Problemset - Codeforces

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Codeforces Round (Div. 2)
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brute force

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Problems

#	Name
2097A	Sports Betting 2-sat, brute force, math, sortings	1400	x9099
2095C	Would It Be Unrated? *special problem, binary search, brute force		x3812
2094H	La Vaca Saturno Saturnita binary search, brute force, math, number theory	1900	x3990
2094B	Bobritto Bandito brute force, constructive algorithms	800	x34275
2093F	Hackers and Neural Networks bitmasks, brute force, greedy	1800	x6106
2093E	Min Max MEX binary search, brute force, greedy	1500	x14180
2092F	Andryusha and CCB brute force, constructive algorithms, greedy, math, number theory, strings	2900	x452
2092D	Mishkin Energizer brute force, constructive algorithms, greedy, implementation, strings	1800	x7089
2092B	Lady Bug brute force, constructive algorithms, implementation, math	1000	x25706
2091G	Gleb and Boating brute force, constructive algorithms, data structures, dp, graphs, greedy, math, number theory, shortest paths	2300	x1675
2091F	Igor and Mountain binary search, brute force, dp	1800	x6440
2091E	Interesting Ratio brute force, math, number theory, two pointers	1300	x20521
2090B	Pushing Balls brute force, dp, implementation	1000	x17059
2086F	Online Palindrome brute force, constructive algorithms, interactive	3000	x154
2086E	Zebra-like Numbers bitmasks, brute force, constructive algorithms, dfs and similar, dp, greedy, math	2400	x1737
2086D	Even String brute force, combinatorics, dp, math, strings	1700	x8777
2086B	Large Array and Segments binary search, brute force, greedy	1100	x19567
2084D	Arcology On Permafrost binary search, brute force, constructive algorithms, greedy, math	1600	x9277
2082B	Floor or Ceil brute force, greedy	1600	x8790
2077D	Maximum Polygon brute force, data structures, greedy, implementation, math	3100	x399
2075F	Beautiful Sequence Returns binary search, brute force, data structures, implementation	3000	x554
2075D	Equalization bitmasks, brute force, dp, graphs, math	2000	x6191
2074D	Counting Points brute force, data structures, geometry, implementation, two pointers	1400	x12525
2074C	XOR and Triangle bitmasks, brute force, geometry, greedy, probabilities	1100	x22651
2072G	I've Been Flipping Numbers for 300 Years and Calculated the Sum binary search, brute force, combinatorics, divide and conquer, math, number theory	2200	x2227
2072E	Do You Love Your Hero and His Two-Hit Multi-Target Attacks? binary search, brute force, constructive algorithms, dp, geometry, greedy, math	1500	x12846
2072D	For Wizards, the Exam Is Easy, but I Couldn't Handle It brute force, greedy, implementation	1300	x18232
2071D2	Infinite Sequence (Hard Version) bitmasks, brute force, constructive algorithms, data structures, dp, implementation, math	2500	x1147
2071D1	Infinite Sequence (Easy Version) bitmasks, brute force, dp, implementation, math	1800	x6955
2071B	Perfecto brute force, constructive algorithms, greedy, math	1100	x21529
2070B	Robot Program brute force, implementation, math	1100	x20222
2070A	FizzBuzz Remixed brute force, math	800	x26918
2068F	Mascot Naming brute force, greedy, implementation, strings	1900	x1601
2067C	Devyatkino brute force, dfs and similar, greedy, math	1500	x13227
2067B	Two Large Bags brute force, dp, greedy, sortings	1200	x19707
2067A	Adjacent Digit Sums brute force, constructive algorithms, math	800	x26139
2065A	Skibidus and Amog'u brute force, constructive algorithms, greedy, implementation, strings	800	x57932
2064D	Eating binary search, bitmasks, brute force, data structures, dp, greedy, trees, two pointers	1900	x6109
2064C	Remove the Ends brute force, constructive algorithms, dp, greedy	1300	x18439
2063D	Game With Triangles binary search, brute force, data structures, geometry, greedy, implementation, math, ternary search, two pointers	2000	x5247
2063C	Remove Exactly Two brute force, data structures, dfs and similar, dp, graphs, greedy, sortings, trees	1600	x15583
2062C	Cirno and Operations brute force, math	1200	x18967
2061E	Kevin and And bitmasks, brute force, dp, greedy, math, sortings	2000	x4146
2060A	Fibonacciness brute force	800	x42165
2059E2	Stop Gaming (Hard Version) brute force, constructive algorithms, data structures, hashing, strings	2900	x362
2059E1	Stop Gaming (Easy Version) brute force, constructive algorithms, greedy, hashing, strings	2500	x917
2059C	Customer Service brute force, constructive algorithms, graph matchings, greedy, math, sortings	1600	x13027
2059B	Cost of the Array brute force, constructive algorithms, greedy, math	1300	x19347
2057E1	Another Exercise on Graphs (Easy Version) binary search, brute force, dp, dsu, graphs, shortest paths, sortings	2300	x2820
2056F2	Xor of Median (Hard Version) bitmasks, brute force, combinatorics, dp, math	3000	x377
2056F1	Xor of Median (Easy Version) bitmasks, brute force, combinatorics, dp, math	2700	x469
2056D	Unique Median binary search, brute force, combinatorics, data structures, divide and conquer, dp	2200	x3781
2056C	Palindromic Subsequences brute force, constructive algorithms, math	1200	x20023
2056B	Find the Permutation brute force, dfs and similar, graphs, implementation, sortings	1300	x18401
2055F	Cosmic Divide brute force, geometry, hashing, math, strings	3200	x92
2055E	Haystacks brute force, constructive algorithms, data structures, greedy, sortings	2800	x517
2055C	The Trail brute force, constructive algorithms, greedy, math, two pointers	1400	x17852
2053G	Naive String Splits binary search, brute force, greedy, hashing, math, number theory, strings	3400	x264
2053F	Earnest Matrix Complement brute force, data structures, dp, greedy, implementation, math	2600	x983
2053B	Outstanding Impressionist binary search, brute force, data structures, greedy	1200	x17420
2052E	Expression Correction brute force, expression parsing, strings	1900	x1587
2052D	DAG Serialization brute force, graphs	2100	x1274
2051F	Joker brute force, greedy, implementation, math	2000	x4185
2051E	Best Price binary search, brute force, data structures, greedy, sortings	1600	x12551
2050D	Digital string maximization brute force, greedy, math, strings	1300	x19787
2050C	Uninteresting Number brute force, dp, math	1200	x26127
2050B	Transfusion brute force, greedy, math	1100	x28099
2049F	MEX OR Mania bitmasks, brute force, data structures, dsu, implementation	2700	x615
2049E	Broken Queries binary search, bitmasks, brute force, constructive algorithms, implementation, interactive	2400	x1668
2049D	Shift + Esc brute force, dp	1900	x6286
2049C	MEX Cycle brute force, constructive algorithms, greedy, implementation	1500	x14134
2049B	pspspsps brute force, constructive algorithms, graph matchings, implementation	1300	x19459
2048G	Kevin and Matrices brute force, combinatorics, dp, math	2800	x807
2048F	Kevin and Math Class brute force, data structures, divide and conquer, dp, implementation, math, trees	2500	x1379
2048D	Kevin and Competition Memories binary search, brute force, data structures, greedy, sortings, two pointers	1600	x8652
2048C	Kevin and Binary Strings bitmasks, brute force, greedy, implementation, strings	1200	x15606
2048A	Kevin and Combination Lock brute force, greedy, implementation, math, number theory	800	x23150
2047B	Replace Character brute force, combinatorics, greedy, strings	900	x19946
2045M	Mirror Maze brute force, dfs and similar, graphs, implementation	1800	x2416
2045A	Scrambled Scrabble brute force, greedy	1700	x2762
2044F	Easy Demon Problem binary search, brute force, data structures, math, number theory	1900	x6604
2044A	Easy Problem brute force, math	800	x64631
2043G	Problem with Queries brute force, data structures, implementation	3000	x357
2043F	Nim bitmasks, brute force, combinatorics, dp, games, greedy, implementation, shortest paths	2700	x935
2043E	Matrix Transformation bitmasks, brute force, data structures, dfs and similar, graphs, greedy, implementation	2300	x1893
2043D	Problem about GCD brute force, flows, math, number theory	1800	x8049
2043C	Sums on Segments binary search, brute force, data structures, dp, greedy, math	1600	x11706
2043A	Coin Transformation brute force, math	800	x27393
2042E	Vertex Pairs binary search, brute force, data structures, dfs and similar, divide and conquer, greedy, implementation, trees	2900	x553
2041K	Trophic Balance Species binary search, brute force, dfs and similar, graphs	3100	x126
2041F	Segmentation Folds brute force, dfs and similar, number theory	2400	x530
2041D	Drunken Maze brute force, dfs and similar, graphs, shortest paths	1700	x5675
2041B	Bowling Frame binary search, brute force, math	1200	x7563
2040D	Non Prime Tree brute force, constructive algorithms, dfs and similar, greedy, number theory, trees, two pointers	1900	x6137
2039C2	Shohag Loves XOR (Hard Version) bitmasks, brute force, math, number theory	1800	x5164
2039C1	Shohag Loves XOR (Easy Version) bitmasks, brute force, math, number theory	1200	x14029
2038L	Bridge Renovation brute force, dp, greedy, math, two pointers	1400	x8521
2038K	Grid Walk brute force, dp, greedy, math, number theory	2100	x1877
2038B	Make It Equal binary search, brute force, greedy, math	2100	x2021
2037B	Intercepted Inputs brute force, implementation	800	x26000

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