"],\"CodeChef-SEINC\":[\"Sereja and Subsegment Increasings\",124,\"sereja_adm\"],\"CodeChef-WESTAND\":[\"Chef and Direction\",47,\"omelyanenko\"],\"CodeChef-ORDNCHS\":[\"Order and Chaos (Interactive)\",79,\"david_adm\"],\"CodeChef-AMR15E\":[\"Avantika\",78,\"suh_ash2008\"],\"CodeChef-DUALPAL\":[\"Chef and the Dual Palindromes\",27,\"imran_adm\"],\"CodeChef-DANYANUM\":[\"Danya and Numbers\",59,\"barenuz\"],\"CodeChef-BINOFEV\":[\"Binomial Fever\",94,\"rezwanarefin01\"],\"CodeChef-MXPATH\":[\"Maximum Tree Path\",55,\"chemthan\"],\"CodeChef-DISTNUM\":[\"Simple Queries\",68,\"mgch\"],\"CodeChef-PLUSEQ\":[\"Plus Equation\",24,\"iloveksh\"],\"CodeChef-COUPLES\":[\"Couples sit next to each other\",55,\"kingofnumbers\"],\"CodeChef-AMR16A\":[\"Tim and BSTs\",23,\"admin3\"],\"CodeChef-APRPS\":[\"Irrational Root\",45,\"chemthan\"],\"CodeChef-SERVERS\":[\"Communicating Servers\",35,\"zac_adm\"],\"CodeChef-PRUNING\":[\"Pruning Trees\",71,\"zac_adm\"],\"CodeChef-BIGTREE\":[\"Big Search Trees\",22,\"kevinsogo\"],\"CodeChef-PARADE\":[\"Annual Parade\",163,\"chen_adm\"],\"CodeChef-CLTNGL\":[\"Triangles in a Grid\",55,\"meooow\"],\"CodeChef-SELEDGE\":[\"Selecting Edges\",38,\"ratingoverflow\"],\"CodeChef-SSPLD\":[\"S Semi-palindromic\",46,\"chemthan\"],\"CodeChef-LYRC\":[\"Music \\u0026 Lyrics\",512,\"kaush_adm\"],\"CodeChef-BALNET\":[\"Balancing Network Revisited\",70,\"alex_2oo8\"],\"CodeChef-ZUBPALK\":[\"G - Palace of King\",25,\"zubaerkh\"],\"CodeChef-CHN10\":[\"Animesh does not gift Malvika on her birthday\",37,\"admin2\"],\"CodeChef-MXMN\":[\"Maximum and Minimum\",77,\"nqiiii\"],\"CodeChef-LKYEDGE\":[\"Lucky Edge\",63,\"fudail\"],\"CodeChef-MOVCOIN2\":[\"Move the Coins 2\",49,\"ssjgz\"],\"CodeChef-BWGAME\":[\"Black-white Board Game\",134,\"sergey_adm\"],\"CodeChef-MONOPLOY\":[\"Gangsters of Treeland\",166,\"utkarsh_lath\"],\"CodeChef-MUFFINS\":[\"Baking Cupcakes\",86,\"zac_adm\"],\"CodeChef-AMPUZZLE\":[\"Sliding Puzzle\",3,\"balajiganapath\"],\"CodeChef-ALLPOLY\":[\"Defend the Recipe\",57,\"kevinsogo\"],\"CodeChef-SKIRES\":[\"Ski Resort\",66,\"tomaz_adm\"],\"CodeChef-LLLGRAPH\":[\"Line Line Line Graph\",35,\"gainullinildar\"],\"CodeChef-CNTHEX\":[\"Counting Hexagons\",61,\"imran_adm\"],\"CodeChef-STEPNUMS\":[\"Stepping Numbers\",84,\"dor_adm\"],\"CodeChef-KOL1511\":[\"Wait for it\",28,\"piyushkumar\"],\"CodeChef-SEZ\":[\"Special Economic Zone\",121,\"chen_adm\"],\"CodeChef-DIFTRIP\":[\"Different Trips\",188,\"tuan_adm\"],\"CodeChef-SUBQUERY\":[\"Substring Query\",109,\"sergey_adm\"],\"CodeChef-REFORMS\":[\"Reforms, Reforms Never Change\",36,\"balajiganapath\"],\"CodeChef-FGTREE\":[\"Forgotten Tree 9\",116,\"lg5293\"],\"CodeChef-POST\":[\"Post Office\",19,\"david_adm\"],\"CodeChef-CUSTPRIM\":[\"Payton numbers\",38,\"kevinsogo\"],\"CodeChef-CHN12\":[\"Praveen falls from a tall tree\",20,\"admin2\"],\"CodeChef-ISOARRAY\":[\"Chef and Isomorphic Array\",34,\"chemthan\"],\"CodeChef-CKSCHOOL\":[\"Preferred Cooking Schools\",26,\"anil_adm\"],\"CodeChef-QGRID\":[\"Querying on a Grid\",96,\"r_64\"],\"CodeChef-LMATRIX3\":[\"Make It Zero 3\",26,\"ACRush\"],\"CodeChef-SHRINES\":[\"Brahma and Shiva\",31,\"alei\"],\"CodeChef-FARGRAPH\":[\"Far Graphs\",29,\"admin3\"],\"CodeChef-NPLANAR\":[\"Not even planar\",84,\"xellos0\"],\"CodeChef-MAXCIR\":[\"Max Circumference\",31,\"chen_adm\"],\"CodeChef-CBAL\":[\"Chef and Balanced Strings\",175,\"ma5termind\"],\"CodeChef-LPARTY\":[\"Little Party\",113,\"pavel1996\"],\"CodeChef-ALMROW\":[\"Bear and Almost Row\",17,\"errichto\"],\"CodeChef-TERVEC\":[\"Terrible vectors\",115,\"pavel1996\"],\"CodeChef-BEARTRAP\":[\"Bear and Cat Trap\",59,\"errichto\"],\"CodeChef-DISCAREA\":[\"Black Discs\",33,\"triveni\"],\"CodeChef-COVERING\":[\"Covering Sets\",294,\"kostya_by\"],\"CodeChef-HAMILG\":[\"A game on a graph\",98,\"xellos0\"],\"CodeChef-EXPREP\":[\"Expected Repetitions\",58,\"aviroop123\"],\"CodeChef-N2\":[\"Heroes of Magical Might\",41,\"Shankar_IT150\"],\"CodeChef-TEAMSEL\":[\"Team Selection\",309,\"admin\"],\"CodeChef-CHEFBOOK\":[\"Chefbook\",79,\"shiplu_adm\"],\"CodeChef-STARROAD\":[\"Roads in Stars\",44,\"mgch\"],\"CodeChef-TRIPWAYS\":[\"A Leisurely Journey\",64,\"david_adm\"],\"CodeChef-TABISHOP\":[\"Bishops\",30,\"tuan_adm\"],\"CodeChef-TUPLES2\":[\"Path Triples On Tree\",57,\"r_64\"],\"CodeChef-POLYSTR\":[\"Polygon and String\",33,\"admin2\"],\"CodeChef-FCTR\":[\"Factorize\",51,\"rajat1603\"],\"CodeChef-AUTHEN\":[\"Authentication Failed\",51,\"gennady_adm\"],\"CodeChef-REALSET\":[\"Petya and Sequence\",68,\"KADR\"],\"CodeChef-GRAPHCT\":[\"Graph Counting\",97,\"syco_adm\"],\"CodeChef-M4\":[\"Toll Trolls\",63,\"admin\"],\"CodeChef-M5\":[\"Overlapping discs\",28,\"admin\"],\"CodeChef-LONGART\":[\"Longest Article\",32,\"istva_adm\"],\"CodeChef-WALKBT\":[\"Walks on the binary tree\",160,\"altruist_\"],\"CodeChef-M1\":[\"The Mine Field\",42,\"Shankar_IT150\"],\"CodeChef-M2\":[\"Motorbike Racing\",18,\"Shankar_IT150\"],\"CodeChef-PALSTR\":[\"Chef And Palindromes\",69,\"ma5termind\"],\"CodeChef-GERALD2\":[\"Black and White Tree\",94,\"gerald\"],\"CodeChef-SIGFIB\":[\"Team Sigma and Fibonacci\",87,\"devuy11\"],\"CodeChef-ASTRD\":[\"Asteroids\",52,\"pavel1996\"],\"CodeChef-INVBINCF\":[\"Inverse Binomial Coefficient\",18,\"anton_adm\"],\"CodeChef-HLD\":[\"Heavy-Light Decomposition\",91,\"chen_adm\"],\"CodeChef-CNTL\":[\"Counting is life\",43,\"kr_abhinav\"],\"CodeChef-WIQ\":[\"Waiting in a Queue\",74,\"fudail\"],\"CodeChef-DGCD\":[\"Dynamic GCD\",366,\"nikhil_adm\"],\"CodeChef-KSUFFIX\":[\"K-th Lexicographical Suffix\",21,\"chemthan\"],\"CodeChef-CLANDLBL\":[\"Chef And Land Labeling\",183,\"kam_adm\"],\"CodeChef-ZUBHTREE\":[\"F - Huge Number of Trees\",28,\"zubaerkh\"],\"CodeChef-JUMP\":[\"Jump mission\",310,\"kingofnumbers\"],\"CodeChef-ROUTES\":[\"Safe Routes\",32,\"sergey_adm\"],\"CodeChef-HBEAR\":[\"The Hungry Bear\",86,\"harta_adm\"],\"CodeChef-SERSUM\":[\"Series Sum\",73,\"chemthan\"],\"CodeChef-DIVNODIV\":[\"Divisors number divisibility\",27,\"anton_adm\"],\"CodeChef-GRIDGAME\":[\"Game on a Grid\",21,\"david_adm\"],\"CodeChef-TWOROADS\":[\"Two Roads\",51,\"tuan_adm\"],\"CodeChef-CHN04\":[\"Malvika gets bored along with her Cats\",23,\"admin2\"],\"CodeChef-TACTQUER\":[\"Shortest path queries\",33,\"tuan_adm\"],\"CodeChef-PALPROB\":[\"Palindromeness\",222,\"sergey_adm\"],\"CodeChef-TREEPATH\":[\"Decompose the Tree\",47,\"sergey_adm\"],\"CodeChef-QTREE\":[\"Queries on tree again!\",113,\"tuan_adm\"],\"CodeChef-DIVIDEN\":[\"Divide or die\",73,\"pavel1996\"],\"CodeChef-TREECNT2\":[\"Counting on a Tree\",145,\"sergey_adm\"],\"CodeChef-TESTERS\":[\"Vacation\",111,\"roman_adm\"],\"CodeChef-CIELQUAK\":[\"Ciel and Earthquake\",27,\"hiroto_adm\"],\"CodeChef-GENIND\":[\"Generalized Independent Sets\",39,\"zac_adm\"],\"CodeChef-N5\":[\"Traffic jam\",65,\"admin\"],\"CodeChef-TROOT\":[\"Roots of a Tree\",36,\"sergey_adm\"],\"CodeChef-GRAPHCNT\":[\"Counting on a directed graph\",321,\"ztxz16\"],\"CodeChef-BOUNCE\":[\"Advanced Cooking Machine\",28,\"kevinsogo\"]}","joined":false,"groups":{}},"managingGroups":{},"author":"memset0","updateTime":1655569151000,"title":"[Workbook] CodeChef Hard Level Problems (Dynamic Updated)","dislikeCnt":0,"content":"Source: https://www.codechef.com/problems/hard\n\n[problem:CodeChef-CULPRO]\n[problem:CodeChef-REACAR]\n[problem:CodeChef-VOGOZO]\n[problem:CodeChef-ANUAAA]\n[problem:CodeChef-DIGITS]\n[problem:CodeChef-ADJLEAF2]\n[problem:CodeChef-ACMKANPC]\n[problem:CodeChef-NGONS]\n[problem:CodeChef-JOSEPHUS]\n[problem:CodeChef-YAEXP]\n[problem:CodeChef-KHULJA]\n[problem:CodeChef-SQRECT]\n[problem:CodeChef-RIVERLND]\n[problem:CodeChef-AMR15E]\n[problem:CodeChef-KOL15E]\n[problem:CodeChef-SPS]\n[problem:CodeChef-OWCAFILE]\n[problem:CodeChef-KOL1511]\n[problem:CodeChef-CHN12]\n[problem:CodeChef-CHN04]\n[problem:CodeChef-BIGTREE]\n[problem:CodeChef-ICPC16F]\n[problem:CodeChef-KOL16C]\n[problem:CodeChef-KOL16G]\n[problem:CodeChef-MEETUP]\n[problem:CodeChef-CAPTCITI]\n[problem:CodeChef-GQUERY]\n[problem:CodeChef-MINDEG]\n[problem:CodeChef-HIGH]\n[problem:CodeChef-ZUBPALK]\n[problem:CodeChef-ZUBSPOIL]\n[problem:CodeChef-SCIENCEF]\n[problem:CodeChef-SIMPPOLY]\n[problem:CodeChef-TRS]\n[problem:CodeChef-REACHRIG]\n[problem:CodeChef-DOMSOL]\n[problem:CodeChef-GLBEGA]\n[problem:CodeChef-ACMKANPA]\n[problem:CodeChef-POLYSTR]\n[problem:CodeChef-ACMKANPE]\n[problem:CodeChef-MULHANOI]\n[problem:CodeChef-ABSDIFFS]\n[problem:CodeChef-REFORMS]\n[problem:CodeChef-STRSUM]\n[problem:CodeChef-ORDNCHS]\n[problem:CodeChef-KSUFFIX]\n[problem:CodeChef-POLICE]\n[problem:CodeChef-KOL15D]\n[problem:CodeChef-LALALANT]\n[problem:CodeChef-CHN10]\n[problem:CodeChef-ICPC16G]\n[problem:CodeChef-AMR16A]\n[problem:CodeChef-KOL16D]\n[problem:CodeChef-KOL16I]\n[problem:CodeChef-WIQ]\n[problem:CodeChef-MATRIXUM]\n[problem:CodeChef-ZUBHTREE]\n[problem:CodeChef-ZUBSECRT]\n[problem:CodeChef-ORDERS]\n[problem:CodeChef-DISCAREA]\n[problem:CodeChef-TEAMSEL]\n[problem:CodeChef-LIGHTARE]\n[problem:CodeChef-AMPUZZLE]\n[problem:CodeChef-SNCK02]\n[problem:CodeChef-GRAPHCT]\n[problem:CodeChef-HBEAR]\n[problem:CodeChef-POSTERS]\n[problem:CodeChef-E3]\n[problem:CodeChef-F4]\n[problem:CodeChef-F6]\n[problem:CodeChef-E5]\n[problem:CodeChef-N5]\n[problem:CodeChef-J5]\n[problem:CodeChef-MSTONES]\n[problem:CodeChef-J4]\n[problem:CodeChef-PERMUTE]\n[problem:CodeChef-H3]\n[problem:CodeChef-CARDSHUF]\n[problem:CodeChef-C1]\n[problem:CodeChef-A7]\n[problem:CodeChef-G5]\n[problem:CodeChef-J6]\n[problem:CodeChef-M1]\n[problem:CodeChef-N2]\n[problem:CodeChef-STEPNUMS]\n[problem:CodeChef-TKCONVEX]\n[problem:CodeChef-DIGFORST]\n[problem:CodeChef-JADUGAR]\n[problem:CodeChef-XDCOMP]\n[problem:CodeChef-PRUNING]\n[problem:CodeChef-A5]\n[problem:CodeChef-STREDUC]\n[problem:CodeChef-GENETICS]\n[problem:CodeChef-REVERSED]\n[problem:CodeChef-CLONES]\n[problem:CodeChef-MINESREV]\n[problem:CodeChef-OVENTIME]\n[problem:CodeChef-G4]\n[problem:CodeChef-BB]\n[problem:CodeChef-EVENPOLY]\n[problem:CodeChef-LYRC]\n[problem:CodeChef-INMAT]\n[problem:CodeChef-M4]\n[problem:CodeChef-D4]\n[problem:CodeChef-SEALCM]\n[problem:CodeChef-GENIND]\n[problem:CodeChef-TRDST]\n[problem:CodeChef-LCM]\n[problem:CodeChef-PRDIVSUM]\n[problem:CodeChef-FARASA]\n[problem:CodeChef-SERVERS]\n[problem:CodeChef-LUCKYDAY]\n[problem:CodeChef-LEBOXES]\n[problem:CodeChef-BUYLAND]\n[problem:CodeChef-MISINT2]\n[problem:CodeChef-RANKA]\n[problem:CodeChef-SHORTCIR]\n[problem:CodeChef-BEARS]\n[problem:CodeChef-SKIRES]\n[problem:CodeChef-PDELIV]\n[problem:CodeChef-PARSIN]\n[problem:CodeChef-FUNCTION]\n[problem:CodeChef-MUFFINS]\n[problem:CodeChef-D7]\n[problem:CodeChef-SPMATRIX]\n[problem:CodeChef-DOMNOCUT]\n[problem:CodeChef-EVILBOOK]\n[problem:CodeChef-SHORT]\n[problem:CodeChef-PRIMEDST]\n[problem:CodeChef-PARRTY]\n[problem:CodeChef-XRQRS]\n[problem:CodeChef-DGCD]\n[problem:CodeChef-TWOCOMP]\n[problem:CodeChef-M5]\n[problem:CodeChef-GNUM]\n[problem:CodeChef-JERRYTOM]\n[problem:CodeChef-ARRAYSUM]\n[problem:CodeChef-SEAEQ]\n[problem:CodeChef-LVMFFN]\n[problem:CodeChef-CNTHEX]\n[problem:CodeChef-GERALD07]\n[problem:CodeChef-DIFTRIP]\n[problem:CodeChef-FNCS]\n[problem:CodeChef-FGTREE]\n[problem:CodeChef-CNTDSETS]\n[problem:CodeChef-CSTREE]\n[problem:CodeChef-STREETTA]\n[problem:CodeChef-JADUGAR2]\n[problem:CodeChef-APAIRS]\n[problem:CodeChef-CLANDLBL]\n[problem:CodeChef-COUNTARI]\n[problem:CodeChef-HULL]\n[problem:CodeChef-XRMTRX]\n[problem:CodeChef-WTHINGS]\n[problem:CodeChef-CYDB]\n[problem:CodeChef-FINDSEQ]\n[problem:CodeChef-M2]\n[problem:CodeChef-QTREE6]\n[problem:CodeChef-DISTRING]\n[problem:CodeChef-AUTHEN]\n[problem:CodeChef-PSUM]\n[problem:CodeChef-DISTNUM2]\n[problem:CodeChef-OVERPNT]\n[problem:CodeChef-BINOFEV]\n[problem:CodeChef-DOCSDEL]\n[problem:CodeChef-TICKETS]\n[problem:CodeChef-SHORT2]\n[problem:CodeChef-ROOTMST]\n[problem:CodeChef-DODGERS]\n[problem:CodeChef-TERVEC]\n[problem:CodeChef-KNGHTMOV]\n[problem:CodeChef-POST]\n[problem:CodeChef-QTREE]\n[problem:CodeChef-DIVISORS]\n[problem:CodeChef-FCTR]\n[problem:CodeChef-NOSS]\n[problem:CodeChef-SEGMENTQ]\n[problem:CodeChef-SEZ]\n[problem:CodeChef-ANUSAR]\n[problem:CodeChef-EGGFREE]\n[problem:CodeChef-FBCHEF]\n[problem:CodeChef-SONGIF]\n[problem:CodeChef-TAPAIR]\n[problem:CodeChef-SINSUMQ]\n[problem:CodeChef-CHEFTRAF]\n[problem:CodeChef-COOLNUM]\n[problem:CodeChef-ANUDTQ]\n[problem:CodeChef-FN]\n[problem:CodeChef-A8]\n[problem:CodeChef-SUBQUERY]\n[problem:CodeChef-POLY]\n[problem:CodeChef-DIFVAL]\n[problem:CodeChef-TESTERS]\n[problem:CodeChef-PTOSS]\n[problem:CodeChef-TDRIVER]\n[problem:CodeChef-CHEFKNN]\n[problem:CodeChef-MDSWIN]\n[problem:CodeChef-LAMQUGAM]\n[problem:CodeChef-BIBOARD]\n[problem:CodeChef-CUTTREE]\n[problem:CodeChef-SEABOX]\n[problem:CodeChef-SEAORD]\n[problem:CodeChef-RNBWROAD]\n[problem:CodeChef-SSPLD]\n[problem:CodeChef-DANYANUM]\n[problem:CodeChef-MXMN]\n[problem:CodeChef-ROC]\n[problem:CodeChef-LUCASTH]\n[problem:CodeChef-PPTREE]\n[problem:CodeChef-LCH15JGH]\n[problem:CodeChef-SFUNC]\n[problem:CodeChef-WINDOW]\n[problem:CodeChef-CKSCHOOL]\n[problem:CodeChef-CBAL]\n[problem:CodeChef-KILLKTH]\n[problem:CodeChef-SEINC]\n[problem:CodeChef-PFRUIT]\n[problem:CodeChef-JIIT]\n[problem:CodeChef-GOODSEGS]\n[problem:CodeChef-PPARTS]\n[problem:CodeChef-QSTRING]\n[problem:CodeChef-DAGCH]\n[problem:CodeChef-SEAINCR]\n[problem:CodeChef-PSTONES]\n[problem:CodeChef-CHEFC]\n[problem:CodeChef-SEQCOUNT]\n[problem:CodeChef-GOODGAL]\n[problem:CodeChef-QRECT]\n[problem:CodeChef-MGCHPERM]\n[problem:CodeChef-FURGRAPH]\n[problem:CodeChef-HLD]\n[problem:CodeChef-CHEFLST]\n[problem:CodeChef-MATCH]\n[problem:CodeChef-SEAPERMS]\n[problem:CodeChef-WALKBT]\n[problem:CodeChef-UPDTREE]\n[problem:CodeChef-GERALD2]\n[problem:CodeChef-MAGIC]\n[problem:CodeChef-QUERY]\n[problem:CodeChef-EXPCOMM]\n[problem:CodeChef-TSUM2]\n[problem:CodeChef-PUPPYGCD]\n[problem:CodeChef-BNGAME]\n[problem:CodeChef-LONGART]\n[problem:CodeChef-PKLVES]\n[problem:CodeChef-RGY]\n[problem:CodeChef-QMARKS]\n[problem:CodeChef-MONOPLOY]\n[problem:CodeChef-BWGAME]\n[problem:CodeChef-ADADET]\n[problem:CodeChef-MXDIST]\n[problem:CodeChef-ASTRD]\n[problem:CodeChef-HYPER]\n[problem:CodeChef-TREECNT2]\n[problem:CodeChef-DIVIDEN]\n[problem:CodeChef-FLOWERPO]\n[problem:CodeChef-SEAARC]\n[problem:CodeChef-BHD]\n[problem:CodeChef-LECOINS]\n[problem:CodeChef-STARROAD]\n[problem:CodeChef-LELUCKYN]\n[problem:CodeChef-DARTSEGM]\n[problem:CodeChef-DMCS]\n[problem:CodeChef-MULDIG]\n[problem:CodeChef-JUMP]\n[problem:CodeChef-TSEQ]\n[problem:CodeChef-TWOROADS]\n[problem:CodeChef-TROOT]\n[problem:CodeChef-GERALD08]\n[problem:CodeChef-DPOWPERM]\n[problem:CodeChef-PARADE]\n[problem:CodeChef-PANIC]\n[problem:CodeChef-GTHRONES]\n[problem:CodeChef-SIGFIB]\n[problem:CodeChef-DIVNODIV]\n[problem:CodeChef-CHEFFIB]\n[problem:CodeChef-SERSUM]\n[problem:CodeChef-RUBBER]\n[problem:CodeChef-WESTAND]\n[problem:CodeChef-EST]\n[problem:CodeChef-SEAINVS]\n[problem:CodeChef-MARTARTS]\n[problem:CodeChef-TULIPS]\n[problem:CodeChef-REALSET]\n[problem:CodeChef-CHEFEQUA]\n[problem:CodeChef-MAXDTREE]\n[problem:CodeChef-MGCH3D]\n[problem:CodeChef-WEASELSC]\n[problem:CodeChef-SUMDIS]\n[problem:CodeChef-TSUBSTR]\n[problem:CodeChef-CNNCT2]\n[problem:CodeChef-BEARTRAP]\n[problem:CodeChef-TMP01]\n[problem:CodeChef-COVERING]\n[problem:CodeChef-WRDSUM]\n[problem:CodeChef-BALNET]\n[problem:CodeChef-ALLPOLY]\n[problem:CodeChef-ARMYOFME]\n[problem:CodeChef-CHEFSUMS]\n[problem:CodeChef-TRIPS]\n[problem:CodeChef-RRTREE2]\n[problem:CodeChef-RNG]\n[problem:CodeChef-XORSORT2]\n[problem:CodeChef-NPIN]\n[problem:CodeChef-CUCUMBER]\n[problem:CodeChef-RIVER]\n[problem:CodeChef-LPARTY]\n[problem:CodeChef-MIXFLVOR]\n[problem:CodeChef-CHEFONM]\n[problem:CodeChef-SADPAIRS]\n[problem:CodeChef-LKYEDGE]\n[problem:CodeChef-DEVLOCK]\n[problem:CodeChef-PBOXES]\n[problem:CodeChef-GRAPHCNT]\n[problem:CodeChef-SELEDGE]\n[problem:CodeChef-REBTET]\n[problem:CodeChef-CHEFPC]\n[problem:CodeChef-TUPLES]\n[problem:CodeChef-XETF]\n[problem:CodeChef-OAK]\n[problem:CodeChef-SQRGOOD]\n[problem:CodeChef-CONNECT]\n[problem:CodeChef-BIPPAIR]\n[problem:CodeChef-EASYEX]\n[problem:CodeChef-TABISHOP]\n[problem:CodeChef-TUPLES2]\n[problem:CodeChef-RIN]\n[problem:CodeChef-PALINDEQ]\n[problem:CodeChef-LLLGRAPH]\n[problem:CodeChef-GEOCHEAT]\n[problem:CodeChef-POLCHAIN]\n[problem:CodeChef-APRPS]\n[problem:CodeChef-KILLER]\n[problem:CodeChef-GRDSTD]\n[problem:CodeChef-CIRCLEAT]\n[problem:CodeChef-BTMNTREE]\n[problem:CodeChef-STRQUERY]\n[problem:CodeChef-BIKE]\n[problem:CodeChef-TRIPWAYS]\n[problem:CodeChef-PRECPAIR]\n[problem:CodeChef-CPP]\n[problem:CodeChef-TRCNTCT]\n[problem:CodeChef-SPSHORT]\n[problem:CodeChef-MAXCIR]\n[problem:CodeChef-DDART]\n[problem:CodeChef-PUSHFLOW]\n[problem:CodeChef-DEG3MAXT]\n[problem:CodeChef-CHEFKC]\n[problem:CodeChef-MGCHGYM]\n[problem:CodeChef-XORTREEH]\n[problem:CodeChef-QPOINT]\n[problem:CodeChef-SEAPERM3]\n[problem:CodeChef-FIBTREE]\n[problem:CodeChef-CHEFPOL]\n[problem:CodeChef-NPLANAR]\n[problem:CodeChef-COT5]\n[problem:CodeChef-IMPROVE]\n[problem:CodeChef-CIELQUAK]\n[problem:CodeChef-HAMILG]\n[problem:CodeChef-STRQUER]\n[problem:CodeChef-SONIQUE]\n[problem:CodeChef-TREEPATH]\n[problem:CodeChef-QGRID]\n[problem:CodeChef-SUBGRAPH]\n[problem:CodeChef-MXPATH]\n[problem:CodeChef-GEOXD]\n[problem:CodeChef-CHEFTRE]\n[problem:CodeChef-CHEFTREE]\n[problem:CodeChef-PALPROB]\n[problem:CodeChef-WAYPA]\n[problem:CodeChef-IRONISL]\n[problem:CodeChef-CUREK]\n[problem:CodeChef-CONPOIN]\n[problem:CodeChef-INVERT]\n[problem:CodeChef-PLUSEQ]\n[problem:CodeChef-TRICONT]\n[problem:CodeChef-SLIS]\n[problem:CodeChef-COOK82E]\n[problem:CodeChef-SONATR]\n[problem:CodeChef-CHNBGMT]\n[problem:CodeChef-MINPOLY]\n[problem:CodeChef-TREEBAL]\n[problem:CodeChef-VILLNET]\n[problem:CodeChef-TACTQUER]\n[problem:CodeChef-FLYDIST]\n[problem:CodeChef-CHEFBOOK]\n[problem:CodeChef-BOUNCE]\n[problem:CodeChef-HAMEL]\n[problem:CodeChef-MGCHGEOM]\n[problem:CodeChef-SHRINES]\n[problem:CodeChef-MOVCOIN2]\n[problem:CodeChef-EXPREP]\n[problem:CodeChef-CHEFPIC]\n[problem:CodeChef-SEQTOWER]\n[problem:CodeChef-DFSGRID]\n[problem:CodeChef-TBGRAPH]\n[problem:CodeChef-COUPLES]\n[problem:CodeChef-ROUTES]\n[problem:CodeChef-CNTDIGIT]\n[problem:CodeChef-CLOWAY]\n[problem:CodeChef-DISTNUM]\n[problem:CodeChef-CLTNGL]\n[problem:CodeChef-PALSTR]\n[problem:CodeChef-CHANGE]\n[problem:CodeChef-CUSTPRIM]\n[problem:CodeChef-INVBINCF]\n[problem:CodeChef-ALICE]\n[problem:CodeChef-BTREE]\n[problem:CodeChef-BINOMSUM]\n[problem:CodeChef-ISOARRAY]\n[problem:CodeChef-QPOLYSUM]\n[problem:CodeChef-GRIDGAME]\n[problem:CodeChef-CIELHACK]\n[problem:CodeChef-LMATRIX3]\n[problem:CodeChef-ADJLEAF]\n[problem:CodeChef-TREEQ1]\n[problem:CodeChef-REARRAN]\n[problem:CodeChef-DRAGONST]\n[problem:CodeChef-CTREE]\n[problem:CodeChef-CHEFSPAG]\n[problem:CodeChef-CMPVIRS]\n[problem:CodeChef-TASUFFIX]\n[problem:CodeChef-FSFSFS]\n[problem:CodeChef-BESTTRI]\n[problem:CodeChef-ALMROW]\n[problem:CodeChef-EFLIP]\n[problem:CodeChef-TUZTRN]\n[problem:CodeChef-CAKE2AM]\n[problem:CodeChef-ANUSFR]\n[problem:CodeChef-FARGRAPH]\n[problem:CodeChef-CHEFARMY]\n[problem:CodeChef-MUFFINS2]\n[problem:CodeChef-LEPAPER]\n[problem:CodeChef-BLUECHIP]\n[problem:CodeChef-CIELKARA]\n[problem:CodeChef-MINWDSUM]\n[problem:CodeChef-LOGO]\n[problem:CodeChef-ADAFARM]\n[problem:CodeChef-DUALPAL]\n[problem:CodeChef-YASEQ]\n[problem:CodeChef-CIELBALL]\n[problem:CodeChef-CHEFTRI4]\n[problem:CodeChef-PSLISCNT]\n[problem:CodeChef-AVDWAST]\n[problem:CodeChef-CNTL]\n\u003cbr\u003e\n\n\n\n\u003csmall\u003eProblem ids were fetched using an automated program, with its source code [here](https://github.com/memset0/vjudge-workbook-generator/blob/master/src/spider/cc-hard.js).\u003c/small\u003e\n\n\u003csmall\u003eThis workbook is generated by [@memset0/vjudge-workbook-generator](https://github.com/memset0/vjudge-workbook-generator) at 2022-06-19 00:19:09\u003c/small\u003e\n","threadId":124646,"likeCnt":2,"createTime":1655519681000,"isWorkbook":true,"viewCnt":353,"openness":2,"fav":false,"id":2873,"trustable":false}
