Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
2131F	Unjust Binary Life binary search, data structures, greedy, greedy, math, sortings, two pointers	1900	x4896
2131E	Adjacent XOR brute force, greedy	1400	x18212
2131D	Arboris Contractio data structures, graphs, greedy, trees	1400	x15203
2131C	Make it Equal math, number theory	1100	x22715
2131B	Alternating Series constructive algorithms, greedy, math	800	x31820
2131A	Lever math	800	x40199
2130B	Pathless constructive algorithms	1100	x22316
2130A	Submission is All You Need greedy, math	800	x29292
2129F2	Top-K Tracker (Hard Version) interactive, interactive	3500	x146
2129F1	Top-K Tracker (Easy Version) interactive	3500	x1030
2129E	Induced Subgraph Queries data structures, graphs, sortings	3000	x726
2129D	Permutation Blackhole brute force, combinatorics, dp, implementation, math	2600	x3792
2129C3	Interactive RBS (Hard Version) binary search, bitmasks, constructive algorithms, dp, interactive	2300	x2339
2129C2	Interactive RBS (Medium Version) binary search, bitmasks, constructive algorithms, interactive	2000	x3925
2129C1	Interactive RBS (Easy Version) binary search, bitmasks, constructive algorithms, interactive	1900	x5325
2129B	Stay or Mirror brute force, data structures, dp, greedy, sortings	1600	x16291
2129A	Double Perspective constructive algorithms, dp, dsu, graphs, greedy, sortings	1300	x19421
2128F	Strict Triangle graphs, greedy, shortest paths	3200	x416
2128E2	Submedians (Hard Version) binary search, constructive algorithms, data structures, math, two pointers	2600	x841
2128E1	Submedians (Easy Version) binary search, data structures, dp, greedy, math	1900	x6971
2128D	Sum of LDS brute force, combinatorics, dp, greedy, math	1600	x13192
2128C	Leftmost Below greedy, math	1200	x21823
2128B	Deque Process constructive algorithms, greedy, sortings, two pointers	1100	x22422
2128A	Recycling Center greedy, sortings	800	x29372
2127H	23 Rises Again brute force, dfs and similar, dp, flows, graph matchings, graphs, greedy, implementation, probabilities, trees	3100	x2819
2127G2	Inter Active (Hard Version) binary search, bitmasks, constructive algorithms, graphs, implementation, interactive, math, probabilities	3500	x172
2127G1	Inter Active (Easy Version) binary search, constructive algorithms, interactive, probabilities	3400	x195
2127F	Hamed and AghaBalaSar brute force, combinatorics, dp, math, probabilities	2800	x3018
2127E	Ancient Tree constructive algorithms, data structures, dfs and similar, dsu, greedy, trees	2100	x5479
2127D	Root was Built by Love, Broken by Destiny combinatorics, dfs and similar, graphs, trees	1800	x8509
2127C	Trip Shopping games, greedy, sortings	1400	x15247
2127B	Hamiiid, Haaamid... Hamid? games, greedy	1300	x15277
2127A	Mix Mex Max constructive algorithms, greedy, math	800	x22267
2126G2	Big Wins! (hard version) binary search, data structures, divide and conquer, dsu, trees, two pointers	2400	x1268
2126G1	Big Wins! (easy version) binary search, data structures, dp, dsu, two pointers	2200	x2625
2126F	1-1-1, Free Tree! brute force, data structures, dfs and similar, graphs, implementation, trees	2000	x4530
2126E	G-C-D, Unlucky! math, number theory	1400	x17906
2126D	This Is the Last Time data structures, greedy, sortings	1200	x25088
2126C	I Will Definitely Make It greedy, sortings	1100	x27328
2126B	No Casino in the Mountains dp, greedy	800	x38940
2126A	Only One Digit brute force, implementation, math	800	x54805
2125F	Timofey and Docker binary search, divide and conquer, dp	3000	x479
2125E	Sets of Complementary Sums brute force, combinatorics, dp, math, two pointers	2500	x1477
2125D	Segments Covering dp, math, probabilities	1600	x9927
2125C	Count Good Numbers bitmasks, combinatorics, math, number theory	1100	x23733
2125B	Left and Down math, number theory	900	x29053
2125A	Difficult Contest constructive algorithms, implementation, sortings, strings	800	x28837
2124I	Lexicographic Partition constructive algorithms, math, trees	3500	x778
2124H	Longest Good Subsequence dp, math, trees	3400	x267
2124G	Maximise Sum binary search, data structures	3200	x770
2124F2	Appending Permutations (Hard Version) combinatorics, dp	2800	x1261
2124F1	Appending Permutations (Easy Version) combinatorics, dp	2300	x3562
2124E	Make it Zero constructive algorithms, greedy, math	2100	x5901
2124D	Make a Palindrome greedy, sortings, two pointers	1700	x10168
2124C	Subset Multiplication constructive algorithms, greedy, math, number theory	1300	x17610
2124B	Minimise Sum greedy	1000	x23238
2124A	Deranged Deletions greedy, sortings	800	x21652
2123G	Modular Sorting brute force, data structures, greedy, math, number theory, sortings	2100	x3502
2123F	Minimize Fixed Points constructive algorithms, number theory	1700	x10357
2123E	MEX Count binary search, data structures, greedy, sortings, two pointers	1400	x15640
2123D	Binary String Battle constructive algorithms, games, greedy	1200	x22934
2123C	Prefix Min and Suffix Max brute force, data structures	1000	x32290
2123B	Tournament greedy	800	x35833
2123A	Blackboard Game math	800	x42894
2122G	Tree Parking combinatorics, fft, math, trees	3300	x2443
2122F	Colorful Polygon constructive algorithms, divide and conquer, geometry	3400	x217
2122E	Greedy Grid Counting combinatorics, dp, greedy, math	2600	x3085
2122D	Traffic Lights brute force, data structures, divide and conquer, dp, graphs, greedy, shortest paths	2400	x3187
2122C	Manhattan Pairs constructive algorithms, geometry, greedy, math, sortings	1700	x10759
2122B	Pile Shuffling greedy, math	1100	x17891
2122A	Greedy Grid constructive algorithms, greedy	800	x21713
2121H	Ice Baby binary search, brute force, data structures, dp, implementation, sortings	2300	x2361
2121G	Gangsta data structures, divide and conquer, math, sortings	1900	x5602
2121F	Yamakasi binary search, brute force, data structures, greedy, two pointers	1800	x8512
2121E	Sponsor of Your Problems dp, greedy, implementation, strings	1500	x15476
2121D	1709 implementation, sortings	1300	x18965
2121C	Those Who Are With Us greedy, greedy, implementation	1200	x22757
2121B	Above the Clouds constructive algorithms, greedy, strings	800	x33139
2121A	Letter Home brute force, math	800	x40272
2120G	Eulerian Line Graph graphs, greedy, math	3000	x120
2120F	Superb Graphs 2-sat, graphs	2600	x511
2120E	Lanes of Cars binary search, dp, ternary search	2300	x1929
2120D	Matrix game combinatorics, math	1800	x6068
2120C	Divine Tree constructive algorithms, greedy, math, sortings, trees	1400	x13209
2120B	Square Pool geometry	1000	x18289
2120A	Square of Rectangles geometry, math	800	x20736
2119F	Volcanic Eruptions dfs and similar, dp, greedy, shortest paths, trees	3300	x199
2119E	And Constraint bitmasks, dp, greedy	2600	x748
2119D	Token Removing combinatorics, dp, math	2100	x3631
2119C	A Good Problem bitmasks, constructive algorithms, math	1300	x17077
2119B	Line Segments geometry, greedy, math	1200	x19142
2119A	Add or XOR bitmasks, greedy, math	800	x27980
2118F	Shifts and Swaps data structures, graphs, hashing, trees	3100	x307
2118E	Grid Coloring constructive algorithms, geometry, greedy, math	2400	x1468
2118D2	Red Light, Green Light (Hard version) binary search, brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory	2200	x2614
2118D1	Red Light, Green Light (Easy version) brute force, dfs and similar, dp, graphs, implementation, number theory	1700	x8760
2118C	Make It Beautiful bitmasks, data structures, greedy, math	1300	x19332
2118B	Make It Permutation constructive algorithms	1200	x20695
2118A	Equal Subsequences constructive algorithms, greedy	800	x29638
2117H	Incessant Rain data structures, divide and conquer, sortings	2500	x1042

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