Problemset - Codeforces

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Codeforces Round (Div. 2)
7 days

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Problems

#	Name
1893C	Freedom of Choice brute force, greedy, implementation	2000	x2509
1893B	Neutral Tonality constructive algorithms, greedy, sortings, two pointers	1700	x8313
1893A	Anonymous Informant brute force, dfs and similar, graphs, implementation	1400	x11637
1891F	A Growing Tree data structures, dfs and similar, trees	2000	x3480
1891E	Brukhovich and Exams brute force, greedy, implementation, math, sortings	2500	x792
1891D	Suspicious logarithms binary search, brute force, math	1900	x3794
1891C	Smilo and Monsters binary search, constructive algorithms, greedy, sortings, two pointers	1500	x11958
1891B	Deja Vu brute force, math, sortings	1100	x16554
1891A	Sorting with Twos constructive algorithms, sortings	800	x18717
1890B	Qingshan Loves Strings constructive algorithms, implementation	800	x16967
1890A	Doremy's Paint 3 constructive algorithms	800	x23356
1889F	Doremy's Average Tree data structures, dp, greedy, trees	3500	x70
1889E	Doremy's Swapping Trees dfs and similar, graphs, trees	3500	x103
1889D	Game of Stacks brute force, dfs and similar, graphs, implementation, trees	3000	x540
1889C2	Doremy's Drying Plan (Hard Version) data structures, dp	2600	x913
1889C1	Doremy's Drying Plan (Easy Version) brute force, data structures, dp, greedy, sortings	2000	x3098
1889B	Doremy's Connecting Plan constructive algorithms, greedy, math, sortings	1700	x6964
1889A	Qingshan Loves Strings 2 constructive algorithms, greedy, implementation	1300	x12425
1887F	Minimum Segments constructive algorithms	3400	x120
1887E	Good Colorings binary search, constructive algorithms, graphs, interactive	3100	x342
1887D	Split binary search, data structures, divide and conquer, dsu, math, trees, two pointers	2700	x838
1887C	Minimum Array binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers	2400	x1618
1887B	Time Travel binary search, graphs, shortest paths	1900	x2770
1886F	Diamond Theft data structures, greedy	3300	x162
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1371
1886D	Monocarp and the Set combinatorics, data structures, math	2100	x3398
1886C	Decreasing String implementation, strings	1600	x10668
1886B	Fear of the Dark binary search, geometry, math	1200	x15525
1886A	Sum of Three brute force, constructive algorithms, math	800	x25027
1885A	Deterministic Scheduling for Extended Reality over 5G and Beyond *special problem
1884E	Hard Design greedy, implementation, math	2800	x271
1884D	Counting Rhyme dp, math, number theory	2100	x2969
1884C	Medium Design brute force, data structures, dp, greedy, sortings	1700	x5687
1884B	Haunted House binary search, greedy, math, two pointers	1100	x12094
1884A	Simple Design brute force, greedy, math	800	x16855
1883G2	Dances (Hard Version) binary search, greedy, sortings, two pointers	1900	x5051
1883G1	Dances (Easy version) binary search, greedy, two pointers	1400	x9804
1883F	You Are So Beautiful data structures	1400	x8714
1883E	Look Back bitmasks, greedy	1700	x7437
1883D	In Love data structures, greedy	1500	x10579
1883C	Raspberries dp, math	1000	x24335
1883B	Chemistry strings	900	x28724
1883A	Morning math	800	x24657
1882E2	Two Permutations (Hard Version) constructive algorithms	3100	x287
1882E1	Two Permutations (Easy Version) brute force, constructive algorithms, greedy, number theory	2400	x977
1882D	Tree XOR bitmasks, dfs and similar, dp, greedy, trees	1900	x5130
1882C	Card Game brute force, greedy	1500	x11697
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x14800
1882A	Increasing Sequence greedy	800	x24795
1881G	Anya and the Mysterious String binary search, data structures	2000	x2229
1881F	Minimum Maximum Distance dfs and similar, dp, graphs, shortest paths, trees	1700	x6290
1881E	Block Sequence dp	1500	x12484
1881D	Divide and Equalize math, number theory	1300	x15492
1881C	Perfect Square brute force, implementation	1200	x16307
1881B	Three Threadlets math	900	x24357
1881A	Don't Try to Count brute force, strings	800	x28867
1879F	Last Man Standing brute force, data structures, number theory	2800	x479
1879E	Interactive Game with Coloring brute force, constructive algorithms, dfs and similar, graphs, implementation, interactive, trees	2400	x1207
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x6924
1879C	Make it Alternating combinatorics, dp, greedy	1300	x15646
1879B	Chips on the Board constructive algorithms, greedy	900	x21685
1879A	Rigged! greedy	800	x22647
1878G	wxhtzdy ORO Tree binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees	2300	x1127
1878F	Vasilije Loves Number Theory brute force, math, number theory	1900	x3914
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x11723
1878D	Reverse Madness data structures, greedy	1600	x7875
1878C	Vasilije in Cacak math	900	x30008
1878B	Aleksa and Stack constructive algorithms, math	800	x30551
1878A	How Much Does Daytona Cost? greedy	800	x40732
1877C	Joyboard math, number theory	1200	x10414
1877A	Goals of Victory math	800	x20363
1876G	Clubstep binary search, brute force, data structures, greedy, trees	3500	x119
1876F	Indefinite Clownfish binary search, graphs	3500	x124
1876E	Ball-Stackable constructive algorithms, data structures, dp, trees	3300	x260
1876D	Lexichromatography combinatorics, dfs and similar, dsu, graphs, two pointers	2500	x833
1876C	Autosynthesis constructive algorithms, dfs and similar, graphs, greedy, sortings	2100	x2184
1876B	Effects of Anti Pimples combinatorics, number theory, sortings	1500	x7794
1876A	Helmets in Night Light greedy, sortings	1000	x15790
1875D	Jellyfish and Mex dp	1600	x7950
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x11161
1875A	Jellyfish and Undertale brute force, greedy	900	x23078
1874G	Jellyfish and Inscryption dp	3500	x79
1874F	Jellyfish and OEIS dp	3500	x191
1874E	Jellyfish and Hack dp, math	3000	x289
1874D	Jellyfish and Miku divide and conquer, dp, math, probabilities	2800	x675
1874C	Jellyfish and EVA dp, graphs, greedy, math, probabilities	2300	x1545
1874B	Jellyfish and Math bitmasks, brute force, dfs and similar, dp, graphs, shortest paths	2400	x1095
1874A	Jellyfish and Game brute force, games, greedy, implementation	1200	x16347
1873H	Mad City dfs and similar, dsu, games, graphs, shortest paths, trees	1700	x6854
1873G	ABBC or BACB constructive algorithms, greedy	1500	x12308
1873F	Money Trees binary search, greedy, math, two pointers	1300	x14542
1873E	Building an Aquarium binary search, sortings	1100	x24312
1873D	1D Eraser greedy, implementation, two pointers	800	x33692
1873C	Target Practice implementation, math	800	x37179
1873B	Good Kid brute force, greedy, math	800	x46057
1873A	Short Sort brute force, implementation	800	x50737
1872G	Replace With Product brute force, greedy, math	2000	x4084
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x5981
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x12572
1872D	Plus Minus Permutation math	1200	x21993