Problemset - Codeforces

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Codeforces Round 991 (Div. 3)
45:05:17
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Problems

#	Name
2031F	Penchick and Even Medians binary search, constructive algorithms, interactive, probabilities	2800	x282
2028E	Alice's Adventures in the Rabbit Hole combinatorics, dfs and similar, dp, games, greedy, math, probabilities, trees	2300	x1214
2023D	Many Games brute force, dp, greedy, math, probabilities	2900	x418
2020E	Expected Power bitmasks, dp, math, probabilities	2000	x3026
2003F	Turtle and Three Sequences brute force, data structures, dp, greedy, math, probabilities, two pointers	2800	x488
1983E	I Love Balls combinatorics, math, probabilities	2300	x2025
1970D2	Arithmancy (Medium) constructive algorithms, interactive, probabilities, strings	2600	x212
1957F2	Frequency Mismatch (Hard Version) binary search, data structures, dfs and similar, hashing, probabilities, trees	2700	x447
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees	2600	x505
1951G	Clacking Balls combinatorics, math, probabilities	3100	x337
1949A	Grove brute force, dfs and similar, dp, geometry, probabilities	3300	x115
1948F	Rare Coins combinatorics, math, probabilities	2500	x1342
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3722
1924E	Paper Cutting Again combinatorics, probabilities	3100	x443
1918E	ace5 and Task Order constructive algorithms, divide and conquer, implementation, interactive, probabilities, sortings	2200	x1758
1912F	Fugitive Frenzy math, probabilities	3100	x116
1874D	Jellyfish and Miku divide and conquer, dp, math, probabilities	2800	x746
1874C	Jellyfish and EVA dp, graphs, greedy, math, probabilities	2300	x1754
1866M	Mighty Rock Tower brute force, combinatorics, dp, math, probabilities	2400	x822
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x2688
1854C	Expected Destruction combinatorics, dp, math, probabilities	2500	x1541
1847E	Triangle Platinum? brute force, combinatorics, implementation, interactive, math, probabilities	2900	x335
1842H	Tenzing and Random Real Numbers bitmasks, dp, graphs, math, probabilities	3000	x712
1842G	Tenzing and Random Operations combinatorics, dp, math, probabilities	2800	x1087
1840G2	In Search of Truth (Hard Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2500	x998
1840G1	In Search of Truth (Easy Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2200	x2421
1835E	Old Mobile combinatorics, dp, probabilities	3500	x232
1835C	Twin Clusters bitmasks, brute force, constructive algorithms, math, probabilities	2600	x1015
1826F	Fading into Fog geometry, interactive, math, probabilities	2800	x386
1824B2	LuoTianyi and the Floating Islands (Hard Version) combinatorics, dfs and similar, math, probabilities, trees	2300	x2738
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x4705
1823F	Random Walk dp, graphs, math, probabilities, trees	2600	x904
1819E	Roads in E City interactive, math, probabilities, trees	3200	x316
1788B	Sum of Two Numbers constructive algorithms, greedy, implementation, math, probabilities	1100	x20283
1784E	Infinite Game brute force, combinatorics, dp, games, probabilities	3100	x347
1778D	Flexible String Revisit combinatorics, dp, math, probabilities	2100	x2839
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees	1900	x3564
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x392
1773B	BinCoin binary search, divide and conquer, hashing, implementation, probabilities, trees	2200	x805
1773A	Amazing Trick constructive algorithms, graph matchings, math, probabilities	1900	x1594
1771F	Hossam and Range Minimum Query binary search, bitmasks, data structures, hashing, probabilities, strings, trees	2500	x1201
1770E	Koxia and Tree combinatorics, dfs and similar, dp, dsu, math, probabilities, trees	2400	x1384
1765G	Guess the String constructive algorithms, interactive, probabilities	2600	x405
1765F	Chemistry Lab dp, geometry, probabilities	2200	x618
1765C	Card Guessing combinatorics, dp, probabilities	2600	x404
1761G	Centroid Guess interactive, probabilities, trees	3500	x114
1753C	Wish I Knew How to Sort dp, math, probabilities	2000	x4585
1746F	Kazaee data structures, hashing, probabilities	2800	x1876
1743F	Intersection and Union data structures, dp, matrices, probabilities	2300	x1543
1743D	Problem with Random Tests brute force, dp, greedy, probabilities	1700	x7668
1737E	Ela Goes Hiking combinatorics, dp, math, probabilities	2500	x948
1729E	Guess the Cycle Size interactive, probabilities	1800	x7113
1726D	Edge Split brute force, constructive algorithms, dfs and similar, dsu, graphs, probabilities, trees	2000	x3756
1713D	Tournament Countdown constructive algorithms, greedy, interactive, number theory, probabilities	1800	x5729
1705F	Mark and the Online Exam bitmasks, constructive algorithms, interactive, probabilities	2900	x623
1630E	Expected Components combinatorics, math, number theory, probabilities	2900	x445
1626F	A Random Code Problem combinatorics, dp, math, number theory, probabilities	2800	x739
1623D	Robot Cleaner Revisit implementation, math, probabilities	2300	x1387
1612E	Messages brute force, dp, greedy, probabilities, sortings	2000	x2560
1600F	Party Organization brute force, math, probabilities	2300	x499
1599C	Bubble Strike combinatorics, math, probabilities, ternary search	2000	x1690
1578M	The Mind constructive algorithms, interactive, probabilities	2700	x457
1578G	Game of Chance math, probabilities	3500	x38
1571H	Laser Beams *special problem, geometry, probabilities	2900	x49
1562F	Tubular Bells interactive, math, number theory, probabilities	2900	x409
1556H	DIY Tree graphs, greedy, math, probabilities	3300	x376
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1265
1543C	Need for Pink Slips bitmasks, brute force, dfs and similar, implementation, math, probabilities	1900	x5329
1540B	Tree Array brute force, combinatorics, dp, graphs, math, probabilities, trees	2300	x2667
1530F	Bingo bitmasks, combinatorics, dp, math, probabilities	2600	x833
1526F	Median Queries constructive algorithms, interactive, probabilities	3000	x295
1525E	Assimilation IV combinatorics, dp, math, probabilities, two pointers	2100	x2086
1523E	Crypto Lights combinatorics, dp, math, probabilities	2600	x1703
1523D	Love-Hate bitmasks, brute force, dp, probabilities	2400	x2193
1510I	Is It Rated? greedy, interactive, math, probabilities	2700	x496
1479E	School Clubs dp, fft, math, number theory, probabilities	3500	x217
1479D	Odd Mineral Resource binary search, bitmasks, brute force, data structures, probabilities, trees	2900	x1034
1477F	Nezzar and Chocolate Bars combinatorics, fft, math, probabilities	3500	x135
1461C	Random Events dp, math, probabilities	1500	x11353
1459A	Red-Blue Shuffle math, probabilities	800	x17050
1454A	Special Permutation constructive algorithms, probabilities	800	x40909
1453D	Checkpoints brute force, constructive algorithms, greedy, math, probabilities	1900	x4190
1438F	Olha and Igor interactive, probabilities, trees	3000	x648
1418E	Expected Damage binary search, combinatorics, probabilities	2400	x1898
1392H	ZS Shuffles Cards combinatorics, dp, math, probabilities	3000	x786
1380G	Circular Dungeon greedy, math, probabilities	2600	x812
1364E	X-OR bitmasks, constructive algorithms, divide and conquer, interactive, probabilities	2700	x1440
1361E	James and the Chase dfs and similar, graphs, probabilities, trees	3000	x703
1354G	Find a Gift binary search, interactive, probabilities	2600	x801
1349D	Slime and Biscuits math, probabilities	3200	x927
1340E	Nastya and Bees graphs, interactive, probabilities	3000	x53
1316F	Battalion Strength data structures, divide and conquer, probabilities	2800	x812
1310D	Tourism dp, graphs, probabilities	2300	x1608
1305F	Kuroni and the Punishment math, number theory, probabilities	2500	x2730
1295F	Good Contest combinatorics, dp, probabilities	2700	x1280
1286D	LCC data structures, math, matrices, probabilities	3100	x622
1279D	Santa's Bot combinatorics, math, probabilities	1700	x6420
1278F	Cards combinatorics, dp, math, number theory, probabilities	2600	x1930
1267G	Game Relics math, probabilities	3000	x682
1265E	Beautiful Mirrors data structures, dp, math, probabilities	2100	x3770

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