Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1805C	Place for a Selfie binary search, data structures, geometry, math	1400	x12550
1805B	The String Has a Target greedy, strings	800	x18548
1805A	We Need the Zero bitmasks, brute force	800	x23447
1804H	Code Lock bitmasks, dp	3300	x185
1804G	Flow Control data structures, dsu, implementation	3500	x202
1804F	Approximate Diameter binary search, divide and conquer, graphs, shortest paths	2700	x910
1804E	Routing bitmasks, brute force, dfs and similar, dp, graphs	2400	x1449
1804D	Accommodation brute force, dp, greedy, implementation	2000	x4639
1804C	Pull Your Luck brute force, greedy, math, number theory	1500	x12105
1804B	Vaccination greedy, implementation	1000	x14253
1804A	Lame King greedy, math	800	x17934
1802B	Settlement of Guinea Pigs greedy, implementation, math	1000	x13313
1802A	Likes greedy, implementation	800	x15778
1801G	A task for substrings data structures, string suffix structures, strings	3400	x376
1801F	Another n-dimensional chocolate bar dp, math, meet-in-the-middle, number theory	2700	x586
1801E	Gasoline prices data structures, divide and conquer, dsu, hashing, trees	3000	x450
1801D	The way home binary search, data structures, dp, graphs, greedy, shortest paths, sortings	2100	x2209
1801C	Music Festival binary search, data structures, dp, greedy, sortings	1900	x3429
1801B	Buying gifts data structures, greedy, sortings	1800	x6224
1801A	The Very Beautiful Blanket bitmasks, constructive algorithms	1600	x8550
1800G	Symmetree dfs and similar, hashing, implementation, trees	2200	x2067
1800F	Dasha and Nightmares bitmasks, hashing, meet-in-the-middle, strings	1900	x3884
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x12785
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12805
1800D	Remove Two Letters data structures, greedy, hashing, strings	1200	x23530
1800C2	Powering the Hero (hard version) data structures, greedy	1100	x22438
1800C1	Powering the Hero (easy version) data structures, greedy	1000	x23505
1800B	Count the Number of Pairs greedy, strings	1000	x25115
1800A	Is It a Cat? implementation, strings	800	x31424
1799H	Tree Cutting bitmasks, dfs and similar, dp	3200	x281
1799G	Count Voting combinatorics, dp, math	2600	x769
1799F	Halve or Subtract binary search, brute force, dp, greedy, sortings	2700	x833
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1200
1799D2	Hot Start Up (hard version) data structures, dp	2100	x2440
1799D1	Hot Start Up (easy version) dp	1900	x4460
1799C	Double Lexicographically Minimum greedy, strings	1700	x5808
1799B	Equalize by Divide brute force, constructive algorithms, greedy, math	1200	x11343
1799A	Recent Actions data structures, greedy, implementation, math	800	x11578
1798F	Gifts from Grandfather Ahmed dp, math, number theory	2500	x495
1798E	Multitest Generator brute force, dp	2300	x1599
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x9830
1798C	Candy Store greedy, math, number theory	1700	x8179
1798B	Three Sevens brute force, data structures, greedy, implementation	1000	x16566
1798A	Showstopper greedy, implementation, sortings	800	x19671
1797F	Li Hua and Path data structures, dfs and similar, divide and conquer, dsu, trees	3000	x352
1797E	Li Hua and Array brute force, data structures, dsu, math, number theory, two pointers	2300	x1270
1797D	Li Hua and Tree brute force, data structures, dfs and similar, dp, implementation, trees	1900	x3950
1797C	Li Hua and Chess constructive algorithms, greedy, interactive	1600	x7620
1797B	Li Hua and Pattern constructive algorithms, greedy	1100	x15950
1797A	Li Hua and Maze constructive algorithms, flows, graphs, greedy, implementation	800	x17424
1796F	Strange Triples brute force, math, number theory	2900	x172
1796E	Colored Subgraphs dfs and similar, dp, games, greedy, trees	2500	x754
1796D	Maximum Subarray data structures, dp, greedy, two pointers	2000	x4308
1796C	Maximum Set binary search, math	1600	x10402
1796B	Asterisk-Minor Template implementation, strings	1000	x16549
1796A	Typical Interview Problem brute force, implementation, strings	800	x18845
1795G	Removal Sequences bitmasks, dfs and similar, graphs	2700	x683
1795F	Blocking Chips binary search, constructive algorithms, dfs and similar, greedy, trees	2400	x1110
1795E	Explosions? binary search, data structures, dp, greedy, math	2200	x2015
1795D	Triangle Coloring combinatorics, math	1600	x9122
1795C	Tea Tasting binary search, data structures, implementation	1500	x12416
1795B	Ideal Point brute force, geometry, greedy	900	x22051
1795A	Two Towers brute force, implementation, strings	800	x23597
1794E	Labeling the Tree with Distances data structures, dp, greedy, hashing, implementation, trees	2400	x1090
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3583
1794C	Scoring Subsequences binary search, greedy, math, two pointers	1300	x13792
1794B	Not Dividing constructive algorithms, greedy, math	900	x22291
1794A	Prefix and Suffix Array strings	800	x17160
1793F	Rebrending brute force, data structures, divide and conquer, implementation	2600	x1378
1793E	Velepin and Marketing binary search, data structures, dp, greedy, sortings, two pointers	2600	x1059
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x6128
1793C	Dora and Search constructive algorithms, data structures, two pointers	1200	x20255
1793B	Fedya and Array constructive algorithms, math	1100	x15792
1793A	Yet Another Promotion greedy, math	800	x18029
1792F2	Graph Coloring (hard version) brute force, combinatorics, divide and conquer, dp, fft, graphs	2900	x390
1792F1	Graph Coloring (easy version) combinatorics, dp, graphs	2700	x720
1792E	Divisors and Table brute force, dfs and similar, dp, number theory	2400	x1382
1792D	Fixed Prefix Permutations binary search, bitmasks, data structures, hashing, math, sortings	1700	x6255
1792C	Min Max Sort binary search, brute force, greedy, math, two pointers	1500	x14098
1792B	Stand-up Comedian greedy, math	1200	x21332
1792A	GamingForces greedy, sortings	800	x28049
1791G2	Teleporters (Hard Version) binary search, greedy, sortings	1900	x4780
1791G1	Teleporters (Easy Version) greedy, sortings	1100	x22549
1791F	Range Update Point Query binary search, brute force, data structures	1500	x12399
1791E	Negatives and Positives dp, greedy, sortings	1100	x28301
1791D	Distinct Split brute force, greedy, strings	1000	x30490
1791C	Prepend and Append implementation, two pointers	800	x45181
1791B	Following Directions geometry, implementation	800	x44220
1791A	Codeforces Checking implementation, strings	800	x60267
1790G	Tokens on Graph constructive algorithms, dfs and similar, graphs, shortest paths	2300	x1121
1790F	Timofey and Black-White Tree brute force, dfs and similar, divide and conquer, graphs, greedy, math, shortest paths, trees	2100	x3347
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x15106
1790D	Matryoshkas data structures, greedy, sortings	1200	x20139
1790C	Premutation brute force, implementation, math	1000	x23839
1790B	Taisia and Dice greedy, greedy, math	800	x27374
1790A	Polycarp and the Day of Pi implementation, math, strings	800	x36994
1789F	Serval and Brain Power bitmasks, brute force, dp, greedy, implementation, strings	2700	x715
1789E	Serval and Music Game brute force, dp, implementation, math, number theory	2500	x817
1789D	Serval and Shift-Shift-Shift bitmasks, brute force, constructive algorithms, implementation	2200	x1675
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8551