Problemset - Codeforces

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Before contest
Codeforces Round 941 (Div. 1)
4 days

Before contest
Codeforces Round 941 (Div. 2)
4 days

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Difficulty: —

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Problems

#	Name
1478C	Nezzar and Symmetric Array implementation, math, sortings	1700	x9476
1684D	Traps constructive algorithms, greedy, sortings	1700	x9277
1462E2	Close Tuples (hard version) binary search, combinatorics, implementation, math, sortings, two pointers	1700	x9182
1253D	Harmonious Graph constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings	1700	x8818
1783C	Yet Another Tournament binary search, greedy, sortings	1700	x8745
1619E	MEX and Increments constructive algorithms, data structures, dp, greedy, implementation, math, sortings	1700	x8621
382C	Arithmetic Progression implementation, sortings	1700	x8145
1361A	Johnny and Contribution constructive algorithms, graphs, greedy, sortings	1700	x8140
1893B	Neutral Tonality constructive algorithms, greedy, sortings, two pointers	1700	x8007
1472E	Correct Placement binary search, data structures, dp, sortings, two pointers	1700	x7692
1777C	Quiz Master binary search, math, number theory, sortings, two pointers	1700	x7658
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7447
1257D	Yet Another Monster Killing Problem binary search, data structures, dp, greedy, sortings, two pointers	1700	x7193
632C	The Smallest String Concatenation sortings, strings	1700	x7171
1889B	Doremy's Connecting Plan constructive algorithms, greedy, math, sortings	1700	x6664
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x6605
1000C	Covered Points Count data structures, implementation, sortings	1700	x6418
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x6360
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x6295
1792D	Fixed Prefix Permutations binary search, bitmasks, data structures, hashing, math, sortings	1700	x5852
439D	Devu and his Brother binary search, sortings, ternary search, two pointers	1700	x5765
1102E	Monotonic Renumeration combinatorics, sortings	1700	x5581
732D	Exams binary search, greedy, sortings	1700	x5396
1884C	Medium Design brute force, data structures, dp, greedy, sortings	1700	x5374
1148C	Crazy Diamond constructive algorithms, sortings	1700	x5011
1310A	Recommendations data structures, greedy, sortings	1700	x4928
567D	One-Dimensional Battle Ships binary search, data structures, greedy, sortings	1700	x4639
1468D	Firecrackers binary search, sortings	1700	x4452
978G	Petya's Exams greedy, implementation, sortings	1700	x4184
761D	Dasha and Very Difficult Problem binary search, brute force, constructive algorithms, greedy, sortings	1700	x3939
827A	String Reconstruction data structures, greedy, sortings, strings	1700	x3936
729C	Road to Cinema binary search, greedy, sortings	1700	x3834
631C	Report data structures, sortings	1700	x3681
1687B	Railway System constructive algorithms, graphs, greedy, interactive, sortings	1700	x3473
895B	XK Segments binary search, math, sortings, two pointers	1700	x3414
160C	Find Pair implementation, math, sortings	1700	x3380
1056C	Pick Heroes greedy, implementation, interactive, sortings	1700	x2311
596C	Wilbur and Points combinatorics, greedy, sortings	1700	x2233
925B	Resource Distribution binary search, implementation, sortings	1700	x2174
161B	Discounts constructive algorithms, greedy, sortings	1700	x1922
131E	Yet Another Task with Queens sortings	1700	x1805
81C	Average Score greedy, math, sortings	1700	x1624
216D	Spider's Web binary search, sortings, two pointers	1700	x1319
159E	Zebra Tower *special problem, data structures, greedy, sortings	1700	x987
1211C	Ice Cream *special problem, greedy, sortings	1700	x476
1398D	Colored Rectangles dp, greedy, sortings	1800	x10963
1437C	Chef Monocarp dp, flows, graph matchings, greedy, math, sortings	1800	x10068
1475D	Cleaning the Phone binary search, dp, sortings, two pointers	1800	x9686
459D	Pashmak and Parmida's problem data structures, divide and conquer, sortings	1800	x9465
1401D	Maximum Distributed Tree dfs and similar, dp, greedy, implementation, math, number theory, sortings, trees	1800	x8843
1572A	Book binary search, brute force, data structures, dp, graphs, implementation, sortings	1800	x8503
1286A	Garland dp, greedy, sortings	1800	x8376
1367D	Task On The Board constructive algorithms, greedy, implementation, sortings	1800	x7956
1560E	Polycarp and String Transformation binary search, implementation, sortings, strings	1800	x7635
1409E	Two Platforms binary search, dp, sortings, two pointers	1800	x7531
1420D	Rescue Nibel! combinatorics, data structures, sortings	1800	x7292
1619D	New Year's Problem binary search, greedy, sortings	1800	x7218
1296E1	String Coloring (easy version) constructive algorithms, dp, graphs, greedy, sortings	1800	x7079
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x6982
1213G	Path Queries divide and conquer, dsu, graphs, sortings, trees	1800	x6581
830A	Office Keys binary search, brute force, dp, greedy, sortings	1800	x6533
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x6489
1394A	Boboniu Chats with Du dp, greedy, sortings, two pointers	1800	x6437
1870D	Prefix Purchase greedy, implementation, sortings	1800	x6360
1721D	Maximum AND bitmasks, dfs and similar, divide and conquer, greedy, sortings	1800	x6261
1156B	Ugly Pairs dfs and similar, greedy, implementation, sortings, strings	1800	x6119
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6080
1154E	Two Teams data structures, implementation, sortings	1800	x6003
1801B	Buying gifts data structures, greedy, sortings	1800	x5768
1552C	Maximize the Intersections combinatorics, constructive algorithms, geometry, greedy, sortings	1800	x5764
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x5345
1176D	Recover it! dfs and similar, graphs, greedy, number theory, sortings	1800	x5122
1133E	K Balanced Teams dp, sortings, two pointers	1800	x5122
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x5038
404C	Restore Graph dfs and similar, graphs, sortings	1800	x4987
1249D2	Too Many Segments (hard version) data structures, greedy, sortings	1800	x4862
1148D	Dirty Deeds Done Dirt Cheap greedy, sortings	1800	x4858
527D	Clique Problem data structures, dp, greedy, implementation, sortings	1800	x4641
913D	Too Easy Problems binary search, brute force, data structures, greedy, sortings	1800	x4491
1119D	Frets On Fire binary search, sortings	1800	x4489
1077E	Thematic Contests greedy, sortings	1800	x4345
1907F	Shift and Reverse greedy, sortings	1800	x4312
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x4272
922D	Robot Vacuum Cleaner greedy, sortings	1800	x4189
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x4113
1282C	Petya and Exam greedy, sortings, two pointers	1800	x4097
1081D	Maximum Distance dsu, graphs, shortest paths, sortings	1800	x3874
652D	Nested Segments data structures, sortings	1800	x3781
768C	Jon Snow and his Favourite Number brute force, dp, implementation, sortings	1800	x3769
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x3737
1005E1	Median on Segments (Permutations Edition) sortings	1800	x3707
612D	The Union of k-Segments greedy, sortings	1800	x3659
492D	Vanya and Computer Game binary search, implementation, math, sortings	1800	x3114
652C	Foe Pairs combinatorics, sortings, two pointers	1800	x3065
794C	Naming Company games, greedy, sortings	1800	x3018
747D	Winter Is Coming dp, greedy, sortings	1800	x2947
853B	Jury Meeting greedy, sortings, two pointers	1800	x2503
38E	Let's Go Rolling! dp, sortings	1800	x2478
432C	Prime Swaps greedy, sortings	1800	x2430
433C	Ryouko's Memory Note implementation, math, sortings	1800	x2395