Problemset - Codeforces

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Codeforces Round (Div. 2)
5 days

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Problems

#	Name
2139B	Cake Collection greedy	800	x20950
2139A	Maple and Multiplication greedy, math	800	x25980
2138F	Ode to the Bridge Builder constructive algorithms, geometry	3500	x83
2138E2	Determinant Construction (Hard Version) brute force, constructive algorithms, math, matrices, number theory	3100	x186
2138E1	Determinant Construction (Easy Version) brute force, constructive algorithms, math, matrices, number theory	3100	x243
2138D	Antiamuny and Slider Movement brute force, combinatorics, implementation, math, sortings	2600	x645
2138C2	Maple and Tree Beauty (Hard Version) bitmasks, brute force, dfs and similar, dp, fft, trees	2000	x3402
2138C1	Maple and Tree Beauty (Easy Version) brute force, dfs and similar, dp, graphs, trees	1800	x5479
2138B	Antiamuny Wants to Learn Swap data structures, greedy, two pointers	1900	x5392
2138A	Cake Assignment bitmasks, constructive algorithms, greedy	1100	x17138
2137G	Cry Me a River dfs and similar, dp, games, graphs	2200	x1944
2137F	Prefix Maximum Invariance binary search, combinatorics, data structures, sortings	1900	x4088
2137E	Mexification brute force, implementation, math	1500	x10256
2137D	Replace with Occurrences constructive algorithms	1200	x19699
2137C	Maximum Even Sum brute force, greedy, implementation, math	1100	x23074
2137B	Fun Permutation constructive algorithms, math, number theory	900	x26647
2137A	Collatz Conjecture constructive algorithms, math	800	x35473
2136B	Like the Bitset constructive algorithms, greedy, two pointers	900	x21098
2136A	In the Dream greedy, math	800	x26284
2135F	To the Infinity data structures, hashing, math, trees	3500	x255
2135E2	Beyond the Palindrome (Hard Version) combinatorics, dp, math, number theory	3500	x168
2135E1	Beyond the Palindrome (Easy Version) combinatorics, dp, math	3300	x370
2135D2	From the Unknown (Hard Version) brute force, constructive algorithms, interactive, math	2500	x1003
2135D1	From the Unknown (Easy Version) constructive algorithms, interactive, math	2100	x2605
2135C	By the Assignment binary search, bitmasks, combinatorics, dfs and similar, dsu, graphs, math	2000	x4271
2135B	For the Champion constructive algorithms, interactive, math	1700	x7571
2135A	Against the Difference data structures, dp	1200	x18739
2134F	Permutation Oddness combinatorics, dp, math	2900	x657
2134E	Power Boxes constructive algorithms, dp, implementation, interactive	2300	x2428
2134D	Sliding Tree constructive algorithms, dfs and similar, greedy, implementation, trees	2300	x3674
2134C	Even Larger brute force, greedy, implementation	1200	x18845
2134B	Add 0 or K constructive algorithms, math, number theory	1200	x21103
2134A	Painting With Two Colors constructive algorithms, implementation, math	800	x26735
2133F	Flint and Steel data structures, dp, graphs	3000	x468
2133E	I Yearned For The Mines constructive algorithms, dfs and similar, dp, greedy, trees	2500	x1715
2133D	Chicken Jockey dp, greedy	1900	x7561
2133C	The Nether graphs, interactive	1400	x12925
2133B	Villagers greedy	800	x25670
2133A	Redstone? brute force, data structures, implementation, math	800	x31134
2132G	Famous Choreographer hashing, implementation, strings	2600	x516
2132F	Rada and the Chamomile Valley dfs and similar, graphs, shortest paths	2100	x2798
2132E	Arithmetics Competition binary search, data structures, greedy, sortings, ternary search	1700	x7683
2132D	From 1 to Infinity binary search, dp, implementation, math	1600	x8910
2132C2	The Cunning Seller (hard version) binary search, greedy, math	1400	x13442
2132C1	The Cunning Seller (easy version) greedy, math	1000	x27925
2132B	The Secret Number math	900	x33763
2132A	Homework brute force, implementation, strings	800	x43675
2131H	Sea, You & copriMe brute force, constructive algorithms, graphs, greedy, math, number theory	2600	x891
2131G	Wafu! bitmasks, brute force, data structures, dfs and similar, dp, math	2000	x3809
2131F	Unjust Binary Life binary search, data structures, greedy, greedy, math, sortings, two pointers	1900	x4754
2131E	Adjacent XOR brute force, greedy	1400	x17280
2131D	Arboris Contractio data structures, graphs, greedy, trees	1400	x14444
2131C	Make it Equal math, number theory	1100	x21785
2131B	Alternating Series constructive algorithms, greedy, math	800	x31090
2131A	Lever math	800	x39059
2130B	Pathless constructive algorithms	1100	x21564
2130A	Submission is All You Need greedy, math	800	x28685
2129F2	Top-K Tracker (Hard Version) interactive, interactive	3500	x97
2129F1	Top-K Tracker (Easy Version) interactive	3500	x200
2129E	Induced Subgraph Queries data structures, graphs, sortings	3000	x482
2129D	Permutation Blackhole brute force, combinatorics, dp, implementation, math	2600	x1198
2129C3	Interactive RBS (Hard Version) binary search, bitmasks, constructive algorithms, dp, interactive	2300	x1692
2129C2	Interactive RBS (Medium Version) binary search, bitmasks, constructive algorithms, interactive	2000	x2555
2129C1	Interactive RBS (Easy Version) binary search, bitmasks, constructive algorithms, interactive	1900	x3928
2129B	Stay or Mirror brute force, data structures, dp, greedy, sortings	1600	x13618
2129A	Double Perspective constructive algorithms, dp, dsu, graphs, greedy, sortings	1300	x17012
2128F	Strict Triangle graphs, greedy, shortest paths	3200	x387
2128E2	Submedians (Hard Version) binary search, constructive algorithms, data structures, math, two pointers	2600	x803
2128E1	Submedians (Easy Version) binary search, data structures, dp, greedy, math	1900	x6618
2128D	Sum of LDS brute force, combinatorics, dp, greedy, math	1600	x12440
2128C	Leftmost Below greedy, math	1200	x20808
2128B	Deque Process constructive algorithms, greedy, sortings, two pointers	1100	x21599
2128A	Recycling Center greedy, sortings	800	x28659
2127H	23 Rises Again brute force, dfs and similar, dp, flows, graph matchings, graphs, greedy, implementation, probabilities, trees	3100	x842
2127G2	Inter Active (Hard Version) binary search, bitmasks, constructive algorithms, graphs, implementation, interactive, math, probabilities	3500	x112
2127G1	Inter Active (Easy Version) binary search, constructive algorithms, interactive, probabilities	3400	x105
2127F	Hamed and AghaBalaSar brute force, combinatorics, dp, math, probabilities	2800	x1237
2127E	Ancient Tree constructive algorithms, data structures, dfs and similar, dsu, greedy, trees	2100	x3032
2127D	Root was Built by Love, Broken by Destiny combinatorics, dfs and similar, graphs, trees	1800	x6393
2127C	Trip Shopping games, greedy, sortings	1400	x12749
2127B	Hamiiid, Haaamid... Hamid? games, greedy	1300	x13611
2127A	Mix Mex Max constructive algorithms, greedy, math	800	x19957
2126G2	Big Wins! (hard version) binary search, data structures, divide and conquer, dsu, trees, two pointers	2400	x1182
2126G1	Big Wins! (easy version) binary search, data structures, dp, dsu, two pointers	2200	x2501
2126F	1-1-1, Free Tree! brute force, data structures, dfs and similar, graphs, implementation, trees	2000	x4339
2126E	G-C-D, Unlucky! math, number theory	1400	x17151
2126D	This Is the Last Time data structures, greedy, sortings	1200	x24170
2126C	I Will Definitely Make It greedy, sortings	1100	x26446
2126B	No Casino in the Mountains dp, greedy	800	x37937
2126A	Only One Digit brute force, implementation, math	800	x51498
2125F	Timofey and Docker binary search, divide and conquer, dp	3000	x403
2125E	Sets of Complementary Sums brute force, combinatorics, dp, math, two pointers	2500	x1424
2125D	Segments Covering dp, math, probabilities	1600	x9356
2125C	Count Good Numbers bitmasks, combinatorics, math, number theory	1100	x22897
2125B	Left and Down math, number theory	900	x27593
2125A	Difficult Contest constructive algorithms, implementation, sortings, strings	800	x28164
2124I	Lexicographic Partition constructive algorithms, math, trees	3500	x213
2124H	Longest Good Subsequence dp, math, trees	3400	x217
2124G	Maximise Sum binary search, data structures	3200	x325
2124F2	Appending Permutations (Hard Version) combinatorics, dp	2800	x596

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