Problemset - Codeforces

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Codeforces Round (Div. 2)
7 days

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Problems

#	Name
1798E	Multitest Generator brute force, dp	2300	x1601
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x9867
1798C	Candy Store greedy, math, number theory	1700	x8193
1798B	Three Sevens brute force, data structures, greedy, implementation	1000	x16589
1798A	Showstopper greedy, implementation, sortings	800	x19690
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	x3956
1797C	Li Hua and Chess constructive algorithms, greedy, interactive	1600	x7633
1797B	Li Hua and Pattern constructive algorithms, greedy	1100	x15983
1797A	Li Hua and Maze constructive algorithms, flows, graphs, greedy, implementation	800	x17434
1796F	Strange Triples brute force, math, number theory	2900	x172
1796E	Colored Subgraphs dfs and similar, dp, games, greedy, trees	2500	x757
1796D	Maximum Subarray data structures, dp, greedy, two pointers	2000	x4337
1796C	Maximum Set binary search, math	1600	x10416
1796B	Asterisk-Minor Template implementation, strings	1000	x16563
1796A	Typical Interview Problem brute force, implementation, strings	800	x18855
1795G	Removal Sequences bitmasks, dfs and similar, graphs	2700	x684
1795F	Blocking Chips binary search, constructive algorithms, dfs and similar, greedy, trees	2400	x1111
1795E	Explosions? binary search, data structures, dp, greedy, math	2200	x2019
1795D	Triangle Coloring combinatorics, math	1600	x9144
1795C	Tea Tasting binary search, data structures, implementation	1500	x12447
1795B	Ideal Point brute force, geometry, greedy	900	x22063
1795A	Two Towers brute force, implementation, strings	800	x23610
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	x3589
1794C	Scoring Subsequences binary search, greedy, math, two pointers	1300	x13832
1794B	Not Dividing constructive algorithms, greedy, math	900	x22383
1794A	Prefix and Suffix Array strings	800	x17172
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	x1060
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x6137
1793C	Dora and Search constructive algorithms, data structures, two pointers	1200	x20323
1793B	Fedya and Array constructive algorithms, math	1100	x15816
1793A	Yet Another Promotion greedy, math	800	x18037
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	x6261
1792C	Min Max Sort binary search, brute force, greedy, math, two pointers	1500	x14115
1792B	Stand-up Comedian greedy, math	1200	x21368
1792A	GamingForces greedy, sortings	800	x28082
1791G2	Teleporters (Hard Version) binary search, greedy, sortings	1900	x4790
1791G1	Teleporters (Easy Version) greedy, sortings	1100	x22620
1791F	Range Update Point Query binary search, brute force, data structures	1500	x12426
1791E	Negatives and Positives dp, greedy, sortings	1100	x28381
1791D	Distinct Split brute force, greedy, strings	1000	x30600
1791C	Prepend and Append implementation, two pointers	800	x45306
1791B	Following Directions geometry, implementation	800	x44356
1791A	Codeforces Checking implementation, strings	800	x60438
1790G	Tokens on Graph constructive algorithms, dfs and similar, graphs, shortest paths	2300	x1122
1790F	Timofey and Black-White Tree brute force, dfs and similar, divide and conquer, graphs, greedy, math, shortest paths, trees	2100	x3353
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x15125
1790D	Matryoshkas data structures, greedy, sortings	1200	x20218
1790C	Premutation brute force, implementation, math	1000	x23856
1790B	Taisia and Dice greedy, greedy, math	800	x27388
1790A	Polycarp and the Day of Pi implementation, math, strings	800	x37028
1789F	Serval and Brain Power bitmasks, brute force, dp, greedy, implementation, strings	2700	x716
1789E	Serval and Music Game brute force, dp, implementation, math, number theory	2500	x818
1789D	Serval and Shift-Shift-Shift bitmasks, brute force, constructive algorithms, implementation	2200	x1677
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8568
1789B	Serval and Inversion Magic brute force, implementation, strings, two pointers	800	x16212
1789A	Serval and Mocha's Array brute force, math, number theory	800	x19111
1788F	XOR, Tree, and Queries bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees	2500	x843
1788E	Sum Over Zero data structures, dfs and similar, dp	2200	x2674
1788D	Moving Dots binary search, brute force, combinatorics, math, two pointers	2000	x3914
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x17230
1788B	Sum of Two Numbers constructive algorithms, greedy, implementation, math, probabilities	1100	x20037
1788A	One and Two brute force, implementation, math	800	x30756
1787I	Treasure Hunt data structures, divide and conquer, two pointers	3400	x218
1787H	Codeforces Scoreboard binary search, data structures, dp, geometry	3300	x232
1787G	Colorful Tree Again brute force, data structures, trees	3000	x435
1787F	Inverse Transformation constructive algorithms, implementation, math	2500	x685
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math	2100	x2347
1787D	Game on Axis combinatorics, dfs and similar, dsu, graphs, implementation	1900	x3398
1787C	Remove the Bracket dp, greedy, math	1600	x7084
1787B	Number Factorization greedy, math, number theory	1100	x13261
1787A	Exponential Equation constructive algorithms, math	800	x19206
1786B	Cake Assembly Line brute force, sortings	1300	x8970
1786A2	Alternating Deck (hard version) implementation	800	x11414
1786A1	Non-alternating Deck (easy version) implementation	800	x14044
1784F	Minimums or Medians	3400	x235
1784E	Infinite Game brute force, combinatorics, dp, games, probabilities	3100	x338
1784D	Wooden Spoon combinatorics, dp	2400	x1024
1784C	Monsters (hard version) data structures, greedy	2200	x1655
1784B	Letter Exchange constructive algorithms	1900	x3335
1784A	Monsters (easy version) brute force, greedy	1000	x15138
1783G	Weighed Tree Radius data structures, divide and conquer, implementation, trees	2800	x478
1783F	Double Sort II dfs and similar, flows, graph matchings, graphs	2500	x1018
1783E	Game of the Year brute force, data structures, math, number theory	2300	x2109
1783D	Different Arrays brute force, dp, implementation	2000	x4437
1783C	Yet Another Tournament binary search, greedy, sortings	1700	x9301
1783B	Matrix of Differences constructive algorithms, math	1100	x17772
1783A	Make it Beautiful constructive algorithms, math, sortings	800	x30236
1781H2	Window Signals (hard version)	3500	x91
1781H1	Window Signals (easy version)	3200	x116
1781G	Diverse Coloring constructive algorithms, trees	3200	x222
1781F	Bracket Insertion combinatorics, dp, math, trees	2700	x865
1781E	Rectangle Shrinking binary search, brute force, data structures, greedy, implementation, two pointers	2300	x1304
1781D	Many Perfect Squares brute force, math, number theory	1800	x5499