Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1823A	A-characteristic combinatorics, constructive algorithms, math	800	x15932
1822G2	Magic Triples (Hard Version) brute force, data structures, math, number theory	2200	x2357
1822G1	Magic Triples (Easy Version) brute force, data structures, math, number theory	1700	x6777
1822E	Making Anti-Palindromes greedy, math, strings	1600	x10014
1822D	Super-Permutation constructive algorithms, math	1200	x16176
1822C	Bun Lover math	800	x22550
1822B	Karina and Array greedy, math, sortings	800	x24341
1821F	Timber combinatorics, dp, fft, math	2600	x723
1821D	Black Cells binary search, brute force, greedy, math	1900	x4845
1821C	Tear It Apart brute force, implementation, math, strings	1300	x13866
1821A	Matching combinatorics, math	800	x19550
1820B	JoJo's Incredible Adventures math, strings, two pointers	1100	x13889
1819E	Roads in E City interactive, math, probabilities, trees	3200	x274
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1418
1817C	Similar Polynomials combinatorics, math	2400	x941
1815F	OH NO1 (-2-3-4) constructive algorithms, graphs, math	3500	x218
1815E	Bosco and Particle dp, math, number theory, strings	3100	x332
1815D	XOR Counting bitmasks, combinatorics, dp, math	2600	x1078
1815A	Ian and Array Sorting greedy, math	1300	x13711
1814D	Balancing Weapons binary search, brute force, data structures, math, two pointers	2500	x834
1814B	Long Legs brute force, math	1700	x9729
1814A	Coins implementation, math	800	x26754
1812E	Not a Geometry Problem special problem, special problem, constructive algorithms, geometry, math		x3967
1812D	Trivial Conjecture *special problem, constructive algorithms, math, number theory		x4357
1811G2	Vlad and the Nice Paths (hard version) binary search, combinatorics, data structures, dp, math, two pointers	2200	x1682
1811G1	Vlad and the Nice Paths (easy version) combinatorics, dp, math	2100	x1983
1811E	Living Sequence binary search, dp, math, number theory	1500	x11833
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x7207
1811B	Conveyor Belts implementation, math	1000	x19945
1811A	Insert Digit greedy, math, strings	800	x30457
1810H	Last Number combinatorics, math	2900	x133
1810F	M-tree data structures, math, sortings, trees	2800	x552
1810D	Climbing the Tree binary search, math	1700	x7245
1810B	Candies constructive algorithms, math, number theory	800	x17284
1809G	Prediction combinatorics, dp, math	2800	x429
1809E	Two Tanks binary search, dp, implementation, math	2400	x807
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x12246
1809B	Points on Plane binary search, greedy, math	1000	x19318
1808E3	Minibuses on Venus (hard version) brute force, combinatorics, dp, math	2800	x427
1808B	Playing in a Casino math, sortings	1200	x15546
1806F2	GCD Master (hard version) greedy, math, sortings	2900	x282
1806F1	GCD Master (easy version) greedy, math, number theory, sortings	2900	x342
1806D	DSU Master combinatorics, dp, dsu, math	2500	x866
1806C	Sequence Master brute force, constructive algorithms, math	1600	x7373
1806A	Walking Master geometry, greedy, math	800	x23168
1805F2	Survival of the Weakest (hard version) greedy, math, sortings, two pointers	3100	x335
1805F1	Survival of the Weakest (easy version) binary search, brute force, implementation, math, sortings	2600	x850
1805C	Place for a Selfie binary search, data structures, geometry, math	1400	x12234
1804C	Pull Your Luck brute force, greedy, math, number theory	1500	x11754
1804A	Lame King greedy, math	800	x17778
1802B	Settlement of Guinea Pigs greedy, implementation, math	1000	x13067
1801F	Another n-dimensional chocolate bar dp, math, meet-in-the-middle, number theory	2700	x556
1799G	Count Voting combinatorics, dp, math	2600	x719
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1171
1799B	Equalize by Divide brute force, constructive algorithms, greedy, math	1200	x11010
1799A	Recent Actions data structures, greedy, implementation, math	800	x11445
1798F	Gifts from Grandfather Ahmed dp, math, number theory	2500	x474
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x9403
1798C	Candy Store greedy, math, number theory	1700	x7946
1797E	Li Hua and Array brute force, data structures, dsu, math, number theory, two pointers	2300	x1221
1796F	Strange Triples brute force, math, number theory	2900	x170
1796C	Maximum Set binary search, math	1600	x10045
1795E	Explosions? binary search, data structures, dp, greedy, math	2200	x1955
1795D	Triangle Coloring combinatorics, math	1600	x8759
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3445
1794C	Scoring Subsequences binary search, greedy, math, two pointers	1300	x12959
1794B	Not Dividing constructive algorithms, greedy, math	900	x20614
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x5913
1793B	Fedya and Array constructive algorithms, math	1100	x15488
1793A	Yet Another Promotion greedy, math	800	x17831
1792D	Fixed Prefix Permutations binary search, bitmasks, data structures, hashing, math, sortings	1700	x6017
1792C	Min Max Sort binary search, brute force, greedy, math, two pointers	1500	x13625
1792B	Stand-up Comedian greedy, math	1200	x20651
1790F	Timofey and Black-White Tree brute force, dfs and similar, divide and conquer, graphs, greedy, math, shortest paths, trees	2100	x3205
1790C	Premutation brute force, implementation, math	1000	x23325
1790B	Taisia and Dice greedy, greedy, math	800	x26941
1790A	Polycarp and the Day of Pi implementation, math, strings	800	x36200
1789E	Serval and Music Game brute force, dp, implementation, math, number theory	2500	x779
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8265
1789A	Serval and Mocha's Array brute force, math, number theory	800	x17692
1788D	Moving Dots binary search, brute force, combinatorics, math, two pointers	2000	x3789
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x16746
1788B	Sum of Two Numbers constructive algorithms, greedy, implementation, math, probabilities	1100	x19558
1788A	One and Two brute force, implementation, math	800	x28599
1787F	Inverse Transformation constructive algorithms, implementation, math	2500	x640
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math	2100	x2227
1787C	Remove the Bracket dp, greedy, math	1600	x6855
1787B	Number Factorization greedy, math, number theory	1100	x12914
1787A	Exponential Equation constructive algorithms, math	800	x18914
1783E	Game of the Year brute force, data structures, math, number theory	2300	x2052
1783B	Matrix of Differences constructive algorithms, math	1100	x17467
1783A	Make it Beautiful constructive algorithms, math, sortings	800	x28371
1781F	Bracket Insertion combinatorics, dp, math, trees	2700	x749
1781D	Many Perfect Squares brute force, math, number theory	1800	x5357
1781A	Parallel Projection geometry, math	800	x14959
1780G	Delicious Dessert binary search, dsu, hashing, math, number theory, string suffix structures	2400	x680
1780E	Josuke and Complete Graph binary search, brute force, data structures, math, number theory	2400	x1332
1780B	GCD Partition brute force, greedy, math, number theory	1100	x17181
1779B	MKnez's ConstructiveForces Task constructive algorithms, math	900	x23209
1778F	Maximizing Root dfs and similar, dp, graphs, math, number theory, trees	2600	x611