Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round (Div. 2)
6 days

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1884E	Hard Design greedy, implementation, math	2800	x271
1884D	Counting Rhyme dp, math, number theory	2100	x2971
1884C	Medium Design brute force, data structures, dp, greedy, sortings	1700	x5690
1884B	Haunted House binary search, greedy, math, two pointers	1100	x12101
1884A	Simple Design brute force, greedy, math	800	x16863
1883G2	Dances (Hard Version) binary search, greedy, sortings, two pointers	1900	x5055
1883G1	Dances (Easy version) binary search, greedy, two pointers	1400	x9819
1883F	You Are So Beautiful data structures	1400	x8725
1883E	Look Back bitmasks, greedy	1700	x7443
1883D	In Love data structures, greedy	1500	x10583
1883C	Raspberries dp, math	1000	x24367
1883B	Chemistry strings	900	x28755
1883A	Morning math	800	x24663
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	x11702
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x14807
1882A	Increasing Sequence greedy	800	x24802
1881G	Anya and the Mysterious String binary search, data structures	2000	x2230
1881F	Minimum Maximum Distance dfs and similar, dp, graphs, shortest paths, trees	1700	x6293
1881E	Block Sequence dp	1500	x12504
1881D	Divide and Equalize math, number theory	1300	x15514
1881C	Perfect Square brute force, implementation	1200	x16316
1881B	Three Threadlets math	900	x24365
1881A	Don't Try to Count brute force, strings	800	x28901
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	x6925
1879C	Make it Alternating combinatorics, dp, greedy	1300	x15660
1879B	Chips on the Board constructive algorithms, greedy	900	x21689
1879A	Rigged! greedy	800	x22652
1878G	wxhtzdy ORO Tree binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees	2300	x1128
1878F	Vasilije Loves Number Theory brute force, math, number theory	1900	x3918
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x11734
1878D	Reverse Madness data structures, greedy	1600	x7877
1878C	Vasilije in Cacak math	900	x30031
1878B	Aleksa and Stack constructive algorithms, math	800	x30563
1878A	How Much Does Daytona Cost? greedy	800	x40766
1877C	Joyboard math, number theory	1200	x10419
1877A	Goals of Victory math	800	x20394
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	x834
1876C	Autosynthesis constructive algorithms, dfs and similar, graphs, greedy, sortings	2100	x2185
1876B	Effects of Anti Pimples combinatorics, number theory, sortings	1500	x7803
1876A	Helmets in Night Light greedy, sortings	1000	x15817
1875D	Jellyfish and Mex dp	1600	x7961
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x11165
1875A	Jellyfish and Undertale brute force, greedy	900	x23099
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	x1097
1874A	Jellyfish and Game brute force, games, greedy, implementation	1200	x16359
1873H	Mad City dfs and similar, dsu, games, graphs, shortest paths, trees	1700	x6858
1873G	ABBC or BACB constructive algorithms, greedy	1500	x12319
1873F	Money Trees binary search, greedy, math, two pointers	1300	x14552
1873E	Building an Aquarium binary search, sortings	1100	x24329
1873D	1D Eraser greedy, implementation, two pointers	800	x33702
1873C	Target Practice implementation, math	800	x37211
1873B	Good Kid brute force, greedy, math	800	x46089
1873A	Short Sort brute force, implementation	800	x50795
1872G	Replace With Product brute force, greedy, math	2000	x4084
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x5983
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x12579
1872D	Plus Minus Permutation math	1200	x22013
1872C	Non-coprime Split math, number theory	1100	x22567
1872B	The Corridor or There and Back Again greedy, implementation	900	x27147
1872A	Two Vessels brute force, greedy, math	800	x38041
1870H	Standard Graph Problem data structures, graphs, greedy, trees	3500	x80
1870G	MEXanization data structures	3300	x206
1870F	Lazy Numbers binary search, math	2900	x469
1870E	Another MEX Problem bitmasks, brute force, dp, shortest paths	2300	x2258
1870D	Prefix Purchase greedy, implementation, sortings	1800	x6603
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x11046
1870B	Friendly Arrays bitmasks, greedy, math	1200	x13718
1870A	MEXanized Array constructive algorithms, greedy, math	800	x18737
1869B	2D Traveling geometry, math, shortest paths, sortings	1100	x15094
1869A	Make It Zero constructive algorithms	900	x19715
1868F	LIS? data structures, greedy, implementation	3500	x71
1868E	Min-Sum-Max constructive algorithms, dp, greedy	3500	x77
1868D	Flower-like Pseudotree constructive algorithms, graphs, greedy, implementation, trees	3000	x257
1868C	Travel Plan combinatorics, dp, implementation, math, trees	2400	x1106
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2320
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x6670
1868A	Fill in the Matrix constructive algorithms, implementation	1300	x11522
1867F	Most Different Tree brute force, constructive algorithms, dfs and similar, greedy, hashing	2700	x406
1867E2	Salyg1n and Array (hard version) constructive algorithms, interactive	2200	x3053
1867E1	Salyg1n and Array (simple version) constructive algorithms, interactive, math	2000	x3598
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x5512
1867C	Salyg1n and the MEX Game constructive algorithms, data structures, games, greedy, interactive	1300	x10821
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x16265
1867A	green_gold_dog, array and permutation constructive algorithms, sortings	800	x19571
1866M	Mighty Rock Tower brute force, combinatorics, dp, math, probabilities	2400	x703
1866L	Lihmuf Balling binary search, brute force, math	2400	x664
1866K	Keen Tree Calculation binary search, data structures, dp, geometry, graphs, implementation, trees	2500	x416