Problemset - Codeforces

Problems

#	Name
1801C	Music Festival binary search, data structures, dp, greedy, sortings	1900	x3511
1801B	Buying gifts data structures, greedy, sortings	1800	x6384
1801A	The Very Beautiful Blanket bitmasks, constructive algorithms	1600	x8673
1800G	Symmetree dfs and similar, hashing, implementation, trees	2200	x2129
1800F	Dasha and Nightmares bitmasks, hashing, meet-in-the-middle, strings	1900	x3966
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x13022
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x13004
1800D	Remove Two Letters data structures, greedy, hashing, strings	1200	x24085
1800C2	Powering the Hero (hard version) data structures, greedy	1100	x22954
1800C1	Powering the Hero (easy version) data structures, greedy	1000	x23989
1800B	Count the Number of Pairs greedy, strings	1000	x25436
1800A	Is It a Cat? implementation, strings	800	x31836
1799H	Tree Cutting bitmasks, dfs and similar, dp	3200	x286
1799G	Count Voting combinatorics, dp, math	2600	x797
1799F	Halve or Subtract binary search, brute force, dp, greedy, sortings	2700	x852
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1223
1799D2	Hot Start Up (hard version) data structures, dp	2100	x2541
1799D1	Hot Start Up (easy version) dp	1900	x4602
1799C	Double Lexicographically Minimum greedy, strings	1700	x5933
1799B	Equalize by Divide brute force, constructive algorithms, greedy, math	1200	x11456
1799A	Recent Actions data structures, greedy, implementation, math	800	x11641
1798F	Gifts from Grandfather Ahmed dp, math, number theory	2500	x505
1798E	Multitest Generator brute force, dp	2300	x1632
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x10195
1798C	Candy Store greedy, math, number theory	1700	x8290
1798B	Three Sevens brute force, data structures, greedy, implementation	1000	x16795
1798A	Showstopper greedy, implementation, sortings	800	x19953
1797F	Li Hua and Path data structures, dfs and similar, divide and conquer, dsu, trees	3000	x361
1797E	Li Hua and Array brute force, data structures, dsu, math, number theory, two pointers	2300	x1306
1797D	Li Hua and Tree brute force, data structures, dfs and similar, dp, implementation, trees	1900	x4033
1797C	Li Hua and Chess constructive algorithms, greedy, interactive	1600	x7770
1797B	Li Hua and Pattern constructive algorithms, greedy	1100	x16367
1797A	Li Hua and Maze constructive algorithms, flows, graphs, greedy, implementation	800	x17596
1796F	Strange Triples brute force, math, number theory	2900	x175
1796E	Colored Subgraphs dfs and similar, dp, games, greedy, trees	2500	x774
1796D	Maximum Subarray data structures, dp, greedy, two pointers	2000	x4431
1796C	Maximum Set binary search, math	1600	x10571
1796B	Asterisk-Minor Template implementation, strings	1000	x16652
1796A	Typical Interview Problem brute force, implementation, strings	800	x18903
1795G	Removal Sequences bitmasks, dfs and similar, graphs	2700	x690
1795F	Blocking Chips binary search, constructive algorithms, dfs and similar, greedy, trees	2400	x1131
1795E	Explosions? binary search, data structures, dp, greedy, math	2200	x2071
1795D	Triangle Coloring combinatorics, math	1600	x9325
1795C	Tea Tasting binary search, data structures, implementation	1500	x12789
1795B	Ideal Point brute force, geometry, greedy	900	x22197
1795A	Two Towers brute force, implementation, strings	800	x23704
1794E	Labeling the Tree with Distances data structures, dp, greedy, hashing, implementation, trees	2400	x1118
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3628
1794C	Scoring Subsequences binary search, greedy, math, two pointers	1300	x14131
1794B	Not Dividing constructive algorithms, greedy, math	900	x23176
1794A	Prefix and Suffix Array strings	800	x17249
1793F	Rebrending brute force, data structures, divide and conquer, implementation	2600	x1411
1793E	Velepin and Marketing binary search, data structures, dp, greedy, sortings, two pointers	2600	x1104
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x6285
1793C	Dora and Search constructive algorithms, data structures, two pointers	1200	x21021
1793B	Fedya and Array constructive algorithms, math	1100	x15927
1793A	Yet Another Promotion greedy, math	800	x18124
1792F2	Graph Coloring (hard version) brute force, combinatorics, divide and conquer, dp, fft, graphs	2900	x399
1792F1	Graph Coloring (easy version) combinatorics, dp, graphs	2700	x743
1792E	Divisors and Table brute force, dfs and similar, dp, number theory	2400	x1401
1792D	Fixed Prefix Permutations binary search, bitmasks, data structures, hashing, math, sortings	1700	x6332
1792C	Min Max Sort binary search, brute force, greedy, math, two pointers	1500	x14311
1792B	Stand-up Comedian greedy, math	1200	x21612
1792A	GamingForces greedy, sortings	800	x28352
1791G2	Teleporters (Hard Version) binary search, greedy, sortings	1900	x4845
1791G1	Teleporters (Easy Version) greedy, sortings	1100	x23249
1791F	Range Update Point Query binary search, brute force, data structures	1500	x12628
1791E	Negatives and Positives dp, greedy, sortings	1100	x29142
1791D	Distinct Split brute force, greedy, strings	1000	x31577
1791C	Prepend and Append implementation, two pointers	800	x46920
1791B	Following Directions geometry, implementation	800	x45066
1791A	Codeforces Checking implementation, strings	800	x62223
1790G	Tokens on Graph constructive algorithms, dfs and similar, graphs, shortest paths	2300	x1136
1790F	Timofey and Black-White Tree brute force, dfs and similar, divide and conquer, graphs, greedy, math, shortest paths, trees	2100	x3394
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x15338
1790D	Matryoshkas data structures, greedy, sortings	1200	x20772
1790C	Premutation brute force, implementation, math	1000	x24208
1790B	Taisia and Dice greedy, greedy, math	800	x27581
1790A	Polycarp and the Day of Pi implementation, math, strings	800	x37393
1789F	Serval and Brain Power bitmasks, brute force, dp, greedy, implementation, strings	2700	x728
1789E	Serval and Music Game brute force, dp, implementation, math, number theory	2500	x825
1789D	Serval and Shift-Shift-Shift bitmasks, brute force, constructive algorithms, implementation	2200	x1699
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8660
1789B	Serval and Inversion Magic brute force, implementation, strings, two pointers	800	x16287
1789A	Serval and Mocha's Array brute force, math, number theory	800	x19605
1788F	XOR, Tree, and Queries bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees	2500	x873
1788E	Sum Over Zero data structures, dfs and similar, dp	2200	x2724
1788D	Moving Dots binary search, brute force, combinatorics, math, two pointers	2000	x3970
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x17460
1788B	Sum of Two Numbers constructive algorithms, greedy, implementation, math, probabilities	1100	x20214
1788A	One and Two brute force, implementation, math	800	x31782
1787I	Treasure Hunt data structures, divide and conquer, two pointers	3400	x223
1787H	Codeforces Scoreboard binary search, data structures, dp, geometry	3300	x237
1787G	Colorful Tree Again brute force, data structures, trees	3000	x445
1787F	Inverse Transformation constructive algorithms, implementation, math	2500	x690
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math	2100	x2375
1787D	Game on Axis combinatorics, dfs and similar, dsu, graphs, implementation	1900	x3430
1787C	Remove the Bracket dp, greedy, math	1600	x7166
1787B	Number Factorization greedy, math, number theory	1100	x13381
1787A	Exponential Equation constructive algorithms, math	800	x19285