Problemset - Codeforces

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Codeforces Round 940 (Div. 2)
5 days

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Difficulty: —

math

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Problems

#	Name
1578G	Game of Chance math, probabilities	3500	x31
1488J	Flower Shop *special problem, data structures, fft, math	3100	x31
1425C	Captain of Knights math	3100	x36
1403C	Chess Rush *special problem, combinatorics, dp, implementation, math	3200	x42
1912I	Innovative Washing Machine geometry, math, two pointers	3300	x53
1280F	Intergalactic Sliding Puzzle combinatorics, constructive algorithms, math	3400	x55
1666H	Heroes of Might math	3500	x59
100J	Interval Coloring *special problem, greedy, math	2400	x60
1949H	Division Avoidance greedy, math		x61
1776N	Count Permutations math	3500	x62
1776K	Uniform Chemistry dp, math	3200	x63
1297G	M-numbers *special problem, dp, math		x65
1310F	Bad Cryptography math, number theory	3400	x66
1211G	King's Path *special problem, math, trees	2500	x66
865F	Egg Roulette bitmasks, brute force, divide and conquer, math, meet-in-the-middle	3300	x66
1654H	Three Minimums combinatorics, constructive algorithms, divide and conquer, dp, fft, math	3500	x68
737F	Dirty plates constructive algorithms, math	3300	x68
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x71
1949E	Damage per Second brute force, math		x72
1704H2	Game of AI (hard version) combinatorics, fft, math	3500	x72
1761F2	Anti-median (Hard Version) combinatorics, dp, math	3500	x75
1375I	Cubic Lattice geometry, math, matrices, number theory	3500	x75
1896H1	Cyclic Hamming (Easy Version) brute force, divide and conquer, dp, fft, math, number theory	3400	x76
1687F	Koishi's Unconscious Permutation fft, math	3500	x76
1726H	Mainak and the Bleeding Polygon binary search, geometry, implementation, math	3500	x78
765G	Math, math everywhere brute force, dp, math, meet-in-the-middle, number theory	3200	x79
457E	Flow Optimality constructive algorithms, flows, math	3000	x80
1896H2	Cyclic Hamming (Hard Version) brute force, dp, fft, math, number theory	3500	x83
901E	Cyclic Cipher fft, math	3300	x83
28E	DravDe saves the world geometry, math	2800	x84
1677F	Tokitsukaze and Gems dp, math	3500	x85
1936E	Yet Yet Another Permutation Problem divide and conquer, fft, math	3400	x88
756F	Long number expression parsing, math, number theory	3400	x88
1045F	Shady Lady geometry, math	3400	x91
1773J	Jumbled Trees constructive algorithms, math	2900	x93
1704G	Mio and Lucky Array constructive algorithms, fft, math, strings	3500	x95
128E	Birthday geometry, math	2900	x95
1540E	Tasty Dishes math, matrices	3500	x96
109E	Lucky Interval brute force, math	2700	x97
1266H	Red-Blue Graph dp, graphs, math, matrices, meet-in-the-middle	3400	x98
1381E	Origami geometry, math, sortings	3300	x99
1718E	Impressionism constructive algorithms, graphs, implementation, math	3500	x101
1184D2	Parallel Universes (Hard) math, matrices	3100	x101
1912F	Fugitive Frenzy math, probabilities	3100	x103
1575F	Finding Expected Value math	2900	x106
269E	String Theory geometry, math, strings	3100	x106
1349F2	Slime and Sequences (Hard Version) dp, fft, math	3500	x107
1566H	Xor-quiz constructive algorithms, dp, interactive, math, number theory	3200	x108
113E	Sleeping combinatorics, implementation, math	2700	x112
1954F	Unique Strings combinatorics, dp, math	3100	x115
1737F	Ela and Prime GCD constructive algorithms, math, number theory	3300	x115
1725D	Deducing Sortability binary search, bitmasks, math	2900	x116
1386B	Mixture *special problem, data structures, geometry, math, sortings	2900	x116
72F	Oil *special problem, greedy, math	1900	x116
446E	DZY Loves Bridges math, matrices	3100	x117
79E	Security System math	2900	x117
868G	El Toll Caves math	3300	x118
802F	Marmots (hard) math, probabilities	2800	x119
1552I	Organizing a Music Festival dfs and similar, math	3400	x120
1477F	Nezzar and Chocolate Bars combinatorics, fft, math, probabilities	3500	x120
1205F	Beauty of a Permutation constructive algorithms, math	3400	x120
913H	Don't Exceed math, probabilities	3400	x121
40D	Interesting Sequence math	2600	x121
1586I	Omkar and Mosaic combinatorics, constructive algorithms, math	3500	x125
1844H	Multiple of Three Cycles combinatorics, data structures, dp, dsu, math	3400	x126
1662E	Round Table math		x126
1810H	Last Number combinatorics, math	2900	x128
1580F	Problems for Codeforces combinatorics, fft, math	3300	x129
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x129
1346G	Two IP Cameras *special problem, math, number theory	2300	x130
1666G	Global Warming geometry, math	3100	x132
1209H	Moving Walkways data structures, greedy, math	3300	x133
1184A3	Heidi Learns Hashing (Hard) fft, math, number theory	3100	x135
1361F	Johnny and New Toy data structures, implementation, math	3300	x140
1696H	Maximum Product? brute force, combinatorics, dp, greedy, implementation, math, two pointers	3500	x141
1718F	Burenka, an Array and Queries data structures, math, number theory	3300	x143
859G	Circle of Numbers math	3000	x143
549E	Sasha Circle geometry, math	2700	x144
396E	On Iteration of One Well-Known Function math		x144
1770G	Koxia and Bracket divide and conquer, fft, math	3400	x145
1158E	Strange device binary search, interactive, math, trees	3400	x146
1299E	So Mean interactive, math	3400	x147
756E	Byteland coins combinatorics, dp, math	3200	x149
267C	Berland Traffic math, matrices	2700	x153
1450H2	Multithreading (Hard Version) combinatorics, implementation, math	3300	x161
329E	Evil math	3100	x162
1408I	Bitwise Magic dp, math	3200	x163
1796F	Strange Triples brute force, math, number theory	2900	x165
1236F	Alice and the Cactus dfs and similar, graphs, math, probabilities	3000	x165
1601F	Two Sorts binary search, dfs and similar, math, meet-in-the-middle	3400	x166
401E	Olympic Games math	2500	x166
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x168
1054H	Epic Convolution chinese remainder theorem, fft, math, number theory	3500	x170
1951G	Clacking Balls combinatorics, math, probabilities	3100	x174
1242D	Number Discovery math	3400	x174
736E	Chess Championship constructive algorithms, flows, greedy, math	2900	x177
86E	Long sequence brute force, math, matrices	2700	x177
1479E	School Clubs dp, fft, math, number theory, probabilities	3500	x179
1765J	Hero to Zero graph matchings, math	2900	x180
72A	Goshtasp, Vishtasp and Eidi *special problem, greedy, math	1800	x181

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