Problemset - Codeforces

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Codeforces Round (Div. 3)
32:45:02
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constructive algorithms

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Problems

#	Name
1715B	Beautiful Array constructive algorithms, greedy, math	1000	x20047
1758B	XOR = Average constructive algorithms	900	x20066
1407A	Ahahahahahahahaha constructive algorithms, math	1100	x20068
1658A	Marin and Photoshoot constructive algorithms, implementation, math	800	x20125
1436B	Prime Square constructive algorithms, math	900	x20206
1496A	Split it! brute force, constructive algorithms, greedy, strings	900	x20248
1375C	Element Extermination constructive algorithms, data structures, greedy	1400	x20414
682A	Alyona and Numbers constructive algorithms, math, number theory	1100	x20430
1644B	Anti-Fibonacci Permutation brute force, constructive algorithms, implementation	800	x20437
1430A	Number of Apartments brute force, constructive algorithms, math	900	x20448
1684B	Z mod X = C constructive algorithms, math	800	x20586
1698B	Rising Sand constructive algorithms, greedy, implementation	800	x20639
1506D	Epic Transformation constructive algorithms, data structures, greedy	1400	x20678
1713B	Optimal Reduction constructive algorithms, sortings	1000	x20715
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x20725
1401B	Ternary Sequence constructive algorithms, greedy, math	1100	x20728
1860A	Not a Substring constructive algorithms, strings	900	x20748
1632B	Roof Construction bitmasks, constructive algorithms	1000	x20786
1555C	Coin Rows brute force, constructive algorithms, dp, implementation	1300	x20824
1646B	Quality vs Quantity brute force, constructive algorithms, greedy, sortings, two pointers	800	x20853
1579E1	Permutation Minimization by Deque constructive algorithms, greedy, math	1000	x20854
1405B	Array Cancellation constructive algorithms, implementation	1000	x20976
1499A	Domino on Windowsill combinatorics, constructive algorithms, math	800	x21006
798A	Mike and palindrome brute force, constructive algorithms, strings	1000	x21034
1838A	Blackboard List constructive algorithms, math	800	x21038
1780A	Hayato and School constructive algorithms, greedy	800	x21055
1837C	Best Binary String constructive algorithms, greedy	1000	x21072
1879B	Chips on the Board constructive algorithms, greedy	900	x21081
1716B	Permutation Chain constructive algorithms, math	800	x21185
1691B	Shoe Shuffling constructive algorithms, greedy, implementation, two pointers	1000	x21192
1620A	Equal or Not Equal constructive algorithms, dsu, implementation	800	x21195
1638A	Reverse constructive algorithms, greedy, math	800	x21209
1455B	Jumps constructive algorithms, math	1200	x21215
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21218
1890A	Doremy's Paint 3 constructive algorithms	800	x21234
1405A	Permutation Forgery constructive algorithms	800	x21237
1574A	Regular Bracket Sequences constructive algorithms	800	x21294
1739B	Array Recovery constructive algorithms, greedy, math	1100	x21369
1504A	Déjà Vu constructive algorithms, strings	800	x21391
1747B	BAN BAN constructive algorithms	900	x21551
1900A	Cover in Water constructive algorithms, greedy, implementation, strings	800	x21624
1512D	Corrupted Array constructive algorithms, data structures, greedy	1200	x21667
1433D	Districts Connection constructive algorithms, dfs and similar	1200	x21710
1905A	Constructive Problems constructive algorithms, math	800	x21727
300A	Array brute force, constructive algorithms, implementation	1100	x21856
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x21885
1743B	Permutation Value constructive algorithms, greedy	800	x21913
1774A	Add Plus Minus Sign constructive algorithms, math	800	x21921
1511B	GCD Length constructive algorithms, math, number theory	1100	x21940
1918B	Minimize Inversions constructive algorithms, data structures, greedy, implementation, sortings	900	x21978
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x22010
1705B	Mark the Dust Sweeper constructive algorithms, greedy, implementation	900	x22156
1365C	Rotation Matching constructive algorithms, data structures, greedy, implementation	1400	x22337
1617B	GCD Problem brute force, constructive algorithms, math, number theory	900	x22364
1700A	Optimal Path constructive algorithms, greedy, math	800	x22531
1706A	Another String Minimization Problem 2-sat, constructive algorithms, greedy, string suffix structures, strings	800	x22542
1367C	Social Distance constructive algorithms, greedy, math	1300	x22577
1772C	Different Differences constructive algorithms, greedy, math	1000	x22637
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x22784
1828A	Divisible Array constructive algorithms, math	800	x22864
1779A	Hall of Fame constructive algorithms, greedy, strings	800	x22879
1665A	GCD vs LCM constructive algorithms, math	800	x22913
1779B	MKnez's ConstructiveForces Task constructive algorithms, math	900	x22970
1614A	Divan and a Store brute force, constructive algorithms, greedy	800	x23025
1861A	Prime Deletion constructive algorithms, math	800	x23061
1370B	GCD Compression constructive algorithms, math, number theory	1100	x23064
1342B	Binary Period constructive algorithms, strings	1100	x23137
1715A	Crossmarket constructive algorithms, greedy, math	800	x23173
1430C	Numbers on Whiteboard constructive algorithms, data structures, greedy, implementation, math	1000	x23287
680B	Bear and Finding Criminals constructive algorithms, implementation	1000	x23357
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x23404
1684A	Digit Minimization constructive algorithms, games, math, strings	800	x23449
1916B	Two Divisors constructive algorithms, math, number theory	1000	x23512
1621A	Stable Arrangement of Rooks constructive algorithms	800	x23533
1419D1	Sage's Birthday (easy version) binary search, constructive algorithms, greedy, sortings	1000	x23558
4B	Before an Exam constructive algorithms, greedy	1200	x23601
1699A	The Third Three Number Problem constructive algorithms, math	800	x23619
1929B	Sasha and the Drawing constructive algorithms, greedy, math	800	x23666
1627A	Not Shading constructive algorithms, implementation	800	x23782
1844A	Subtraction Game constructive algorithms, games	800	x23828
1467A	Wizard of Orz constructive algorithms, greedy, math	900	x23839
1526A	Mean Inequality constructive algorithms, sortings	800	x23849
1624C	Division by Two and Permutation constructive algorithms, flows, graph matchings, greedy, math	1100	x23983
1391A	Suborrays constructive algorithms, math	800	x23992
1333A	Little Artem constructive algorithms	1000	x24078
1831A	Twin Permutations constructive algorithms	800	x24086
1917A	Least Product constructive algorithms, math	800	x24117
1527B1	Palindrome Game (easy version) constructive algorithms, games	1200	x24143
1859B	Olya and Game with Arrays constructive algorithms, greedy, math, sortings	1000	x24151
1525B	Permutation Sort constructive algorithms, greedy	900	x24165
1841A	Game with Board constructive algorithms, games	800	x24188
1747A	Two Groups constructive algorithms, greedy	800	x24330
1758A	SSeeeeiinngg DDoouubbllee constructive algorithms, strings	800	x24342
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x24459
1916A	2023 constructive algorithms, implementation, math, number theory	800	x24460
1886A	Sum of Three brute force, constructive algorithms, math	800	x24464
1497C1	k-LCM (easy version) constructive algorithms, math	1200	x24470
1348B	Phoenix and Beauty constructive algorithms, data structures, greedy, sortings	1400	x24512
1312B	Bogosort constructive algorithms, sortings	1000	x24565
1741B	Funny Permutation constructive algorithms, math	800	x24757