Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
44:49:00
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Problems

#	Name
1730A	Planets data structures, greedy, sortings	800	x23236
1729B	Decode String greedy, strings	800	x30558
1729A	Two Elevators math	800	x41186
1728B	Best Permutation constructive algorithms, greedy	800	x20211
1728A	Colored Balls: Revisited brute force, greedy, implementation, sortings	800	x24769
1725A	Accumulation of Dominoes math	800	x9401
1722C	Word Game data structures, implementation	800	x31759
1722B	Colourblindness implementation	800	x47672
1722A	Spell Check implementation	800	x52821
1721A	Image greedy, implementation	800	x27176
1720B	Interesting Sum brute force, data structures, greedy, math, sortings	800	x21342
1719B	Mathematical Circus constructive algorithms, math	800	x18611
1719A	Chip Game games, math	800	x25699
1717A	Madoka and Strange Thoughts math, number theory	800	x19626
1716B	Permutation Chain constructive algorithms, math	800	x21481
1716A	2-3 Moves greedy, math	800	x33303
1715A	Crossmarket constructive algorithms, greedy, math	800	x23642
1714C	Minimum Varied Number greedy	800	x31346
1714B	Remove Prefix data structures, greedy, implementation	800	x30769
1713A	Traveling Salesman Problem geometry, greedy, implementation	800	x22078
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21719
1712A	Wonderful Permutation greedy, implementation	800	x24206
1711A	Perfect Permutation constructive algorithms	800	x25328
1709A	Three Doors brute force, greedy, implementation, math	800	x29897
1708A	Difference Operations greedy, math	800	x21872
1706A	Another String Minimization Problem 2-sat, constructive algorithms, greedy, string suffix structures, strings	800	x23107
1705A	Mark the Photographer greedy, sortings	800	x25432
1704A	Two 0-1 Sequences constructive algorithms, greedy	800	x16085
1703C	Cypher brute force, implementation, strings	800	x36258
1703B	ICPC Balloons data structures, implementation	800	x51267
1703A	YES or YES? brute force, implementation, strings	800	x72928
1702B	Polycarp Writes a String from Memory greedy	800	x27847
1702A	Round Down the Price constructive algorithms	800	x35274
1701B	Permutation greedy	800	x20278
1701A	Grass Field implementation	800	x26495
1700A	Optimal Path constructive algorithms, greedy, math	800	x23009
1699A	The Third Three Number Problem constructive algorithms, math	800	x24129
1698B	Rising Sand constructive algorithms, greedy, implementation	800	x21015
1698A	XOR Mixup bitmasks, brute force	800	x29617
1697A	Parkway Walk greedy, implementation	800	x25859
1696A	NIT orz! bitmasks, greedy	800	x18996
1695A	Subrectangle Guess games	800	x16423
1694A	Creep greedy, implementation	800	x22828
1692C	Where's the Bishop? implementation	800	x34875
1692B	All Distinct greedy, sortings	800	x34827
1692A	Marathon implementation	800	x67757
1691A	Beat The Odds brute force, greedy, math	800	x30768
1690C	Restoring the Duration of Tasks data structures, greedy, implementation	800	x26408
1690B	Array Decrements greedy, implementation	800	x25744
1690A	Print a Pedestal (Codeforces logo?) constructive algorithms, greedy	800	x33863
1689A	Lex String brute force, greedy, implementation, sortings, two pointers	800	x16874
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x18375
1688A	Cirno's Perfect Bitmasks Classroom bitmasks, brute force	800	x21892
1686B	Odd Subarrays dp, greedy	800	x18412
1686A	Everything Everywhere All But One greedy	800	x20553
1684B	Z mod X = C constructive algorithms, math	800	x21113
1684A	Digit Minimization constructive algorithms, games, math, strings	800	x24053
1682A	Palindromic Indices greedy, strings	800	x19359
1681B	Card Trick implementation, math	800	x20228
1681A	Game with Cards games, greedy	800	x21080
1680B	Robots implementation	800	x18501
1680A	Minimums and Maximums brute force, math	800	x21700
1678B1	Tokitsukaze and Good 01-String (easy version) implementation	800	x16012
1678A	Tokitsukaze and All Zero Sequence implementation	800	x18299
1676C	Most Similar Words brute force, greedy, implementation, implementation, math, strings	800	x30717
1676B	Equal Candies greedy, math, sortings	800	x50001
1676A	Lucky? implementation	800	x66992
1675A	Food for Animals greedy, math	800	x33699
1674B	Dictionary combinatorics, math	800	x26680
1674A	Number Transformation constructive algorithms, math	800	x26503
1673A	Subtle Substring Subtraction games, greedy, strings	800	x18521
1672B	I love AAAB constructive algorithms, implementation	800	x15976
1672A	Log Chopping games, implementation, math	800	x16216
1671A	String Building implementation	800	x20625
1670A	Prof. Slim greedy, implementation, sortings	800	x15499
1669C	Odd/Even Increments greedy, greedy, implementation, math	800	x35864
1669B	Triple implementation, sortings	800	x44865
1669A	Division? implementation	800	x66447
1668A	Direction Change implementation, math	800	x16373
1665A	GCD vs LCM constructive algorithms, math	800	x23860
1661A	Array Balancing greedy, math	800	x18476
1660B	Vlad and Candies math	800	x28293
1660A	Vasya and Coins greedy, math	800	x36387
1658B	Marin and Anti-coprime Permutation combinatorics, math, number theory	800	x18711
1658A	Marin and Photoshoot constructive algorithms, implementation, math	800	x20407
1657B	XY Sequence greedy	800	x22952
1657A	Integer Moves brute force, math	800	x24105
1656A	Good Pairs math, sortings	800	x19763
1654B	Prefix Removals strings	800	x15678
1654A	Maximum Cake Tastiness brute force, greedy, implementation, sortings	800	x18738
1651B	Prove Him Wrong constructive algorithms, greedy	800	x19735
1651A	Playoff implementation	800	x25800
1650A	Deletions of Two Adjacent Letters implementation, strings	800	x35088
1649A	Game implementation	800	x15624
1647A	Madoka and Math Dad implementation, math	800	x22891
1646B	Quality vs Quantity brute force, constructive algorithms, greedy, sortings, two pointers	800	x21331
1646A	Square Counting math	800	x24422
1644B	Anti-Fibonacci Permutation brute force, constructive algorithms, implementation	800	x20779
1644A	Doors and Keys implementation	800	x27516
1642A	Hard Way geometry	800	x16270