Problemset - Codeforces

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Codeforces Round 946 (Div. 3)
3 days
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Problems

#	Name
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x7711
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x14552
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x9208
1945D	Seraphim the Owl dp, greedy	1300	x12260
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x8226
1937B	Binary Path dp, greedy, implementation	1300	x13178
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x18408
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10140
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12410
1919C	Grouping Increases data structures, dp, greedy	1400	x16892
1900C	Anji's Binary Tree dfs and similar, dp, trees	1300	x10485
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x10137
1881E	Block Sequence dp	1500	x11803
1879C	Make it Alternating combinatorics, dp, greedy	1300	x15004
1875D	Jellyfish and Mex dp	1600	x7622
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x12083
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x10763
1860C	Game on Permutation data structures, dp, games, greedy	1400	x12475
1858B	The Walkway brute force, dp, greedy, math, number theory	1500	x10675
1856C	To Become Max binary search, brute force, data structures, dp	1600	x11117
1851E	Nastya and Potions dfs and similar, dp, graphs, sortings	1500	x9480
1847C	Vampiric Powers, anyone? bitmasks, brute force, dp, greedy	1400	x12250
1845C	Strong Password binary search, dp, greedy, strings	1400	x13367
1844C	Particles dp, greedy, implementation, math	1300	x14876
1842C	Tenzing and Balls dp	1500	x11736
1830A	Copil Copac Draws Trees dfs and similar, dp, graphs, trees	1400	x12499
1829G	Hits Different data structures, dp, implementation, math	1600	x9448
1811E	Living Sequence binary search, dp, math, number theory	1500	x11598
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8107
1787C	Remove the Bracket dp, greedy, math	1600	x6734
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x11582
1771B	Hossam and Friends binary search, constructive algorithms, dp, two pointers	1400	x12909
1769C2	Подкрутка II *special problem, dp	1300	x916
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x9450
1766C	Hamiltonian Wall dp, implementation	1300	x13135
1759E	The Humanoid brute force, dp, sortings	1500	x10021
1753A2	Make Nonzero Sum (hard version) constructive algorithms, dp, greedy	1500	x9816
1753A1	Make Nonzero Sum (easy version) constructive algorithms, dp, greedy	1300	x14333
1748C	Zero-Sum Prefixes brute force, data structures, dp, greedy, implementation	1600	x10494
1741E	Sending a Sequence Over the Network dp	1600	x10893
1739C	Card Game combinatorics, constructive algorithms, dp, games	1500	x8727
1738C	Even Number Addicts dp, games, greedy, math	1500	x10595
1722E	Counting Rectangles brute force, data structures, dp, implementation	1600	x10104
1714D	Color with Occurrences brute force, data structures, dp, greedy, strings	1600	x8734
1706C	Qpwoeirut And The City dp, flows, greedy, implementation	1400	x14453
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x10053
1703F	Yet Another Problem About Pairs Satisfying an Inequality binary search, data structures, dp, greedy, sortings	1300	x18293
1692G	2^Sort data structures, dp, sortings, two pointers	1400	x16028
1689C	Infected Tree dfs and similar, dp, trees	1600	x10519
1677A	Tokitsukaze and Strange Inequality brute force, data structures, dp	1600	x8122
1676G	White-Black Balanced Subtrees dfs and similar, dp, graphs, trees	1300	x14268
1673C	Palindrome Basis brute force, dp, math, number theory	1500	x11784
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x17021
1660C	Get an Even String dp, greedy, strings	1300	x18806
1659C	Line Empire binary search, brute force, dp, greedy, implementation, math	1500	x9729
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x13240
1644C	Increase Subarray Sums brute force, dp, greedy, implementation	1400	x13389
1633D	Make Them Equal dp, greedy	1600	x13067
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x12270
1618D	Array and Operations dp, greedy, math	1300	x18319
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x9929
1609C	Complex Market Analysis binary search, dp, implementation, number theory, schedules, two pointers	1400	x9503
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x11856
1555D	Say No to Palindromes brute force, constructive algorithms, dp, strings	1600	x11771
1555C	Coin Rows brute force, constructive algorithms, dp, implementation	1300	x20921
1553D	Backspace dp, greedy, strings, two pointers	1500	x13357
1553B	Reverse String brute force, dp, hashing, implementation, strings	1300	x13837
1547E	Air Conditioners data structures, dp, implementation, shortest paths, sortings, two pointers	1500	x13871
1538F	Interesting Function binary search, dp, math, number theory	1500	x18393
1537E1	Erase and Extend (Easy Version) binary search, brute force, dp, greedy, hashing, implementation, string suffix structures, strings, two pointers	1600	x12290
1536C	Diluc and Kaeya data structures, dp, hashing, number theory	1500	x13583
1535C	Unstable String binary search, dp, greedy, implementation, strings, two pointers	1400	x16114
1534C	Little Alawn's Puzzle combinatorics, dp, dsu, graphs, math	1300	x12512
1528A	Parsa's Humongous Tree dfs and similar, divide and conquer, dp, greedy, trees	1600	x13914
1526C1	Potions (Easy Version) brute force, data structures, dp, greedy	1500	x21266
1526B	I Hate 1111 dp, math, number theory	1400	x28819
1519D	Maximum Sum of Products brute force, dp, implementation, math, two pointers	1600	x14613
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x18145
1513C	Add One dp, matrices	1600	x13257
1498C	Planar Reflections brute force, data structures, dp	1600	x9200
1492C	Maximum width binary search, data structures, dp, greedy, two pointers	1500	x15600
1476C	Longest Simple Cycle dp, graphs, greedy	1600	x11075
1470A	Strange Birthday Party binary search, dp, greedy, sortings, two pointers	1300	x21299
1469C	Building a Fence dp, greedy, implementation, two pointers	1600	x10506
1466C	Canine poetry dp, greedy, strings	1300	x17326
1461C	Random Events dp, math, probabilities	1500	x10862
1461B	Find the Spruce brute force, dp, implementation	1400	x12363
1459B	Move and Turn dp, math	1300	x13947
1455D	Sequence and Swaps dp, greedy, sortings	1600	x12000
1452D	Radio Towers combinatorics, dp, math	1600	x7774
1451C	String Equality dp, greedy, hashing, implementation, strings	1400	x15218
1443B	Saving the City dp, greedy, math, sortings	1300	x15507
1420C1	Pokémon Army (easy version) constructive algorithms, dp, greedy	1300	x17037
1418C	Mortal Kombat Tower dp, graphs, greedy, shortest paths	1500	x18280
1415C	Bouncing Ball brute force, dp, implementation	1400	x10665
1408C	Discrete Acceleration binary search, dp, implementation, math, two pointers	1500	x8629
1398C	Good Subarrays data structures, dp, math	1600	x24260
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x13535
1391C	Cyclic Permutations combinatorics, dp, graphs, math	1500	x14565
1389C	Good String brute force, dp, greedy, two pointers	1500	x18399

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