constructive algorithms - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	1188	P1672F2 Checker for Array Shuffling constructive algorithms dfs and similar graphs *2800	0 / 0	10
	1187	P1672G Cross Xor constructive algorithms graphs math matrices *3200	0 / 0	10
	1186	P1672H Zigu Zagu constructive algorithms data structures greedy *2700	0 / 0	10
	1179	P1673F Anti-Theft Road Planning bitmasks constructive algorithms divide and conquer greedy interactive math *2400	0 / 0	9
	1178	P1674A Number Transformation constructive algorithms math *800	0 / 0	3
	1175	P1674D A-B-C Sort constructive algorithms implementation sortings *1200	0 / 0	4
	1174	P1674E Breaking the Wall binary search brute force constructive algorithms greedy math *2000	0 / 0	7
	1153	P1677C Tokitsukaze and Two Colorful Tapes constructive algorithms dfs and similar graphs greedy *1900	0 / 0	6
	1127	P1682B AND Sorting bitmasks constructive algorithms sortings *1100	0 / 0	3
	1126	P1682C LIS or Reverse LIS? constructive algorithms greedy implementation math *1400	0 / 0	4
	1125	P1682D Circular Spanning Tree constructive algorithms implementation trees *2000	0 / 0	7
	1124	P1682E Unordered Swaps constructive algorithms dfs and similar graphs greedy math sortings trees *2700	0 / 0	10
	1122	P1684A Digit Minimization constructive algorithms games math strings *800	0 / 0	3
	1121	P1684B Z mod X = C constructive algorithms math *800	0 / 0	3
	1120	P1684C Column Swapping brute force constructive algorithms greedy implementation sortings *1400	0 / 0	4
	1119	P1684D Traps constructive algorithms greedy sortings *1700	1 / 1	5
	1118	P1684E MEX vs DIFF binary search brute force constructive algorithms data structures greedy two pointers *2100	0 / 0	7
	1116	P1684G Euclid Guess constructive algorithms flows graph matchings math number theory *2800	0 / 0	10
	1114	P1684H Hard Cut constructive algorithms dfs and similar divide and conquer math *3400	0 / 0	10
	1112	P1685A Circular Local MiniMax constructive algorithms greedy sortings *1100	0 / 0	3
	1109	P1685C Bring Balance brute force constructive algorithms greedy *2600	0 / 0	10
	1107	P1685D1 Permutation Weight (Easy Version) constructive algorithms dfs and similar dsu *2800	0 / 0	10
	1105	P1685D2 Permutation Weight (Hard Version) constructive algorithms greedy *3500	0 / 0	10
	1095	P1687B Railway System constructive algorithms graphs greedy interactive sortings *1700	0 / 0	5
	1088	P1687E Become Big For Me combinatorics constructive algorithms greedy math number theory *3500	0 / 0	10
	1082	P1688B Patchouli's Magical Talisman bitmasks constructive algorithms greedy sortings *800	0 / 0	3
	1081	P1688C Manipulating History constructive algorithms greedy strings *1700	0 / 0	5
	1071	P1689E ANDfinity bitmasks brute force constructive algorithms dfs and similar dsu graphs *2500	0 / 0	9
	1068	P1690A Print a Pedestal (Codeforces logo?) constructive algorithms greedy *800	0 / 0	3
	1060	P1691B Shoe Shuffling constructive algorithms greedy implementation two pointers *1000	0 / 0	3
	1059	P1691C Sum of Substrings brute force constructive algorithms greedy math strings *1400	0 / 0	4
	1058	P1691D Max GEQ Sum binary search constructive algorithms data structures divide and conquer implementation two pointers *1800	0 / 0	6
	1039	P1694B Paranoid String constructive algorithms greedy *1200	0 / 0	4
	1032	P1695D1 Tree Queries (Easy Version) brute force constructive algorithms dfs and similar dp greedy trees *2200	0 / 0	8
	1030	P1695D2 Tree Queries (Hard Version) constructive algorithms dfs and similar dp greedy trees *2300	0 / 0	8
	1029	P1695E Ambiguous Dominoes constructive algorithms dfs and similar graphs *2700	0 / 0	10
	1026	P1696C Fishingprince Plays With Array constructive algorithms greedy implementation math *1400	0 / 0	4
	1023	P1696D Permutation Graph binary search constructive algorithms data structures divide and conquer greedy shortest paths *1900	0 / 0	6
	1019	P1696F Tree Recovery brute force constructive algorithms dfs and similar dsu graphs trees *2600	0 / 0	10
	1010	P1697C awoo's Favorite Problem binary search constructive algorithms data structures greedy implementation strings two pointers *1400	0 / 0	4
	1007	P1697D Guess The String binary search constructive algorithms interactive *1900	0 / 0	6
	1005	P1697E Coloring brute force combinatorics constructive algorithms dp geometry graphs greedy implementation math *2400	0 / 0	9
	1003	P1697F Too Many Constraints 2-sat constructive algorithms graphs implementation *2800	0 / 0	10
	999	P1698B Rising Sand constructive algorithms greedy implementation *800	0 / 0	3
	996	P1698D Fixed Point Guessing binary search constructive algorithms interactive *1600	0 / 0	5
	991	P1698F Equal Reversal constructive algorithms graphs implementation math *2800	0 / 0	10
	988	P1699A The Third Three Number Problem constructive algorithms math *800	0 / 0	3
	985	P1699B Almost Ternary Matrix bitmasks constructive algorithms matrices *900	0 / 0	3
	984	P1699C The Third Problem combinatorics constructive algorithms math *1700	0 / 0	5
	981	P1700A Optimal Path constructive algorithms greedy math *800	0 / 0	3
	980	P1700B Palindromic Numbers constructive algorithms implementation math *1100	0 / 0	3
	979	P1700C Helping the Nature constructive algorithms data structures greedy *1700	0 / 0	5
	977	P1700E Serega the Pirate brute force constructive algorithms *2600	0 / 0	10
	976	P1700F Puzzle constructive algorithms dp greedy *2600	0 / 0	10
	969	P1702A Round Down the Price constructive algorithms *800	0 / 0	3
	964	P1702F Equate Multisets constructive algorithms data structures greedy math number theory *1700	0 / 0	5
	954	P1704A Two 0-1 Sequences constructive algorithms greedy *800	0 / 0	3
	951	P1704D Magical Array constructive algorithms hashing implementation math *1900	0 / 0	6
	950	P1704E Count Seconds brute force constructive algorithms dp graphs implementation math *2200	0 / 0	8
	949	P1704F Colouring Game constructive algorithms dp games *2600	0 / 0	10
	948	P1704G Mio and Lucky Array constructive algorithms fft math strings *3500	0 / 0	10
	947	P1704H1 Game of AI (easy version) combinatorics constructive algorithms dp fft math *3200	0 / 0	10
	944	P1705B Mark the Dust Sweeper constructive algorithms greedy implementation *900	0 / 0	3
	942	P1705D Mark and Lightbulbs combinatorics constructive algorithms greedy math sortings *1800	0 / 0	6
	940	P1705F Mark and the Online Exam bitmasks constructive algorithms interactive probabilities *2900	0 / 0	10
	939	P1706A Another String Minimization Problem 2-sat constructive algorithms greedy string suffix structures strings *800	0 / 0	3
	936	P1706D1 Chopping Carrots (Easy Version) binary search brute force constructive algorithms greedy number theory *1700	0 / 0	5
	935	P1706D2 Chopping Carrots (Hard Version) brute force constructive algorithms data structures dp greedy math number theory two pointers *2400	0 / 0	9
	933	P1707A Doremy's IQ binary search constructive algorithms greedy implementation *1600	0 / 0	5
	928	P1707F Bugaboo bitmasks constructive algorithms dp number theory *3500	0 / 0	10
	926	P1708B Difference of GCDs constructive algorithms math *1100	0 / 0	3
	923	P1709C Recover an RBS constructive algorithms greedy implementation strings *1800	0 / 0	6
	919	P1710A Color the Picture constructive algorithms greedy math *1500	0 / 0	5
	917	P1710C XOR Triangle bitmasks brute force constructive algorithms dp greedy math *2500	0 / 0	9
	916	P1710D Recover the Tree constructive algorithms trees *3400	0 / 0	10
	914	P1711A Perfect Permutation constructive algorithms *800	0 / 0	3
	911	P1712B Woeful Permutation constructive algorithms greedy number theory *800	0 / 0	3
	909	P1712D Empty Graph binary search constructive algorithms data structures greedy shortest paths *2000	0 / 0	7
	904	P1713B Optimal Reduction constructive algorithms sortings *1000	0 / 0	3
	903	P1713C Build Permutation constructive algorithms dp math *1200	0 / 0	4
	902	P1713D Tournament Countdown constructive algorithms greedy interactive number theory probabilities *1800	0 / 0	6
	900	P1713F Lost Array bitmasks combinatorics constructive algorithms dp math *2900	0 / 0	10
	894	P1714F Build a Tree and That Is It constructive algorithms implementation trees *1900	0 / 0	6
	892	P1715A Crossmarket constructive algorithms greedy math *800	0 / 0	3
	891	P1715B Beautiful Array constructive algorithms greedy math *1000	0 / 0	3
	887	P1715F Crop Squares constructive algorithms geometry interactive math *2700	0 / 0	10
	885	P1716B Permutation Chain constructive algorithms math *800	0 / 0	3
	879	P1717B Madoka and Underground Competitions constructive algorithms implementation *1100	0 / 0	3
	877	P1717D Madoka and The Corruption Scheme combinatorics constructive algorithms greedy math *1900	0 / 0	6
	875	P1717F Madoka and The First Session constructive algorithms flows graph matchings graphs implementation *2500	0 / 0	9
	869	P1718E Impressionism constructive algorithms graphs implementation math *3500	0 / 0	10
	866	P1719B Mathematical Circus constructive algorithms math *800	0 / 0	3
	859	P1720E Misha and Paintings constructive algorithms data structures greedy implementation math *2700	0 / 0	10
	853	P1721F Matching Reduction brute force constructive algorithms dfs and similar flows graph matchings graphs interactive *2800	0 / 0	10
	846	P1722G Even-Odd XOR bitmasks constructive algorithms greedy *1500	0 / 0	5
	838	P1725H Hot Black Hot White constructive algorithms math *1800	0 / 0	6
	831	P1726B Mainak and Interesting Sequence bitmasks constructive algorithms math *1100	0 / 0	3
	829	P1726D Edge Split brute force constructive algorithms dfs and similar dsu graphs probabilities trees *2000	0 / 0	7
	823	P1728B Best Permutation constructive algorithms greedy *800	0 / 0	3
	821	P1728D Letter Picking constructive algorithms dp games two pointers *1800	0 / 0	6

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