combinatorics - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	761	P1737E Ela Goes Hiking combinatorics dp math probabilities *2500	0 / 0	9
	754	P1738E Balance Addicts combinatorics dp math two pointers *2300	0 / 0	8
	746	P1739C Card Game combinatorics constructive algorithms dp games *1500	0 / 0	5
	732	P1740F Conditional Mix combinatorics dp math *2600	0 / 0	10
	704	P1743A Password brute force combinatorics implementation math *800	0 / 0	3
	691	P1743G Antifibonacci Cut bitmasks combinatorics constructive algorithms data structures dp hashing math *3000	0 / 0	10
	659	P1747E List Generation combinatorics dp math *2900	0 / 0	10
	651	P1748D ConstructOR bitmasks chinese remainder theorem combinatorics constructive algorithms math number theory *2100	0 / 0	7
	641	P1749D Counting Arrays combinatorics dp math number theory *1900	0 / 0	6
	629	P1750D Count GCD combinatorics math number theory *1800	0 / 0	6
	626	P1750F Majority combinatorics dp math strings *2700	0 / 0	10
	624	P1750G Doping combinatorics dp math *3300	0 / 0	10
	595	P1758E Tick, Tock combinatorics dfs and similar dsu graphs *2500	0 / 0	9
	560	P1761D Carry Bit combinatorics math *2100	0 / 0	7
	557	P1761F2 Anti-median (Hard Version) combinatorics dp math *3500	0 / 0	10
	553	P1762C Binary Strings are Fun combinatorics math *1400	0 / 0	4
	551	P1762E Tree Sum combinatorics math trees *2600	0 / 0	10
	539	P1763D Valid Bitonic Permutations combinatorics dp implementation math number theory *2200	0 / 0	8
	529	P1764D Doremy's Pegging Game combinatorics dp math *2000	0 / 0	7
	512	P1765C Card Guessing combinatorics dp probabilities *2600	0 / 0	10
	476	P1767D Playoff combinatorics constructive algorithms dp greedy math *1500	0 / 0	5
	468	P1768E Partial Sorting combinatorics math number theory *2300	0 / 0	8
	456	P1770E Koxia and Tree combinatorics dfs and similar dp dsu math probabilities trees *2400	0 / 0	9
	453	P1770F Koxia and Sequence bitmasks combinatorics dp math number theory *3100	0 / 0	10
	447	P1771A Hossam and Combinatorics combinatorics math sortings *900	0 / 0	3
	432	P1773D Dominoes combinatorics flows graph matchings greedy *2600	0 / 0	10
	429	P1773G Game of Questions bitmasks combinatorics dp fft math probabilities *2800	0 / 0	10
	407	P1774G Segment Covering brute force combinatorics constructive algorithms data structures dp trees *3200	0 / 0	10
	387	P1776G Another Wine Tasting Event combinatorics constructive algorithms math strings *2100	0 / 0	7
	373	P1777B Emordnilap combinatorics greedy math *900	1 / 1	3
	370	P1777D Score of a Tree bitmasks combinatorics dfs and similar dp math probabilities trees *1900	0 / 0	6
	361	P1778D Flexible String Revisit combinatorics dp math probabilities *2100	0 / 0	7
	339	P1780F Three Chairs bitmasks brute force combinatorics data structures dp number theory sortings *2300	0 / 0	8
	328	P1781F Bracket Insertion combinatorics dp math trees *2700	0 / 0	10
	310	P1784D Wooden Spoon combinatorics dp *2400	0 / 0	9
	309	P1784E Infinite Game brute force combinatorics dp games probabilities *3100	0 / 0	10
	299	P1787D Game on Axis combinatorics dfs and similar dsu graphs implementation *1900	0 / 0	6
	286	P1788D Moving Dots binary search brute force combinatorics math two pointers *2000	0 / 0	7
	279	P1789C Serval and Toxel's Arrays combinatorics dp implementation math *1500	0 / 0	5
	249	P1792F1 Graph Coloring (easy version) combinatorics dp graphs *2700	0 / 0	10
	247	P1792F2 Graph Coloring (hard version) brute force combinatorics divide and conquer dp fft graphs *2900	0 / 0	10
	233	P1794D Counting Factorizations combinatorics divide and conquer dp math number theory *1900	0 / 0	6
	225	P1795D Triangle Coloring combinatorics math *1600	1 / 1	5
	181	P1799G Count Voting combinatorics dp math *2600	0 / 0	10
	130	P1806D DSU Master combinatorics dp dsu math *2500	0 / 0	9
	104	P1808E1 Minibuses on Venus (easy version) combinatorics divide and conquer dp *2200	0 / 0	8
	102	P1808E2 Minibuses on Venus (medium version) combinatorics divide and conquer dp matrices *2500	0 / 0	9
	100	P1808E3 Minibuses on Venus (hard version) brute force combinatorics dp math *2800	0 / 0	10
	87	P1809G Prediction combinatorics dp math *2800	0 / 0	10
	70	P1810H Last Number combinatorics math *2900	0 / 0	10
	59	P1811G1 Vlad and the Nice Paths (easy version) combinatorics dp math *2100	0 / 0	7
	60	P1811G2 Vlad and the Nice Paths (hard version) binary search combinatorics data structures dp math two pointers *2200	0 / 0	8
	43	P1815D XOR Counting bitmasks combinatorics dp math *2600	0 / 0	10
	9800	P1817C Similar Polynomials combinatorics math *2400	0 / 0	9
	23	P1821A Matching combinatorics math	14 / 39	6
	13	P1821F Timber combinatorics dp fft math	1 / 11	10
	9793	P1824B1 LuoTianyi and the Floating Islands (Easy Version) combinatorics dp math probabilities trees	0 / 0	(None)
	9792	P1824B2 LuoTianyi and the Floating Islands (Hard Version) combinatorics dp math probabilities trees	0 / 0	(None)
	9823	P1827A Counting Orders combinatorics math sortings two pointers *1100	0 / 0	3
	9767	P1829H Don't Blame Me bitmasks combinatorics dp math	0 / 0	(None)
	9845	P1830C Hyperregular Bracket Strings combinatorics hashing math number theory sortings	0 / 0	(None)
	9805	P1832E Combinatorics Problem brute force combinatorics dp *2200	0 / 0	8
	9834	P1833F Ira and Flamenco combinatorics constructive algorithms data structures implementation math sortings two pointers *1700	0 / 0	5
	9935	P1835E Old Mobile combinatorics dp probabilities *3500	0 / 0	10
	9828	P1837E Playoff Fixing combinatorics trees	0 / 0	(None)
	9868	P1838E Count Supersequences combinatorics dp math *2500	0 / 0	9
	9860	P1840B Binary Cafe bitmasks combinatorics math *1100	0 / 0	3
	9859	P1840C Ski Resort combinatorics math two pointers *1000	0 / 0	3
	9925	P1842G Tenzing and Random Operations combinatorics dp math probabilities *2800	0 / 0	10
	9920	P1843C Sum in Binary Tree bitmasks combinatorics math trees *800	0 / 0	3
	9919	P1843D Apple Tree combinatorics dfs and similar dp math trees *1200	0 / 0	4
	9907	P1844H Multiple of Three Cycles combinatorics data structures dp dsu math *3400	0 / 0	10
	9888	P1847E Triangle Platinum? brute force combinatorics implementation interactive math probabilities *2900	0 / 0	10
	9881	P1848F Vika and Wiki binary search bitmasks combinatorics divide and conquer dp math *2400	0 / 0	9
	10000	P1854C Expected Destruction combinatorics dp math probabilities *2500	0 / 0	9
	9995	P1855B Longest Divisors Interval brute force combinatorics greedy math number theory *900	0 / 0	3
	9982	P1857G Counting Graphs combinatorics divide and conquer dsu graphs greedy sortings trees *2000	0 / 0	7
	10043	P1861E Non-Intersecting Subpermutations combinatorics dp implementation math	3 / 8	10
	10038	P1862D Ice Cream Balls binary search combinatorics constructive algorithms math	0 / 0	(None)
	10028	P1863G Swaps combinatorics dp graphs math	0 / 0	(None)
	10019	P1864G Magic Square combinatorics constructive algorithms implementation	0 / 0	(None)
	10015	P1866B Battling with Numbers combinatorics math number theory	0 / 0	(None)
	10009	P1866H Happy Sets combinatorics	0 / 0	(None)
	10004	P1866M Mighty Rock Tower combinatorics dp math probabilities	0 / 0	(None)
	10060	P1868C Travel Plan combinatorics dp implementation math trees	0 / 0	(None)
	10103	P1876B Effects of Anti Pimples combinatorics number theory sortings	0 / 0	(None)
	10101	P1876D Lexichromatography combinatorics dfs and similar dsu graphs two pointers	0 / 0	(None)
	10086	P1879C Make it Alternating combinatorics dp greedy *1300	0 / 0	4
	10085	P1879D Sum of XOR Functions bitmasks combinatorics divide and conquer dp math *1700	0 / 0	5
	10073	P1886D Monocarp and the Set brute force combinatorics math	0 / 0	(None)
	10180	P1893E Cacti Symphony combinatorics dfs and similar dp graphs *3500	0 / 0	10
	10172	P1895F Fancy Arrays combinatorics dp math matrices *2600	0 / 0	10
	10311	P1909F1 Small Permutation Problem (Easy Version) brute force combinatorics dp math *2200	0 / 0	8
	10310	P1909F2 Small Permutation Problem (Hard Version) combinatorics dp math *2500	0 / 0	9
	10307	P1909I Short Permutation Problem combinatorics dp fft math *3500	0 / 0	10
	10298	P1910I Inverse Problem special problem combinatorics dp 2700	0 / 0	10
	10295	P1912B Blueprint for Seating combinatorics divide and conquer math *2000	0 / 0	7
	10241	P1912K Kim's Quest bitmasks combinatorics dp *1800	0 / 0	6
	10226	P1914G1 Light Bulbs (Easy Version) brute force combinatorics dfs and similar dp dsu graphs math trees *2100	0 / 0	7
	10225	P1914G2 Light Bulbs (Hard Version) combinatorics data structures dfs and similar dp graphs hashing *2300	0 / 0	8

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