Problemset - Codeforces

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Codeforces Round 965 (Div. 2)
4 days
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Problems

#	Name
1837A	Grasshopper on a Line constructive algorithms, math	800	x31113
1836B	Astrophysicists greedy, math	1100	x12493
1835D	Doctor's Brown Hypothesis dfs and similar, graphs, math, number theory	2900	x470
1835C	Twin Clusters bitmasks, brute force, constructive algorithms, math, probabilities	2600	x967
1835B	Lottery binary search, brute force, greedy, math, two pointers	2500	x927
1835A	k-th equality brute force, implementation, math	1700	x7670
1834F	Typewriter brute force, math	2500	x504
1834E	MEX of LCM binary search, data structures, implementation, math, number theory	2300	x2146
1834C	Game with Reversing games, greedy, math, strings	1200	x13073
1834B	Maximum Strength greedy, math	1000	x14966
1834A	Unit Array greedy, math	800	x23213
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x7116
1833C	Vlad Building Beautiful Array greedy, math	800	x25907
1832D2	Red-Blue Operations (Hard Version) binary search, constructive algorithms, greedy, implementation, math	2400	x1867
1832D1	Red-Blue Operations (Easy Version) binary search, greedy, implementation, math	2100	x2881
1830E	Bully Sort data structures, math	3500	x236
1830C	Hyperregular Bracket Strings combinatorics, greedy, hashing, math, number theory, sortings	2400	x1589
1830B	The BOSS Can Count Pairs brute force, math	2000	x4767
1829H	Don't Blame Me bitmasks, combinatorics, dp, math	1700	x7508
1829G	Hits Different data structures, dp, implementation, math	1600	x10041
1829F	Forever Winter dfs and similar, graphs, math	1300	x17061
1828B	Permutation Swap math, number theory	900	x22060
1828A	Divisible Array constructive algorithms, math	800	x23424
1827A	Counting Orders combinatorics, math, sortings, two pointers	1100	x18419
1826F	Fading into Fog geometry, interactive, math, probabilities	2800	x346
1826C	Dreaming of Freedom greedy, math, number theory	1300	x13271
1826B	Lunatic Never Content math, number theory	1100	x16865
1825B	LuoTianyi and the Table greedy, math	1000	x14478
1824B2	LuoTianyi and the Floating Islands (Hard Version) combinatorics, dfs and similar, math, probabilities, trees	2300	x2577
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x4484
1823F	Random Walk dp, graphs, math, probabilities, trees	2600	x844
1823E	Removing Graph brute force, dp, games, graphs, math	2500	x1213
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3763
1823C	Strongly Composite greedy, math, number theory	1300	x12058
1823B	Sort with Step brute force, math, sortings	900	x15804
1823A	A-characteristic combinatorics, constructive algorithms, math	800	x16012
1822G2	Magic Triples (Hard Version) brute force, data structures, math, number theory	2200	x2376
1822G1	Magic Triples (Easy Version) brute force, data structures, math, number theory	1700	x6877
1822E	Making Anti-Palindromes greedy, math, strings	1600	x10199
1822D	Super-Permutation constructive algorithms, math	1200	x16411
1822C	Bun Lover math	800	x22699
1822B	Karina and Array greedy, math, sortings	800	x24535
1821F	Timber combinatorics, dp, fft, math	2600	x729
1821D	Black Cells binary search, brute force, greedy, math	1900	x4894
1821C	Tear It Apart brute force, implementation, math, strings	1300	x14048
1821A	Matching combinatorics, math	800	x19654
1820B	JoJo's Incredible Adventures math, strings, two pointers	1100	x14175
1819E	Roads in E City interactive, math, probabilities, trees	3200	x276
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1438
1817C	Similar Polynomials combinatorics, math	2400	x961
1815F	OH NO1 (-2-3-4) constructive algorithms, graphs, math	3500	x218
1815E	Bosco and Particle dp, math, number theory, strings	3100	x335
1815D	XOR Counting bitmasks, combinatorics, dp, math	2600	x1094
1815A	Ian and Array Sorting greedy, math	1300	x13838
1814D	Balancing Weapons binary search, brute force, data structures, math, two pointers	2500	x850
1814B	Long Legs brute force, math	1700	x9846
1814A	Coins implementation, math	800	x27400
1812E	Not a Geometry Problem special problem, special problem, constructive algorithms, geometry, math		x3981
1812D	Trivial Conjecture *special problem, constructive algorithms, math, number theory		x4631
1811G2	Vlad and the Nice Paths (hard version) binary search, combinatorics, data structures, dp, math, two pointers	2200	x1703
1811G1	Vlad and the Nice Paths (easy version) combinatorics, dp, math	2100	x2010
1811E	Living Sequence binary search, dp, math, number theory	1500	x12027
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x7320
1811B	Conveyor Belts implementation, math	1000	x20104
1811A	Insert Digit greedy, math, strings	800	x30683
1810H	Last Number combinatorics, math	2900	x134
1810F	M-tree data structures, math, sortings, trees	2800	x562
1810D	Climbing the Tree binary search, math	1700	x7322
1810B	Candies constructive algorithms, math, number theory	800	x17354
1809G	Prediction combinatorics, dp, math	2800	x435
1809E	Two Tanks binary search, dp, implementation, math	2400	x817
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x12475
1809B	Points on Plane binary search, greedy, math	1000	x19490
1808E3	Minibuses on Venus (hard version) brute force, combinatorics, dp, math	2800	x432
1808B	Playing in a Casino math, sortings	1200	x16021
1806F2	GCD Master (hard version) greedy, math, sortings	2900	x288
1806F1	GCD Master (easy version) greedy, math, number theory, sortings	2900	x346
1806D	DSU Master combinatorics, dp, dsu, math	2500	x874
1806C	Sequence Master brute force, constructive algorithms, math	1600	x7454
1806A	Walking Master geometry, greedy, math	800	x23710
1805F2	Survival of the Weakest (hard version) greedy, math, sortings, two pointers	3100	x339
1805F1	Survival of the Weakest (easy version) binary search, brute force, implementation, math, sortings	2600	x869
1805C	Place for a Selfie binary search, data structures, geometry, math	1400	x12331
1804C	Pull Your Luck brute force, greedy, math, number theory	1500	x11874
1804A	Lame King greedy, math	800	x17832
1802B	Settlement of Guinea Pigs greedy, implementation, math	1000	x13153
1801F	Another n-dimensional chocolate bar dp, math, meet-in-the-middle, number theory	2700	x562
1799G	Count Voting combinatorics, dp, math	2600	x736
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1180
1799B	Equalize by Divide brute force, constructive algorithms, greedy, math	1200	x11141
1799A	Recent Actions data structures, greedy, implementation, math	800	x11492
1798F	Gifts from Grandfather Ahmed dp, math, number theory	2500	x481
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x9572
1798C	Candy Store greedy, math, number theory	1700	x8039
1797E	Li Hua and Array brute force, data structures, dsu, math, number theory, two pointers	2300	x1242
1796F	Strange Triples brute force, math, number theory	2900	x171
1796C	Maximum Set binary search, math	1600	x10178
1795E	Explosions? binary search, data structures, dp, greedy, math	2200	x1977
1795D	Triangle Coloring combinatorics, math	1600	x8891
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3494