Problemset - Codeforces

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Educational Codeforces Round 165 (Rated for Div. 2)
34:21:39
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Problems

#	Name
679D	Bear and Chase brute force, dfs and similar, graphs, implementation, math, probabilities	2900	x311
1361D	Johnny and James greedy, implementation, math, trees	2900	x306
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x300
449E	Jzzhu and Squares dp, math, number theory	2900	x281
933D	A Creative Cutout brute force, combinatorics, math	2900	x280
1806F2	GCD Master (hard version) greedy, math, sortings	2900	x265
1860F	Evaluate RBS data structures, geometry, implementation, math, sortings	2900	x263
217D	Bitonix' Patrol bitmasks, brute force, combinatorics, dfs and similar, math	2900	x245
497D	Gears brute force, geometry, math	2900	x224
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x207
1280E	Kirchhoff's Current Loss math	2900	x195
1765J	Hero to Zero graph matchings, math	2900	x185
736E	Chess Championship constructive algorithms, flows, greedy, math	2900	x182
1796F	Strange Triples brute force, math, number theory	2900	x167
1810H	Last Number combinatorics, math	2900	x129
1386B	Mixture *special problem, data structures, geometry, math, sortings	2900	x118
79E	Security System math	2900	x118
1725D	Deducing Sortability binary search, bitmasks, math	2900	x117
1575F	Finding Expected Value math	2900	x107
1773J	Jumbled Trees constructive algorithms, math	2900	x97
128E	Birthday geometry, math	2900	x96
739E	Gosha is hunting brute force, data structures, dp, flows, math, probabilities, sortings	3000	x2044
603E	Pastoral Oddities data structures, divide and conquer, dsu, math, trees	3000	x1150
891E	Lust combinatorics, math, matrices	3000	x841
1616H	Keep XOR Low bitmasks, combinatorics, data structures, divide and conquer, dp, math	3000	x783
1392H	ZS Shuffles Cards combinatorics, dp, math, probabilities	3000	x668
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x637
1267G	Game Relics math, probabilities	3000	x625
1667E	Centroid Probabilities combinatorics, dp, fft, math	3000	x621
1707D	Partial Virtual Trees combinatorics, dfs and similar, dp, math, trees	3000	x579
1842H	Tenzing and Random Real Numbers bitmasks, dp, graphs, math, probabilities	3000	x556
889E	Mod Mod Mod binary search, dp, math	3000	x514
1545D	AquaMoon and Wrong Coordinate constructive algorithms, interactive, math	3000	x461
1637G	Birthday constructive algorithms, greedy, math	3000	x452
1299D	Around the World bitmasks, combinatorics, dfs and similar, dp, graphs, graphs, math, trees	3000	x414
1583G	Omkar and Time Travel data structures, math	3000	x400
375E	Red and Black Tree dp, implementation, math	3000	x397
1854E	Game Bundles brute force, constructive algorithms, dp, greedy, math	3000	x379
1609G	A Stroll Around the Matrix data structures, greedy, math	3000	x362
1418F	Equal Product data structures, math, number theory, two pointers	3000	x355
1063E	Lasers and Mirrors constructive algorithms, math	3000	x330
1411F	The Thorny Path greedy, math	3000	x319
303E	Random Ranking dp, math, probabilities	3000	x311
1874E	Jellyfish and Hack dp, math	3000	x266
346E	Doodle Jump math, number theory	3000	x249
57E	Chess math, shortest paths	3000	x249
1743G	Antifibonacci Cut bitmasks, combinatorics, constructive algorithms, data structures, dp, hashing, math	3000	x244
1474F	1 2 3 4 ... dp, math, matrices	3000	x239
280E	Sequence Transformation brute force, data structures, dp, implementation, math	3000	x196
1236F	Alice and the Cactus dfs and similar, graphs, math, probabilities	3000	x168
859G	Circle of Numbers math	3000	x145
457E	Flow Optimality constructive algorithms, flows, math	3000	x81
708E	Student's Camp dp, math	3100	x924
809E	Surprise me! divide and conquer, math, number theory, trees	3100	x714
1770F	Koxia and Sequence bitmasks, combinatorics, dp, math, number theory	3100	x601
1503E	2-Coloring combinatorics, dp, math	3100	x592
1286D	LCC data structures, math, matrices, probabilities	3100	x556
1463F	Max Correct Set bitmasks, dp, math	3100	x550
626G	Raffles data structures, dp, greedy, math	3100	x517
653G	Move by Prime combinatorics, math, number theory	3100	x513
963E	Circles of Waiting math	3100	x502
516E	Drazil and His Happy Friends math, number theory	3100	x471
538G	Berserk Robot constructive algorithms, math, sortings	3100	x441
923E	Perpetual Subtraction fft, math, matrices	3100	x435
1349F1	Slime and Sequences (Easy Version) dp, fft, math	3100	x397
1261F	Xor-Set bitmasks, divide and conquer, math	3100	x370
1168E	Xor Permutations constructive algorithms, math	3100	x353
1067D	Computer Game dp, greedy, math, probabilities	3100	x351
1815E	Bosco and Particle dp, math, number theory, strings	3100	x323
986D	Perfect Encoding fft, math	3100	x322
1805F2	Survival of the Weakest (hard version) greedy, math, sortings, two pointers	3100	x319
468E	Permanent dp, graph matchings, math, meet-in-the-middle	3100	x305
830E	Perpetual Motion Machine constructive algorithms, dp, graphs, implementation, math, trees	3100	x272
1012E	Cycle sort dsu, math	3100	x268
981H	K Paths combinatorics, data structures, dp, fft, math	3100	x264
1286F	Harry The Potter brute force, constructive algorithms, dp, fft, implementation, math	3100	x233
1951G	Clacking Balls combinatorics, math, probabilities	3100	x225
1761F1	Anti-median (Easy Version) dp, math	3100	x197
1954F	Unique Strings combinatorics, dp, math	3100	x182
329E	Evil math	3100	x163
1184A3	Heidi Learns Hashing (Hard) fft, math, number theory	3100	x136
1666G	Global Warming geometry, math	3100	x133
446E	DZY Loves Bridges math, matrices	3100	x118
269E	String Theory geometry, math, strings	3100	x107
1912F	Fugitive Frenzy math, probabilities	3100	x104
1184D2	Parallel Universes (Hard) math, matrices	3100	x102
1425C	Captain of Knights math	3100	x38
1488J	Flower Shop *special problem, data structures, fft, math	3100	x31
755G	PolandBall and Many Other Balls combinatorics, divide and conquer, dp, fft, math, number theory	3200	x856
1349D	Slime and Biscuits math, probabilities	3200	x806
1621G	Weighted Increasing Subsequences data structures, dp, math	3200	x622
1025G	Company Acquisitions constructive algorithms, math	3200	x609
1034E	Little C Loves 3 III bitmasks, dp, math	3200	x585
553E	Kyoya and Train dp, fft, graphs, math, probabilities	3200	x530
1119H	Triple fft, math	3200	x510
1268D	Invertation in Tournament brute force, divide and conquer, graphs, math	3200	x480
1326F2	Wise Men (Hard Version) bitmasks, dp, math	3200	x458
1603E	A Perfect Problem combinatorics, dp, math	3200	x399
1656H	Equal LCM Subsets data structures, math, number theory	3200	x398
1081G	Mergesort Strikes Back math, probabilities	3200	x338