Problem Set - bitmasks - SAST OJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	1088	P1705F Mark and the Online Exam bitmasks constructive algorithms interactive probabilities *2900	0 / 0	10
	1076	P1707F Bugaboo bitmasks constructive algorithms dp number theory *3500	0 / 0	10
	1069	P1709E XOR Tree bitmasks data structures dfs and similar dsu greedy trees *2400	0 / 0	9
	1068	P1709F Multiset of Strings bitmasks brute force dp fft flows graphs math meet-in-the-middle trees *2500	0 / 0	9
	1065	P1710C XOR Triangle bitmasks brute force constructive algorithms dp greedy math *2500	0 / 0	9
	1048	P1713F Lost Array bitmasks combinatorics constructive algorithms dp math *2900	0 / 0	10
	1037	P1715D 2+ doors 2-sat bitmasks graphs greedy *1900	0 / 0	6
	1030	P1716E Swap and Maximum Block bitmasks data structures dfs and similar divide and conquer dp *2500	0 / 0	9
	1009	P1720D1 Xor-Subsequence (easy version) bitmasks brute force dp strings trees two pointers *1800	0 / 0	6
	1008	P1720D2 Xor-Subsequence (hard version) bitmasks data structures dp strings trees *2400	0 / 0	9
	1003	P1721D Maximum AND bitmasks dfs and similar divide and conquer greedy sortings *1800	0 / 0	6
	994	P1722G Even-Odd XOR bitmasks constructive algorithms greedy *1500	0 / 0	5
	990	P1725D Deducing Sortability binary search bitmasks math *2900	0 / 0	10
	988	P1725F Field Photography bitmasks data structures sortings *2100	0 / 0	7
	979	P1726B Mainak and Interesting Sequence bitmasks constructive algorithms math *1100	0 / 0	3
	966	P1728G Illumination binary search bitmasks brute force combinatorics dp math two pointers *2700	0 / 0	10
	953	P1730F Almost Sorted bitmasks data structures dp *2700	0 / 0	10
	950	P1731C Even Subarrays bitmasks brute force hashing math number theory *1700	0 / 0	5
	944	P1732C1 Sheikh (Easy version) binary search bitmasks greedy two pointers *1800	0 / 0	6
	943	P1732C2 Sheikh (Hard Version) binary search bitmasks brute force greedy implementation two pointers *2100	0 / 0	7
	928	P1734F Zeros and Ones bitmasks divide and conquer dp math *2500	0 / 0	9
	896	P1739E Cleaning Robot bitmasks dp *2400	0 / 0	9
	895	P1739F Keyboard Design bitmasks data structures dp string suffix structures strings *2600	0 / 0	10
	879	P1741G Kirill and Company bitmasks brute force dfs and similar dp flows graphs shortest paths *2200	0 / 0	8
	872	P1742G Orray bitmasks brute force greedy math sortings *1500	0 / 0	5
	865	P1743G Antifibonacci Cut bitmasks combinatorics constructive algorithms data structures dp hashing math *3000	0 / 0	10
	846	P1747D Yet Another Problem binary search bitmasks constructive algorithms data structures *1900	0 / 0	6
	841	P1748D ConstructOR bitmasks chinese remainder theorem combinatorics constructive algorithms math number theory *2100	0 / 0	7
	839	P1748F Circular Xor Reversal bitmasks constructive algorithms *3000	0 / 0	10
	796	P1760G SlavicG's Favorite Problem bitmasks dfs and similar graphs *1700	0 / 0	5
	780	P1763A Absolute Maximization bitmasks constructive algorithms greedy math *800	0 / 0	3
	764	P1765A Access Levels bitmasks dsu flows graph matchings *2400	0 / 0	9
	740	P1767E Algebra Flash bitmasks brute force dp graphs math meet-in-the-middle trees *2500	0 / 0	9
	727	P1770F Koxia and Sequence bitmasks combinatorics dp math number theory *3100	0 / 0	10
	719	P1771F Hossam and Range Minimum Query binary search bitmasks data structures hashing probabilities strings trees *2500	0 / 0	9
	712	P1773G Game of Questions bitmasks combinatorics dp fft math probabilities *2800	0 / 0	10
	695	P1775B Gardener and the Array bitmasks constructive algorithms *1300	0 / 0	4
	694	P1775C Interesting Sequence bitmasks math *1600	0 / 0	5
	673	P1777D Score of a Tree bitmasks combinatorics dfs and similar dp math probabilities trees *1900	0 / 0	6
	671	P1777F Comfortably Numb bitmasks data structures divide and conquer strings trees *2400	0 / 0	9
	668	P1778C Flexible String bitmasks brute force strings *1600	0 / 0	5
	666	P1778E The Tree Has Fallen! bitmasks dfs and similar math trees *2500	0 / 0	9
	659	P1779F Xorcerer's Stones bitmasks constructive algorithms dp trees *2500	0 / 0	9
	654	P1780D Bit Guessing Game binary search bitmasks constructive algorithms interactive *1800	0 / 0	6
	652	P1780F Three Chairs bitmasks brute force combinatorics data structures dp number theory sortings *2300	0 / 0	8
	621	P1787E The Harmonization of XOR bitmasks constructive algorithms greedy math *2100	0 / 0	7
	611	P1788F XOR, Tree, and Queries bitmasks constructive algorithms dfs and similar dsu graphs greedy implementation trees *2500	0 / 0	9
	607	P1789D Serval and Shift-Shift-Shift bitmasks brute force constructive algorithms implementation *2200	0 / 0	8
	605	P1789F Serval and Brain Power bitmasks brute force dp greedy implementation strings *2700	0 / 0	10
	600	P1790E Vlad and a Pair of Numbers bitmasks constructive algorithms *1400	0 / 0	4
	586	P1792D Fixed Prefix Permutations binary search bitmasks data structures hashing math sortings *1700	0 / 0	5
	565	P1795G Removal Sequences bitmasks dfs and similar graphs *2700	0 / 0	10
	538	P1799H Tree Cutting bitmasks dfs and similar dp *3200	0 / 0	10
	530	P1800F Dasha and Nightmares bitmasks hashing meet-in-the-middle strings *1900	0 / 0	6
	528	P1801A The Very Beautiful Blanket bitmasks constructive algorithms *1600	0 / 0	5
	515	P1804E Routing bitmasks brute force dfs and similar dp graphs *2400	0 / 0	9
	512	P1804H Code Lock bitmasks dp *3300	0 / 0	10
	511	P1805A We Need the Zero bitmasks brute force *800	0 / 0	3
	490	P1807G2 Subsequence Addition (Hard Version) bitmasks dp greedy implementation sortings *1100	0 / 0	3
	440	P1815D XOR Counting bitmasks combinatorics dp math *2600	0 / 0	10
	387	P1826E Walk the Runway bitmasks brute force data structures dp graphs implementation sortings *2400	0 / 0	9
	374	P1829C Mr bitmasks greedy implementation *800	0 / 0	3
	369	P1829H Don't Blame Me bitmasks combinatorics dp math *1700	0 / 0	5
	338	P1835C Twin Clusters bitmasks brute force constructive algorithms math probabilities *2600	0 / 0	10
	335	P1835F Good Graph bitmasks dfs and similar graph matchings graphs implementation *3500	0 / 0	10
	314	P1840B Binary Cafe bitmasks combinatorics math *1100	0 / 0	3
	300	P1842B Tenzing and Books bitmasks greedy math *1100	0 / 0	3
	294	P1842H Tenzing and Random Real Numbers bitmasks dp graphs math probabilities *3000	0 / 0	10
	290	P1843C Sum in Binary Tree bitmasks combinatorics math trees *800	0 / 0	3
	278	P1844G Tree Weights bitmasks constructive algorithms data structures dfs and similar implementation math matrices number theory trees *3000	0 / 0	10
	263	P1846G Rudolf and CodeVid-23 bitmasks dp graphs greedy shortest paths *1900	0 / 0	6
	261	P1847B Hamon Odyssey bitmasks greedy two pointers *1000	0 / 0	3
	260	P1847C Vampiric Powers, anyone? bitmasks brute force dp greedy *1400	0 / 0	4
	257	P1847F The Boss's Identity binary search bitmasks data structures dfs and similar greedy math sortings *2500	0 / 0	9
	251	P1848F Vika and Wiki binary search bitmasks combinatorics divide and conquer dp math *2400	0 / 0	9
	245	P1849F XOR Partition binary search bitmasks data structures divide and conquer greedy trees *2700	0 / 0	10
	231	P1851F Lisa and the Martians bitmasks greedy math strings trees *1800	0 / 0	6
	219	P1854B Earn or Unlock bitmasks brute force dp *2200	0 / 0	8
	207	P1856E2 PermuTree (hard version) bitmasks dfs and similar dp fft greedy implementation math trees *2700	0 / 0	10
	176	P1861F Four Suits binary search bitmasks flows greedy *3200	0 / 0	10
	170	P1862F Magic Will Save the World binary search bitmasks brute force dp *1800	0 / 0	6
	163	P1863F Divide, XOR, and Conquer bitmasks dp math *2600	0 / 0	10
	157	P1864C Divisor Chain bitmasks constructive algorithms math number theory *1300	0 / 0	4
	155	P1864E Guess Game bitmasks data structures games math probabilities sortings strings trees *2100	0 / 0	7
	136	P1867B XOR Palindromes bitmasks constructive algorithms strings *1100	0 / 0	3
	129	P1868B1 Candy Party (Easy Version) bitmasks constructive algorithms graphs greedy implementation math *1700	0 / 0	5
	128	P1868B2 Candy Party (Hard Version) bitmasks constructive algorithms dp greedy implementation math *2100	0 / 0	7
	120	P1870B Friendly Arrays bitmasks greedy math *1200	0 / 0	4
	117	P1870E Another MEX Problem bitmasks brute force dp shortest paths *2300	0 / 0	8
	109	P1872E Data Structures Fan binary search bitmasks data structures dp *1500	0 / 0	5
	97	P1874B Jellyfish and Math bitmasks brute force dfs and similar dp graphs shortest paths *2400	0 / 0	9
	90	P1875C Jellyfish and Green Apple bitmasks greedy math number theory *1400	0 / 0	4
	75	P1878E Iva & Pav binary search bitmasks data structures greedy *1400	0 / 0	4
	73	P1878G wxhtzdy ORO Tree binary search bitmasks brute force data structures dfs and similar implementation trees *2300	0 / 0	8
	69	P1879D Sum of XOR Functions bitmasks combinatorics divide and conquer dp math *1700	0 / 0	5
	58	P1882B Sets and Union bitmasks brute force constructive algorithms greedy *1300	0 / 0	4
	56	P1882D Tree XOR bitmasks dfs and similar dp greedy trees *1900	0 / 0	6
	49	P1883E Look Back bitmasks greedy *1700	0 / 0	5
	36	P1886E I Wanna be the Team Leader bitmasks constructive algorithms dp greedy math sortings two pointers *2400	0 / 0	9
	4	P1895D XOR Construction bitmasks constructive algorithms data structures math string suffix structures trees *1900	0 / 0	6

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