constructive algorithms - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	304	P1787A Exponential Equation constructive algorithms math *800	0 / 0	3
	298	P1787E The Harmonization of XOR bitmasks constructive algorithms greedy math *2100	0 / 0	7
	297	P1787F Inverse Transformation constructive algorithms implementation math *2500	0 / 0	9
	289	P1788B Sum of Two Numbers constructive algorithms greedy implementation math probabilities *1100	0 / 0	3
	288	P1788C Matching Numbers constructive algorithms greedy math *1300	0 / 0	4
	283	P1788F XOR, Tree, and Queries bitmasks constructive algorithms dfs and similar dsu graphs greedy implementation trees *2500	0 / 0	9
	278	P1789D Serval and Shift-Shift-Shift bitmasks brute force constructive algorithms implementation *2200	0 / 0	8
	270	P1790E Vlad and a Pair of Numbers bitmasks constructive algorithms *1400	0 / 0	4
	269	P1790G Tokens on Graph constructive algorithms dfs and similar graphs shortest paths *2300	0 / 0	8
	245	P1793B Fedya and Array constructive algorithms math *1100	0 / 0	3
	244	P1793C Dora and Search constructive algorithms data structures two pointers *1200	0 / 0	4
	236	P1794B Not Dividing constructive algorithms greedy math *900	0 / 0	3
	222	P1795F Blocking Chips binary search constructive algorithms dfs and similar greedy trees *2400	0 / 0	9
	211	P1797A Li Hua and Maze constructive algorithms flows graphs greedy implementation *800	0 / 0	3
	209	P1797B Li Hua and Pattern constructive algorithms greedy *1100	0 / 0	3
	207	P1797C Li Hua and Chess constructive algorithms greedy interactive *1600	0 / 0	5
	196	P1798D Shocking Arrangement constructive algorithms greedy math *1600	0 / 0	5
	190	P1799B Equalize by Divide brute force constructive algorithms greedy math *1200	0 / 0	4
	184	P1799E City Union constructive algorithms dfs and similar dsu geometry greedy implementation math *2300	0 / 0	8
	171	P1800E1 Unforgivable Curse (easy version) brute force constructive algorithms dsu graphs greedy strings *1400	0 / 0	4
	169	P1800E2 Unforgivable Curse (hard version) brute force constructive algorithms dfs and similar dsu graphs greedy strings *1500	0 / 0	5
	165	P1801A The Very Beautiful Blanket bitmasks constructive algorithms *1600	0 / 0	5
	133	P1806B Mex Master constructive algorithms greedy *900	2 / 2	3
	131	P1806C Sequence Master brute force constructive algorithms math *1600	1 / 1	5
	94	P1809C Sum on Subarrays constructive algorithms greedy math *1500	0 / 0	5
	92	P1809D Binary String Sorting constructive algorithms greedy *1800	0 / 0	6
	83	P1810B Candies constructive algorithms math number theory *800	0 / 0	3
	65	P1811C Restore the Array constructive algorithms greedy *1100	0 / 0	3
	63	P1811D Umka and a Long Flight constructive algorithms implementation math *1600	0 / 0	5
	54	P1814C Search in Parallel constructive algorithms greedy sortings *1500	0 / 0	5
	48	P1815B Sum Graph brute force constructive algorithms graphs implementation interactive shortest paths trees *2000	0 / 0	7
	45	P1815C Between constructive algorithms dfs and similar graphs greedy *2200	0 / 0	8
	41	P1815F OH NO1 (-2-3-4) constructive algorithms graphs math *3500	0 / 0	10
	40	P1816A Ian Visits Mary constructive algorithms geometry number theory *800	0 / 0	3
	38	P1816B Grid Reconstruction constructive algorithms greedy *1000	0 / 0	3
	9801	P1817B Fish Graph brute force constructive algorithms dfs and similar graphs *1900	0 / 0	6
	9799	P1817D Toy Machine constructive algorithms games implementation *2700	0 / 0	10
	9795	P1818B Indivisible constructive algorithms *900	0 / 0	3
	33	P1819C The Fox and the Complete Tree Traversal constructive algorithms dp implementation math trees *2400	0 / 0	9
	9	P1822D Super-Permutation constructive algorithms math	0 / 0	(None)
	3641	P1823A A-characteristic constructive algorithms math	0 / 0	(None)
	3635	P1823D Unique Palindromes constructive algorithms strings	0 / 0	(None)
	9818	P1827E Bus Routes binary search constructive algorithms dfs and similar greedy trees *3400	0 / 0	10
	9817	P1827F Copium Permutation constructive algorithms data structures greedy *3500	0 / 0	10
	9816	P1828A Divisible Array constructive algorithms math *800	0 / 0	3
	9841	P1831A Twin Permutations constructive algorithms	0 / 0	(None)
	9840	P1831B Array merging constructive algorithms greedy	0 / 0	(None)
	9808	P1832D2 Red-Blue Operations (Hard Version) binary search constructive algorithms greedy implementation math *2400	0 / 0	9
	9836	P1833D Flipper brute force constructive algorithms greedy *1400	0 / 0	4
	9834	P1833F Ira and Flamenco combinatorics constructive algorithms data structures implementation math sortings two pointers *1700	0 / 0	5
	9833	P1833G Ksyusha and Chinchilla constructive algorithms dfs and similar dp dsu greedy implementation trees *1800	0 / 0	6
	9937	P1835C Twin Clusters bitmasks brute force constructive algorithms math probabilities *2600	0 / 0	10
	9832	P1837A Grasshopper on a Line constructive algorithms math	0 / 0	(None)
	9830	P1837C Best Binary String constructive algorithms greedy	0 / 0	(None)
	9829	P1837D Bracket Coloring constructive algorithms greedy	0 / 0	(None)
	9872	P1838A Blackboard List constructive algorithms math *800	0 / 0	3
	9871	P1838B Minimize Permutation Subarrays constructive algorithms math *1100	0 / 0	3
	9870	P1838C No Prime Differences constructive algorithms math number theory *1400	0 / 0	4
	9867	P1838F Stuck Conveyor binary search constructive algorithms interactive *3000	0 / 0	10
	9864	P1839C Insert Zero and Invert Prefix constructive algorithms *1300	0 / 0	4
	9862	P1839E Decreasing Game constructive algorithms dfs and similar dp greedy interactive *2400	0 / 0	9
	9855	P1840G1 In Search of Truth (Easy Version) constructive algorithms interactive math meet-in-the-middle probabilities *2200	0 / 0	8
	9854	P1840G2 In Search of Truth (Hard Version) constructive algorithms interactive math meet-in-the-middle probabilities *2500	0 / 0	9
	9853	P1841A Game with Board constructive algorithms games	1 / 10	10
	9928	P1842D Tenzing and His Animal Friends constructive algorithms graphs greedy *1900	0 / 0	6
	9915	P1844A Subtraction Game constructive algorithms games *800	0 / 0	3
	9914	P1844B Permutations & Primes constructive algorithms math *1000	0 / 0	3
	9912	P1844D Row Major constructive algorithms greedy math number theory strings *1400	0 / 0	4
	9911	P1844E Great Grids 2-sat constructive algorithms dfs and similar dsu graphs *2400	0 / 0	9
	9910	P1844F1 Min Cost Permutation (Easy Version) brute force constructive algorithms greedy math *2600	0 / 0	10
	9909	P1844F2 Min Cost Permutation (Hard Version) binary search constructive algorithms data structures greedy math sortings *2800	0 / 0	10
	9908	P1844G Tree Weights bitmasks constructive algorithms data structures dfs and similar implementation math matrices number theory trees *3000	0 / 0	10
	9906	P1845A Forbidden Integer constructive algorithms implementation math number theory *800	0 / 0	3
	9898	P1846C Rudolf and the Another Competition constructive algorithms data structures dp greedy sortings *1200	0 / 0	4
	9897	P1846D Rudolph and Christmas Tree constructive algorithms geometry math *1200	0 / 0	4
	9894	P1846F Rudolph and Mimic constructive algorithms implementation interactive *1800	0 / 0	6
	9959	P1849D Array Painting brute force constructive algorithms dp greedy implementation two pointers	0 / 0	(None)
	9956	P1851A Escalator Conversations brute force constructive algorithms math	0 / 0	(None)
	9948	P1852B Imbalanced Arrays constructive algorithms graphs greedy math sortings two pointers *1800	0 / 0	6
	9946	P1852D Miriany and Matchstick constructive algorithms dp greedy *2800	0 / 0	10
	9945	P1852E Rivalries constructive algorithms data structures greedy *3400	0 / 0	10
	10003	P1854A1 Dual (Easy Version) constructive algorithms math *1400	0 / 0	4
	10002	P1854A2 Dual (Hard Version) constructive algorithms math *1900	0 / 0	6
	9998	P1854E Game Bundles brute force constructive algorithms dp greedy math *3000	0 / 0	10
	9979	P1858C Yet Another Permutation Problem constructive algorithms greedy math number theory *1000	0 / 0	3
	9975	P1859A United We Stand constructive algorithms math number theory *800	0 / 0	3
	9974	P1859B Olya and Game with Arrays constructive algorithms greedy math sortings *1000	0 / 0	3
	9969	P1860A Not a Substring constructive algorithms strings	0 / 0	(None)
	10047	P1861A Prime Deletion constructive algorithms math	19 / 44	5
	10046	P1861B Two Binary Strings constructive algorithms dp greedy	17 / 41	5
	10040	P1862B Sequence Game constructive algorithms	0 / 0	(None)
	10038	P1862D Ice Cream Balls binary search combinatorics constructive algorithms math	0 / 0	(None)
	10037	P1862E Kolya and Movie Theatre constructive algorithms data structures greedy	0 / 0	(None)
	10031	P1863D Two-Colored Dominoes constructive algorithms greedy	0 / 0	(None)
	10026	P1863I Redundant Routes constructive algorithms dp trees	0 / 0	(None)
	10025	P1864A Increasing and Decreasing constructive algorithms greedy implementation math	0 / 0	(None)
	10024	P1864B Swap and Reverse constructive algorithms greedy sortings strings	0 / 0	(None)
	10023	P1864C Divisor Chain bitmasks constructive algorithms math number theory	0 / 0	(None)
	10022	P1864D Matrix Cascade brute force constructive algorithms data structures dp greedy math	0 / 0	(None)
	10019	P1864G Magic Square combinatorics constructive algorithms implementation	0 / 0	(None)

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