Problemset - Codeforces

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Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)
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Problems

#	Name
67D	Optical Experiment binary search, data structures, dp	1900	x1456
67C	Sequence of Balls dp	2600	x689
67B	Restoration of the Permutation greedy	1800	x779
67A	Partial Teacher dp, graphs, greedy, implementation	1800	x2123
66E	Petya and Post data structures, dp	2000	x760
66D	Petya and His Friends constructive algorithms, math, number theory	1700	x3189
66C	Petya and File System data structures, implementation	1800	x1081
65E	Harry Potter and Moving Staircases dfs and similar, implementation	2900	x94
65D	Harry Potter and the Sorting Hat brute force, dfs and similar, hashing	2200	x433
65C	Harry Potter and the Golden Snitch binary search, geometry	2100	x789
65B	Harry Potter and the History of Magic brute force, greedy, implementation	1700	x1379
65A	Harry Potter and Three Spells implementation, math	1800	x1824
64I	Sort the Table *special problem, sortings	2400	x89
64H	Table Bowling *special problem, sortings	2300	x114
64G	Path Canonization *special problem	2200	x121
64F	Domain *special problem, expression parsing	2000	x181
64E	Prime Segment *special problem, brute force, math, number theory	1800	x243
64D	Presents *special problem, greedy	1800	x289
64C	Table *special problem, greedy, implementation, math	1600	x339
63E	Sweets Game bitmasks, dfs and similar, dp, games, implementation	2000	x766
63D	Dividing Island constructive algorithms	1900	x1269
63C	Bulls and Cows brute force, implementation	1700	x1740
62E	World Evil dp, flows	2700	x232
62D	Wormhouse dfs and similar, graphs	2300	x374
62C	Inquisition geometry, implementation, sortings	2300	x252
62B	Tyndex.Brome binary search, implementation	1800	x1293
61E	Enemy is weak data structures, trees	1900	x11387
61D	Eternal Victory dfs and similar, graphs, greedy, shortest paths, trees	1800	x6626
61C	Capture Valerian math	2000	x718
60E	Mushroom Gnomes math, matrices	2600	x327
60D	Savior brute force, dsu, math	2500	x454
60C	Mushroom Strife brute force, dfs and similar	2100	x567
59E	Shortest Path graphs, shortest paths	2000	x3485
59D	Team Arrangement constructive algorithms, greedy, implementation	2000	x638
59C	Title expression parsing	1600	x2112
58E	Expression dp	2400	x393
58D	Calendar greedy, strings	2000	x734
58C	Trees brute force	1800	x2044
57E	Chess math, shortest paths	3000	x264
57D	Journey dp, math	2500	x342
57C	Array combinatorics, math	1900	x2697
57B	Martian Architecture implementation	1600	x1022
56E	Domino Principle binary search, data structures, sortings	2200	x2408
56D	Changing a String dp	2100	x1651
56C	Corporation Mail data structures, expression parsing, implementation	1700	x1172
55E	Very simple problem geometry, two pointers	2500	x707
55D	Beautiful numbers dp, number theory	2500	x3948
55C	Pie or die games	1900	x1657
55B	Smallest number brute force	1600	x2881
54E	Vacuum Сleaner geometry	2700	x194
54D	Writing a Song brute force, dp, strings	2100	x547
54C	First Digit Law dp, math, probabilities	2000	x1346
54B	Cutting Jigsaw Puzzle hashing, implementation	1800	x776
53E	Dead Ends bitmasks, dp	2500	x1009
53B	Blog Photo binary search, implementation	1700	x1417
52C	Circular RMQ data structures	2200	x9069
52B	Right Triangles combinatorics	1600	x2075
51F	Caterpillar dfs and similar, dp, graphs, trees	2800	x642
51E	Pentagon combinatorics, graphs, matrices	2400	x412
51D	Geometrical problem implementation	2200	x482
51C	Three Base Stations binary search, greedy	1800	x2021
51B	bHTML Tables Analisys expression parsing	1700	x875
50E	Square Equation Roots math	2300	x364
50D	Bombing binary search, dp, probabilities	2100	x635
50C	Happy Farm 5 geometry	2000	x771
49E	Common ancestor dp	2300	x678
49D	Game brute force, dp, implementation	1800	x1920
49C	Disposition constructive algorithms, math	1700	x1697
48H	Black and White constructive algorithms	2800	x152
48G	Galaxy Union dp, trees, two pointers	2700	x277
48F	Snow sellers greedy, sortings	2800	x160
48E	Ivan the Fool VS Gorynych the Dragon dp, games, graphs	2100	x588
48C	The Race math	1800	x786
47E	Cannon data structures, geometry, sortings	2200	x370
47D	Safe brute force	2200	x781
47C	Crossword implementation	2000	x790
46G	Emperor's Problem geometry	2500	x117
46F	Hercule Poirot Problem dsu, graphs	2300	x330
46E	Comb data structures, dp	1900	x965
46D	Parking Lot data structures, implementation	1800	x986
46C	Hamsters and Tigers two pointers	1600	x2457
45J	Planting Trees constructive algorithms	1800	x946
45H	Road Problem graphs	2100	x193
45G	Prime Problem number theory	2200	x1052
45F	Goats and Wolves greedy	2500	x145
45E	Director constructive algorithms, greedy	2000	x551
45D	Event Dates greedy, meet-in-the-middle, sortings	1900	x1702
45C	Dancing Lessons data structures	1900	x920
45B	School dp, dsu	2200	x282
44J	Triminoes constructive algorithms, greedy	2000	x576
44I	Toys brute force, combinatorics	2300	x195
44H	Phone Number dp	1700	x1751
44G	Shooting Gallery data structures, implementation	2500	x409
44F	BerPaint geometry, graphs	2700	x68
44D	Hyperdrive math	1800	x716
43E	Race brute force, implementation, two pointers	2300	x396
43D	Journey brute force, constructive algorithms, implementation	2000	x1091
42E	Baldman and the military dfs and similar, graphs, trees	2700	x207
42D	Strange town constructive algorithms, math	2300	x412
42C	Safe cracking brute force, constructive algorithms	2200	x488