Problemset - Codeforces

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Educational Codeforces Round 165 (Rated for Div. 2)
19:51:32
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Problems

#	Name
983A	Finite or not? implementation, math	1700	x4448
1579F	Array Stabilization (AND version) brute force, graphs, math, number theory, shortest paths	1700	x4561
1042C	Array Product constructive algorithms, greedy, math	1700	x4625
578A	A Problem about Polyline geometry, math	1700	x4683
689C	Mike and Chocolate Thieves binary search, combinatorics, math	1700	x4865
1670D	Very Suspicious binary search, brute force, geometry, greedy, implementation, math	1700	x4943
923A	Primal Sport math, number theory	1700	x4965
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5145
1280A	Cut and Paste implementation, math	1700	x5151
1009C	Annoying Present greedy, math	1700	x5186
1735D	Meta-set brute force, combinatorics, data structures, hashing, math	1700	x5266
621C	Wet Shark and Flowers combinatorics, math, number theory, probabilities	1700	x5280
691D	Swaps in Permutation dfs and similar, dsu, math	1700	x5281
625A	Guest From the Past implementation, math	1700	x5352
1561D1	Up the Strip (simplified version) brute force, data structures, dp, math, number theory	1700	x5380
1942C2	Bessie's Birthday Cake (Hard Version) geometry, greedy, math	1700	x5384
1792D	Fixed Prefix Permutations binary search, bitmasks, data structures, hashing, math, sortings	1700	x5863
1279D	Santa's Bot combinatorics, math, probabilities	1700	x5893
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x5965
1215D	Ticket Game games, greedy, math	1700	x5967
1066E	Binary Numbers AND Sum data structures, implementation, math	1700	x5992
833A	The Meaningless Game math, number theory	1700	x6014
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x6095
1111C	Creative Snap binary search, brute force, divide and conquer, math	1700	x6101
1009D	Relatively Prime Graph brute force, constructive algorithms, graphs, greedy, math	1700	x6140
1111B	Average Superhero Gang Power brute force, implementation, math	1700	x6177
1562D1	Two Hundred Twenty One (easy version) data structures, dp, math	1700	x6178
1194D	1-2-K Game games, math	1700	x6186
630I	Parking Lot combinatorics, math	1700	x6271
1864D	Matrix Cascade brute force, constructive algorithms, data structures, dp, greedy, math	1700	x6309
1329B	Dreamoon Likes Sequences bitmasks, combinatorics, math	1700	x6351
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x6413
1185D	Extra Element implementation, math	1700	x6423
1313B	Different Rules constructive algorithms, greedy, implementation, math	1700	x6456
1822G1	Magic Triples (Easy Version) brute force, data structures, math, number theory	1700	x6457
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x6475
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x6534
1091D	New Year and the Permutation Concatenation combinatorics, dp, math	1700	x6584
1141E	Superhero Battle math	1700	x6588
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x6625
518D	Ilya and Escalator combinatorics, dp, math, probabilities	1700	x6672
1889B	Doremy's Connecting Plan constructive algorithms, greedy, math, sortings	1700	x6705
1621C	Hidden Permutations dfs and similar, interactive, math	1700	x6720
1690F	Shifting String graphs, math, number theory, strings	1700	x6772
1551D1	Domino (easy version) constructive algorithms, math	1700	x6834
1618E	Singers' Tour constructive algorithms, math	1700	x6938
1660F1	Promising String (easy version) brute force, implementation, math, strings	1700	x6966
1644D	Cross Coloring data structures, implementation, math	1700	x6979
1829H	Don't Blame Me bitmasks, combinatorics, dp, math	1700	x7016
1692H	Gambling data structures, dp, greedy, math	1700	x7025
1810D	Climbing the Tree binary search, math	1700	x7058
1239A	Ivan the Fool and the Probability Theory combinatorics, dp, math	1700	x7079
1185C2	Exam in BerSU (hard version) brute force, data structures, greedy, math	1700	x7137
1114C	Trailing Loves (or L'oeufs?) brute force, implementation, math, number theory	1700	x7245
1835A	k-th equality brute force, implementation, math	1700	x7409
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7429
1777C	Quiz Master binary search, math, number theory, sortings, two pointers	1700	x7677
1798C	Candy Store greedy, math, number theory	1700	x7754
1512G	Short Task brute force, dp, math, number theory	1700	x7784
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x7808
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x7843
1260C	Infinite Fence greedy, math, number theory	1700	x7864
1702F	Equate Multisets constructive algorithms, data structures, greedy, math, number theory	1700	x7913
1497E1	Square-Free Division (easy version) data structures, dp, greedy, math, number theory, two pointers	1700	x8024
1709D	Rorororobot binary search, data structures, greedy, math	1700	x8053
1422C	Bargain combinatorics, dp, math	1700	x8070
1770C	Koxia and Number Theory brute force, chinese remainder theorem, math, number theory	1700	x8248
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8313
1715C	Monoblock combinatorics, data structures, implementation, math	1700	x8317
1061C	Multiplicity data structures, dp, implementation, math, number theory	1700	x8334
1598D	Training Session combinatorics, data structures, geometry, implementation, math	1700	x8390
1528B	Kavi on Pairing Duty combinatorics, dp, math	1700	x8450
1619E	MEX and Increments constructive algorithms, data structures, dp, greedy, implementation, math, sortings	1700	x8641
1228C	Primes and Multiplication math, number theory	1700	x8679
1216C	White Sheet geometry, math	1700	x8759
287B	Pipeline binary search, math	1700	x8812
490C	Hacking Cypher brute force, math, number theory, strings	1700	x8897
1731C	Even Subarrays bitmasks, brute force, hashing, math, number theory	1700	x8898
1312D	Count the Arrays combinatorics, math	1700	x8925
1661C	Water the Trees binary search, greedy, math	1700	x8945
1301C	Ayoub's function binary search, combinatorics, greedy, math, strings	1700	x9050
1295B	Infinite Prefixes math, strings	1700	x9066
1658C	Shinju and the Lost Permutation constructive algorithms, math	1700	x9079
1469D	Ceil Divisions brute force, constructive algorithms, math, number theory	1700	x9133
1462E2	Close Tuples (hard version) binary search, combinatorics, implementation, math, sortings, two pointers	1700	x9198
1451D	Circle Game games, geometry, math	1700	x9257
385C	Bear and Prime Numbers binary search, brute force, data structures, dp, implementation, math, number theory	1700	x9364
1699C	The Third Problem combinatorics, constructive algorithms, math	1700	x9378
1478C	Nezzar and Symmetric Array implementation, math, sortings	1700	x9482
1814B	Long Legs brute force, math	1700	x9486
493D	Vasya and Chess constructive algorithms, games, math	1700	x9498
1485C	Floor and Mod binary search, brute force, math, number theory	1700	x9507
1393C	Pinkie Pie Eats Patty-cakes constructive algorithms, greedy, math, sortings	1700	x10251
1626C	Monsters And Spells binary search, data structures, dp, greedy, implementation, math, two pointers	1700	x10596
1400B	RPG Protagonist brute force, greedy, math	1700	x10825
1336B	Xenia and Colorful Gems binary search, greedy, math, sortings, two pointers	1700	x10967
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x11198
546D	Soldier and Number Game constructive algorithms, dp, math, number theory	1700	x11198
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11501
1537D	Deleting Divisors games, math, number theory	1700	x11827