Problemset - Codeforces

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Ethflow Round 1 (Codeforces Round, Div. 1 + Div. 2)
2 days
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Problems

#	Name
1488A	From Zero To Y *special problem, math	900	x1514
1487G	String Counting combinatorics, dp, fft, math	2700	x606
1487F	Ones dp, greedy, shortest paths	2900	x395
1487E	Cheap Dinner brute force, data structures, graphs, greedy, implementation, sortings, two pointers	2000	x4629
1487D	Pythagorean Triples binary search, brute force, math, number theory	1500	x18647
1487C	Minimum Ties brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation, math	1500	x14412
1487B	Cat Cycle math, number theory	1200	x21991
1487A	Arena implementation, sortings	800	x26721
1486F	Pairs of Paths combinatorics, data structures, dfs and similar, dp, trees	2600	x696
1486E	Paired Payment binary search, brute force, constructive algorithms, dp, flows, graphs, shortest paths	2200	x3022
1486D	Max Median binary search, data structures, dp	2100	x7657
1486C2	Guessing the Greatest (hard version) binary search, interactive	1900	x8792
1486C1	Guessing the Greatest (easy version) binary search, interactive	1600	x12738
1486B	Eastern Exhibition binary search, geometry, shortest paths, sortings	1500	x16551
1486A	Shifting Stacks greedy, implementation	900	x25700
1485F	Copy or Prefix Sum combinatorics, data structures, dp, sortings	2400	x2024
1485E	Move and Swap dfs and similar, dp, greedy, trees	2500	x1373
1485D	Multiples and Power Differences constructive algorithms, graphs, math, number theory	2200	x5261
1485C	Floor and Mod binary search, brute force, math, number theory	1700	x10166
1485B	Replace and Keep Sorted dp, implementation, math	1200	x17218
1485A	Add and Divide brute force, greedy, math, number theory	1000	x23580
1482H	Exam data structures, string suffix structures, trees	3400	x498
1482G	Vabank binary search, interactive	3200	x304
1482F	Useful Edges graphs, shortest paths	2400	x1576
1482E	Skyline Photo data structures, divide and conquer, dp	2100	x3327
1482D	Playlist data structures, dsu, implementation, shortest paths	1900	x3914
1482C	Basic Diplomacy brute force, constructive algorithms, greedy, implementation	1600	x9534
1482B	Restore Modulo implementation, math	1500	x9287
1482A	Prison Break math	800	x20604
1481F	AB Tree dp, greedy, trees	3100	x544
1481E	Sorting Books data structures, dp, greedy	2500	x2170
1481D	AB Graph brute force, constructive algorithms, graphs, greedy, implementation	2000	x4618
1481C	Fence Painting brute force, constructive algorithms, greedy	1600	x11808
1481B	New Colony brute force, greedy, implementation	1100	x19391
1481A	Space Navigation greedy, strings	800	x25088
1480B	The Great Hero greedy, implementation, sortings	900	x17344
1480A	Yet Another String Game games, greedy, strings	800	x26117
1479E	School Clubs dp, fft, math, number theory, probabilities	3500	x222
1479D	Odd Mineral Resource binary search, bitmasks, brute force, data structures, probabilities, trees	2900	x1042
1479C	Continuous City bitmasks, constructive algorithms	2500	x1355
1479B2	Painting the Array II constructive algorithms, data structures, dp, greedy, implementation	2100	x4131
1479B1	Painting the Array I constructive algorithms, data structures, dp, greedy, implementation	1900	x7079
1479A	Searching Local Minimum binary search, interactive, ternary search	1700	x12045
1478C	Nezzar and Symmetric Array implementation, math, sortings	1700	x9948
1478B	Nezzar and Lucky Number brute force, dp, greedy, math	1100	x18399
1478A	Nezzar and Colorful Balls brute force, greedy	800	x26760
1477F	Nezzar and Chocolate Bars combinatorics, fft, math, probabilities	3500	x141
1477E	Nezzar and Tournaments data structures, greedy	3300	x130
1477D	Nezzar and Hidden Permutations constructive algorithms, dfs and similar, graphs	2800	x580
1477C	Nezzar and Nice Beatmap constructive algorithms, geometry, greedy, math, sortings	2200	x2430
1477B	Nezzar and Binary String data structures, greedy	1900	x3279
1477A	Nezzar and Board constructive algorithms, math, number theory	1800	x6052
1476G	Minimum Difference data structures, hashing, sortings, two pointers	3100	x592
1476F	Lanterns binary search, data structures, dp	3000	x835
1476E	Pattern Matching bitmasks, data structures, dfs and similar, graphs, hashing, sortings, strings	2300	x2415
1476D	Journey dfs and similar, dp, dsu, implementation	1700	x8735
1476C	Longest Simple Cycle dp, graphs, greedy	1600	x11522
1476B	Inflation binary search, brute force, greedy, math	1300	x20301
1476A	K-divisible Sum binary search, constructive algorithms, greedy, math	1000	x38988
1475G	Strange Beauty dp, math, number theory, sortings	1900	x7006
1475F	Unusual Matrix 2-sat, brute force, constructive algorithms	1900	x5449
1475E	Advertising Agency combinatorics, math, sortings	1600	x14175
1475D	Cleaning the Phone binary search, dp, sortings, two pointers	1800	x10354
1475C	Ball in Berland combinatorics, graphs, math	1400	x21927
1475B	New Year's Number brute force, dp, math	900	x50563
1475A	Odd Divisor math, number theory	900	x64756
1474F	1 2 3 4 ... dp, math, matrices	3000	x258
1474E	What Is It? constructive algorithms, greedy	2500	x1361
1474D	Cleaning data structures, dp, greedy, math	2200	x4059
1474C	Array Destruction brute force, constructive algorithms, data structures, greedy, implementation, sortings	1700	x12978
1474B	Different Divisors binary search, constructive algorithms, greedy, math, number theory	1000	x30228
1474A	Puzzle From the Future greedy	800	x22700
1473G	Tiles combinatorics, dp, fft, math	2800	x410
1473F	Strange Set flows, math	2700	x986
1473E	Minimum Path graphs, shortest paths	2400	x3804
1473D	Program data structures, dp, implementation, strings	1700	x9841
1473C	No More Inversions constructive algorithms, math	1500	x12846
1473B	String LCM brute force, math, number theory, strings	1000	x32227
1473A	Replacing Elements greedy, implementation, math, sortings	800	x34271
1472G	Moving to the Capital dfs and similar, dp, graphs, shortest paths	2100	x4885
1472F	New Year's Puzzle brute force, dp, graph matchings, greedy, sortings	2100	x3118
1472E	Correct Placement binary search, data structures, dp, sortings, two pointers	1700	x8234
1472D	Even-Odd Game dp, games, greedy, sortings	1200	x28028
1472C	Long Jumps dp, graphs	1100	x32082
1472B	Fair Division dp, greedy, math	800	x52577
1472A	Cards for Friends greedy, math	800	x42754
1471B	Strange List brute force, greedy, implementation, math	1100	x19459
1471A	Strange Partition greedy, math, number theory	900	x27513
1470F	Strange Covering divide and conquer	3500	x138
1470E	Strange Permutation binary search, combinatorics, data structures, dp, graphs, implementation, two pointers	3200	x300
1470D	Strange Housing constructive algorithms, dfs and similar, graph matchings, graphs, greedy	2200	x3801
1470C	Strange Shuffle binary search, brute force, constructive algorithms, interactive	2500	x1363
1470B	Strange Definition bitmasks, graphs, hashing, math, number theory	1900	x6393
1470A	Strange Birthday Party binary search, dp, greedy, sortings, two pointers	1300	x23299
1469F	Power Sockets binary search, data structures, greedy	2600	x969
1469E	A Bit Similar bitmasks, brute force, hashing, string suffix structures, strings, two pointers	2400	x2013
1469D	Ceil Divisions brute force, constructive algorithms, math, number theory	1700	x9566
1469C	Building a Fence dp, greedy, implementation, two pointers	1600	x10878
1469B	Red and Blue dp, greedy	1000	x27938
1469A	Regular Bracket Sequence constructive algorithms, greedy	1000	x27908