Problemset - Codeforces

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Codeforces Round 987 (Div. 2)
08:09:27
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Problems

#	Name
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x7072
1858B	The Walkway brute force, dp, greedy, math, number theory	1500	x11417
1857F	Sum and Product binary search, data structures, math	1600	x11763
1857E	Power of Points math, sortings	1500	x12626
1857D	Strong Vertices math, sortings, trees	1300	x19921
1856E1	PermuTree (easy version) dfs and similar, dp, trees	1800	x5405
1856C	To Become Max binary search, brute force, data structures, dp	1600	x12598
1854A2	Dual (Hard Version) constructive algorithms, math	1900	x7068
1854A1	Dual (Easy Version) constructive algorithms, math	1400	x14261
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x4534
1852A	Ntarsis' Set binary search, math, number theory	1800	x8145
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x5941
1851E	Nastya and Potions dfs and similar, dp, graphs, sortings	1500	x10497
1851D	Prefix Permutation Sums implementation, math	1300	x15379
1850H	The Third Letter dfs and similar, dsu, graphs, greedy, implementation	1700	x8333
1850G	The Morning Star combinatorics, data structures, geometry, implementation, math, sortings	1500	x12649
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x19544
1849D	Array Painting constructive algorithms, greedy, two pointers	1700	x8650
1849C	Binary String Copying binary search, brute force, data structures, hashing, strings	1600	x10672
1848C	Vika and Price Tags math, number theory	1800	x6365
1847D	Professor Higashikata data structures, dsu, greedy, implementation, strings	1900	x3827
1847C	Vampiric Powers, anyone? bitmasks, brute force, dp, greedy	1400	x12998
1846G	Rudolf and CodeVid-23 bitmasks, dp, graphs, greedy, shortest paths	1900	x4460
1846F	Rudolph and Mimic constructive algorithms, implementation, interactive	1800	x3160
1846E2	Rudolf and Snowflakes (hard version) binary search, brute force, implementation, math	1800	x7113
1846E1	Rudolf and Snowflakes (simple version) brute force, implementation, math	1300	x17217
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x7919
1845C	Strong Password binary search, dp, greedy, strings	1400	x14437
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x12391
1844C	Particles dp, greedy, implementation, math	1300	x15815
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x5380
1843E	Tracking Segments binary search, brute force, data structures, two pointers	1600	x12584
1842D	Tenzing and His Animal Friends constructive algorithms, graphs, greedy	1900	x4125
1842C	Tenzing and Balls dp	1500	x13030
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7906
1840E	Character Blocking data structures, hashing, implementation	1600	x8138
1840D	Wooden Toy Festival binary search, greedy, sortings	1400	x13902
1839C	Insert Zero and Invert Prefix constructive algorithms	1300	x12085
1838C	No Prime Differences constructive algorithms, math, number theory	1400	x14683
1837D	Bracket Coloring constructive algorithms, greedy	1400	x15101
1835A	k-th equality brute force, implementation, math	1700	x7904
1834D	Survey in Class brute force, data structures, greedy, implementation, sortings	1900	x4736
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x5449
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x7507
1833E	Round Dance dfs and similar, dsu, graphs, shortest paths	1600	x12054
1833D	Flipper brute force, constructive algorithms, greedy	1400	x13450
1830A	Copil Copac Draws Trees dfs and similar, dp, graphs, trees	1400	x13815
1829H	Don't Blame Me bitmasks, combinatorics, dp, math	1700	x7893
1829G	Hits Different data structures, dp, implementation, math	1600	x10648
1829F	Forever Winter dfs and similar, graphs, math	1300	x17934
1826D	Running Miles brute force, dp, greedy	1700	x10119
1826C	Dreaming of Freedom greedy, math, number theory	1300	x13737
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x4669
1824A	LuoTianyi and the Show greedy, implementation	1400	x11391
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3871
1823C	Strongly Composite greedy, math, number theory	1300	x12410
1822G1	Magic Triples (Easy Version) brute force, data structures, math, number theory	1700	x7159
1822F	Gardening Friends brute force, dfs and similar, dp, graphs, trees	1700	x6262
1822E	Making Anti-Palindromes greedy, math, strings	1600	x10586
1821D	Black Cells binary search, brute force, greedy, math	1900	x5024
1821C	Tear It Apart brute force, implementation, math, strings	1300	x14447
1819B	The Butcher geometry, greedy, implementation, sortings, two pointers	1900	x3625
1819A	Constructive Problem brute force, greedy	1300	x12851
1817B	Fish Graph brute force, constructive algorithms, dfs and similar, graphs	1900	x4182
1817A	Almost Increasing Subsequence binary search, data structures, greedy	1500	x11144
1815A	Ian and Array Sorting greedy, math	1300	x14265
1814C	Search in Parallel constructive algorithms, greedy, sortings	1500	x10955
1814B	Long Legs brute force, math	1700	x10131
1811E	Living Sequence binary search, dp, math, number theory	1500	x12499
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x7591
1810D	Climbing the Tree binary search, math	1700	x7500
1810C	Make It Permutation brute force, greedy, sortings	1300	x14677
1809D	Binary String Sorting constructive algorithms, greedy	1800	x6387
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x12949
1808C	Unlucky Numbers brute force, dp, greedy, implementation	1900	x3851
1807F	Bouncy Ball brute force, dfs and similar, implementation	1700	x6374
1807E	Interview binary search, implementation, interactive	1300	x13197
1806C	Sequence Master brute force, constructive algorithms, math	1600	x7685
1805D	A Wide, Wide Graph dfs and similar, dp, graphs, greedy, trees	1800	x6735
1805C	Place for a Selfie binary search, data structures, geometry, math	1400	x12681
1804C	Pull Your Luck brute force, greedy, math, number theory	1500	x12256
1801C	Music Festival binary search, data structures, dp, greedy, sortings	1900	x3503
1801B	Buying gifts data structures, greedy, sortings	1800	x6369
1801A	The Very Beautiful Blanket bitmasks, constructive algorithms	1600	x8652
1800F	Dasha and Nightmares bitmasks, hashing, meet-in-the-middle, strings	1900	x3961
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x12995
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12981
1799D1	Hot Start Up (easy version) dp	1900	x4581
1799C	Double Lexicographically Minimum greedy, strings	1700	x5923
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x10165
1798C	Candy Store greedy, math, number theory	1700	x8278
1797D	Li Hua and Tree brute force, data structures, dfs and similar, dp, implementation, trees	1900	x4027
1797C	Li Hua and Chess constructive algorithms, greedy, interactive	1600	x7754
1796C	Maximum Set binary search, math	1600	x10550
1795D	Triangle Coloring combinatorics, math	1600	x9299
1795C	Tea Tasting binary search, data structures, implementation	1500	x12754
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3622
1794C	Scoring Subsequences binary search, greedy, math, two pointers	1300	x14101
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x6265
1792D	Fixed Prefix Permutations binary search, bitmasks, data structures, hashing, math, sortings	1700	x6325