Problemset - Codeforces

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Before contest
Codeforces Round #792 (Div. 1)
2 days

Before contest
Codeforces Round #792 (Div. 2)
2 days

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Difficulty: —

math

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Problems

#	Name
1680D	Dog Walking brute force, greedy, math	2400	x487
1680A	Minimums and Maximums brute force, math	800	x14735
1679F	Formalism for Formalism bitmasks, dp, math	2600	x151
1679E	Typical Party in Dorm bitmasks, brute force, combinatorics, dp, math, strings	2400	x445
1679A	AvtoBus brute force, greedy, math, number theory	900	x10845
1677F	Tokitsukaze and Gems dp, math	3500	x46
1677D	Tokitsukaze and Permutations dp, math	2500	x655
1677B	Tokitsukaze and Meeting data structures, implementation, math	1700	x2218
1676C	Most Similar Words brute force, greedy, implementation, implementation, math, strings	800	x17794
1676B	Equal Candies greedy, math, sortings	800	x23056
1675A	Food for Animals greedy, math	800	x19804
1674E	Breaking the Wall binary search, brute force, constructive algorithms, greedy, math	2000	x3960
1674B	Dictionary combinatorics, math	800	x17891
1674A	Number Transformation constructive algorithms, math	800	x18282
1673F	Anti-Theft Road Planning bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math	2400	x488
1673E	Power or XOR? bitmasks, combinatorics, math, number theory	2500	x397
1673D	Lost Arithmetic Progression combinatorics, math, number theory	1900	x2119
1673C	Palindrome Basis brute force, dp, math, number theory	1500	x6518
1672G	Cross Xor constructive algorithms, graphs, math, matrices	3200	x144
1672A	Log Chopping games, implementation, math	800	x12532
1671F	Permutation Counting brute force, combinatorics, dp, fft, math	2700	x169
1671C	Dolce Vita binary search, brute force, greedy, math	1200	x9772
1671B	Consecutive Points Segment brute force, math, sortings	1000	x12902
1670D	Very Suspicious binary search, brute force, geometry, greedy, implementation, math	1700	x3077
1670C	Where is the Pizza? data structures, dfs and similar, dsu, graphs, implementation, math	1400	x5392
1669H	Maximal AND bitmasks, greedy, math	1300	x8889
1669E	2-Letter Strings data structures, math, strings	1200	x10020
1669C	Odd/Even Increments greedy, greedy, implementation, math	800	x21368
1668B	Social Distance greedy, math, sortings	900	x11800
1668A	Direction Change implementation, math	800	x13459
1667E	Centroid Probabilities combinatorics, dp, fft, math	3000	x259
1667C	Half Queen Cover constructive algorithms, math	2400	x905
1667A	Make it Increasing brute force, greedy, math	1300	x9626
1666I	Interactive Treasure Hunt brute force, constructive algorithms, geometry, interactive, math	2200	x869
1666H	Heroes of Might math	3500	x23
1666G	Global Warming geometry, math	3100	x84
1666E	Even Split binary search, constructive algorithms, greedy, math	2500	x387
1665D	GCD Guess bitmasks, chinese remainder theorem, constructive algorithms, games, interactive, math, number theory	2000	x2379
1665A	GCD vs LCM constructive algorithms, math	800	x18336
1663D	Is it rated - 3 combinatorics, dp, math		x1023
1663C	Pōja Verdon implementation, math		x4781
1663B	Mike's Sequence divide and conquer, implementation, math		x2557
1662N	Drone Photo combinatorics, math, sortings		x235
1662L	Il Derby della Madonnina data structures, dp, math		x424
1662H	Boundary brute force, math		x1320
1662E	Round Table math		x41
1662C	European Trip dp, graphs, math, matrices		x139
1661E	Narrow Components brute force, data structures, dp, dsu, math, trees	2500	x614
1661C	Water the Trees binary search, greedy, math	1700	x6040
1661A	Array Balancing greedy, math	800	x15498
1660F2	Promising String (hard version) data structures, implementation, math, strings	2100	x1768
1660F1	Promising String (easy version) brute force, implementation, math, strings	1700	x4996
1660D	Maximum Product Strikes Back brute force, implementation, math, two pointers	1600	x5359
1660B	Vlad and Candies math	800	x21873
1660A	Vasya and Coins greedy, math	800	x26666
1659D	Reverse Sort Sum constructive algorithms, data structures, greedy, implementation, math, two pointers	1900	x2537
1659C	Line Empire binary search, brute force, dp, greedy, implementation, math	1500	x5919
1659A	Red Versus Blue constructive algorithms, greedy, implementation, math	1000	x11457
1658F	Juju and Binary String brute force, constructive algorithms, greedy, math	2700	x481
1658E	Gojou and Matrix Game data structures, dp, games, hashing, implementation, math, number theory, sortings	2500	x675
1658D2	388535 (Hard Version) bitmasks, brute force, data structures, math	2300	x1719
1658D1	388535 (Easy Version) bitmasks, math	1600	x6277
1658C	Shinju and the Lost Permutation constructive algorithms, math	1700	x7146
1658B	Marin and Anti-coprime Permutation combinatorics, math, number theory	800	x15509
1658A	Marin and Photoshoot constructive algorithms, implementation, math	800	x17605
1657E	Star MST combinatorics, dp, graph matchings, math	2200	x1171
1657D	For Gamers. By Gamers. binary search, brute force, greedy, math, sortings	2000	x3726
1657A	Integer Moves brute force, math	800	x20339
1656H	Equal LCM Subsets data structures, math, number theory	3200	x169
1656G	Cycle Palindrome constructive algorithms, graphs, math	3200	x150
1656F	Parametric MST binary search, constructive algorithms, graphs, greedy, math, sortings	2600	x666
1656E	Equal Tree Sums constructive algorithms, dfs and similar, math, trees	2200	x2294
1656D	K-good constructive algorithms, math, number theory	1900	x4812
1656C	Make Equal With Mod constructive algorithms, math, number theory, sortings	1200	x12576
1656B	Subtract Operation data structures, greedy, math, two pointers	1100	x13208
1656A	Good Pairs math, sortings	800	x16471
1654H	Three Minimums combinatorics, constructive algorithms, divide and conquer, dp, fft, math	3500	x36
1654E	Arithmetic Operations brute force, data structures, graphs, math	2300	x1390
1654D	Potion Brewing Class dfs and similar, math, number theory, trees	2100	x2146
1651E	Sum of Matchings brute force, combinatorics, constructive algorithms, dfs and similar, graph matchings, greedy, math	2600	x350
1650E	Rescheduling the Exam binary search, data structures, greedy, implementation, math, sortings	1900	x3037
1650D	Twist the Permutation brute force, constructive algorithms, implementation, math	1300	x9472
1650B	DIV + MOD math	900	x19716
1648B	Integral Array brute force, constructive algorithms, data structures, math	1800	x4413
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x8210
1647D	Madoka and the Best School in Russia constructive algorithms, dp, math, number theory	1900	x3869
1647A	Madoka and Math Dad implementation, math	800	x19225
1646E	Power Board brute force, dp, math, number theory	2200	x1567
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x8844
1646A	Square Counting math	800	x20021
1644F	Basis combinatorics, fft, math, number theory	2900	x221
1644E	Expand the Path brute force, combinatorics, data structures, implementation, math	1900	x2221
1644D	Cross Coloring data structures, implementation, math	1700	x5239
1641E	Special Positions combinatorics, divide and conquer, fft, math	3300	x141
1641D	Two Arrays bitmasks, brute force, combinatorics, greedy, hashing, math, two pointers	2700	x701
1638C	Inversion Graph data structures, dsu, graphs, math	1300	x11323
1638B	Odd Swap Sort data structures, math, sortings	1100	x16058
1638A	Reverse constructive algorithms, greedy, math	800	x19013
1637H	Minimize Inversions Number data structures, greedy, math, sortings	3500	x143
1637G	Birthday constructive algorithms, greedy, math	3000	x303

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