Problemset - Codeforces

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Problems

#	Name
1868D	Flower-like Pseudotree constructive algorithms, graphs, greedy, implementation, trees	3000	x294
1868C	Travel Plan combinatorics, dp, implementation, math, trees	2400	x1193
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2473
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x7232
1868A	Fill in the Matrix constructive algorithms, implementation	1300	x12320
1867F	Most Different Tree brute force, constructive algorithms, dfs and similar, greedy, hashing	2700	x428
1867E2	Salyg1n and Array (hard version) constructive algorithms, interactive	2200	x3296
1867E1	Salyg1n and Array (simple version) constructive algorithms, interactive, math	2000	x3875
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x6027
1867C	Salyg1n and the MEX Game constructive algorithms, data structures, games, greedy, interactive	1300	x11549
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x17133
1867A	green_gold_dog, array and permutation constructive algorithms, sortings	800	x20267
1866M	Mighty Rock Tower brute force, combinatorics, dp, math, probabilities	2400	x833
1866L	Lihmuf Balling binary search, brute force, math	2400	x737
1866K	Keen Tree Calculation binary search, data structures, dp, geometry, graphs, implementation, trees	2500	x457
1866J	Jackets and Packets dp	2800	x297
1866I	Imagination Castle dp, games, two pointers	2300	x789
1866H	Happy Sets combinatorics	2100	x1692
1866G	Grouped Carriages binary search, data structures, dp, flows, greedy	2100	x1784
1866F	Freak Joker Process binary search, data structures, sortings	3100	x137
1866E	Elevators of Tamem dp	2700	x434
1866D	Digital Wallet dp, greedy	2300	x1380
1866C	Completely Searching for Inversions dfs and similar, dp, graphs	1900	x3112
1866B	Battling with Numbers combinatorics, math, number theory	1400	x7986
1866A	Ambitious Kid math	800	x24977
1864I	Future Dominators graphs, greedy	3500	x93
1864H	Asterism Stream dp, math, matrices	3200	x301
1864G	Magic Square combinatorics, constructive algorithms, implementation	3100	x284
1864F	Exotic Queries data structures, implementation, sortings	2300	x1475
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x2729
1864D	Matrix Cascade brute force, constructive algorithms, data structures, dp, greedy, math	1700	x6975
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x13900
1864B	Swap and Reverse constructive algorithms, greedy, sortings, strings	1100	x15633
1864A	Increasing and Decreasing constructive algorithms, greedy, implementation, math	800	x20531
1863I	Redundant Routes constructive algorithms, dp, trees	3500	x86
1863H	Goldberg Machine 3 dp, trees	3500	x92
1863G	Swaps combinatorics, dp, graphs, math	2800	x663
1863F	Divide, XOR, and Conquer bitmasks, dp, math	2600	x1179
1863E	Speedrun brute force, dfs and similar, dp, graphs, greedy, math, sortings, two pointers	2100	x2865
1863D	Two-Colored Dominoes constructive algorithms, greedy	1400	x9779
1863C	MEX Repetition implementation, math	1100	x14390
1863B	Split Sort greedy, math, sortings	1100	x15558
1863A	Channel greedy, implementation	800	x18077
1862G	The Great Equalizer binary search, data structures, math, sortings	2000	x2975
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x6542
1862E	Kolya and Movie Theatre constructive algorithms, data structures, greedy	1600	x11169
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x17795
1862C	Flower City Fence binary search, data structures, implementation, sortings	1100	x21291
1862B	Sequence Game constructive algorithms	800	x34474
1862A	Gift Carpet dp, greedy, implementation, strings	800	x33173
1861F	Four Suits binary search, bitmasks, flows, greedy	3200	x213
1861E	Non-Intersecting Subpermutations combinatorics, dp, implementation, math	2300	x1784
1861D	Sorting By Multiplication dp, greedy	1800	x7025
1861C	Queries for the Array data structures, dfs and similar, implementation, strings, trees	1600	x10479
1861B	Two Binary Strings constructive algorithms, dp, greedy	1000	x21939
1861A	Prime Deletion constructive algorithms, math	800	x24241
1860F	Evaluate RBS data structures, geometry, implementation, math, sortings	2900	x285
1860E	Fast Travel Text Editor data structures, dfs and similar, graphs, shortest paths	2400	x1504
1860D	Balanced String dp	2200	x3107
1860C	Game on Permutation data structures, dp, games, greedy	1400	x13806
1860B	Fancy Coins binary search, brute force, greedy, math	1200	x17412
1860A	Not a Substring constructive algorithms, strings	900	x22172
1859F	Teleportation in Byteland data structures, dfs and similar, divide and conquer, graphs, shortest paths, trees	3200	x415
1859E	Maximum Monogonosity brute force, dp, math	2500	x1846
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x7230
1859C	Another Permutation Problem brute force, dp, greedy, math	1200	x17359
1859B	Olya and Game with Arrays constructive algorithms, greedy, math, sortings	1000	x29084
1859A	United We Stand constructive algorithms, math, number theory	800	x34823
1858E2	Rollbacks (Hard Version) data structures, interactive, trees	2600	x1093
1858E1	Rollbacks (Easy Version) brute force, data structures, dfs and similar, trees	2500	x1366
1858D	Trees and Segments brute force, data structures, dp, greedy, two pointers	2200	x2895
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x23632
1858B	The Walkway brute force, dp, greedy, math, number theory	1500	x11670
1858A	Buttons games, greedy, math	800	x41579
1857G	Counting Graphs combinatorics, divide and conquer, dsu, graphs, greedy, sortings, trees	2000	x4656
1857F	Sum and Product binary search, data structures, math	1600	x12179
1857E	Power of Points math, sortings	1500	x12959
1857D	Strong Vertices math, sortings, trees	1300	x20760
1857C	Assembly via Minimums greedy, sortings	1200	x27996
1857B	Maximum Rounding greedy, implementation, math	1100	x23392
1857A	Array Coloring greedy, math	800	x51544
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1463
1856E1	PermuTree (easy version) dfs and similar, dp, trees	1800	x5539
1856D	More Wrong divide and conquer, interactive	2100	x3349
1856C	To Become Max binary search, brute force, data structures, dp	1600	x13132
1856B	Good Arrays implementation, math	900	x25013
1856A	Tales of a Sort implementation	800	x26884
1855B	Longest Divisors Interval brute force, combinatorics, greedy, math, number theory	900	x28701
1855A	Dalton the Teacher greedy, math	800	x28435
1854F	Mark and Spaceship brute force, dp	3500	x127
1854E	Game Bundles brute force, constructive algorithms, dp, greedy, math	3000	x453
1854D	Michael and Hotel binary search, interactive, trees	3000	x568
1854C	Expected Destruction combinatorics, dp, math, probabilities	2500	x1569
1854B	Earn or Unlock bitmasks, brute force, dp	2200	x3669
1854A2	Dual (Hard Version) constructive algorithms, math	1900	x7163
1854A1	Dual (Easy Version) constructive algorithms, math	1400	x14542
1853B	Fibonaccharsis binary search, brute force, math	1200	x17941
1853A	Desorting brute force, greedy, math	800	x34590
1852F	Panda Meetups data structures, dp, flows	3500	x113
1852E	Rivalries constructive algorithms, data structures, greedy	3400	x176