Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
06:33:55
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Before contest
Codeforces Round 941 (Div. 2)
06:33:55
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constructive algorithms

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Problems

#	Name
1375C	Element Extermination constructive algorithms, data structures, greedy	1400	x20404
682A	Alyona and Numbers constructive algorithms, math, number theory	1100	x20411
1644B	Anti-Fibonacci Permutation brute force, constructive algorithms, implementation	800	x20434
1430A	Number of Apartments brute force, constructive algorithms, math	900	x20445
1684B	Z mod X = C constructive algorithms, math	800	x20584
1698B	Rising Sand constructive algorithms, greedy, implementation	800	x20636
1506D	Epic Transformation constructive algorithms, data structures, greedy	1400	x20667
1713B	Optimal Reduction constructive algorithms, sortings	1000	x20706
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x20713
1860A	Not a Substring constructive algorithms, strings	900	x20727
1401B	Ternary Sequence constructive algorithms, greedy, math	1100	x20727
1632B	Roof Construction bitmasks, constructive algorithms	1000	x20768
1555C	Coin Rows brute force, constructive algorithms, dp, implementation	1300	x20810
1579E1	Permutation Minimization by Deque constructive algorithms, greedy, math	1000	x20835
1646B	Quality vs Quantity brute force, constructive algorithms, greedy, sortings, two pointers	800	x20845
1405B	Array Cancellation constructive algorithms, implementation	1000	x20947
1499A	Domino on Windowsill combinatorics, constructive algorithms, math	800	x21005
1838A	Blackboard List constructive algorithms, math	800	x21020
798A	Mike and palindrome brute force, constructive algorithms, strings	1000	x21025
1780A	Hayato and School constructive algorithms, greedy	800	x21043
1879B	Chips on the Board constructive algorithms, greedy	900	x21054
1837C	Best Binary String constructive algorithms, greedy	1000	x21056
1890A	Doremy's Paint 3 constructive algorithms	800	x21147
1691B	Shoe Shuffling constructive algorithms, greedy, implementation, two pointers	1000	x21163
1716B	Permutation Chain constructive algorithms, math	800	x21181
1620A	Equal or Not Equal constructive algorithms, dsu, implementation	800	x21188
1638A	Reverse constructive algorithms, greedy, math	800	x21203
1455B	Jumps constructive algorithms, math	1200	x21207
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21211
1405A	Permutation Forgery constructive algorithms	800	x21236
1574A	Regular Bracket Sequences constructive algorithms	800	x21284
1739B	Array Recovery constructive algorithms, greedy, math	1100	x21357
1504A	Déjà Vu constructive algorithms, strings	800	x21387
1900A	Cover in Water constructive algorithms, greedy, implementation, strings	800	x21541
1747B	BAN BAN constructive algorithms	900	x21542
1512D	Corrupted Array constructive algorithms, data structures, greedy	1200	x21642
1433D	Districts Connection constructive algorithms, dfs and similar	1200	x21693
1905A	Constructive Problems constructive algorithms, math	800	x21705
300A	Array brute force, constructive algorithms, implementation	1100	x21841
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x21865
1743B	Permutation Value constructive algorithms, greedy	800	x21900
1774A	Add Plus Minus Sign constructive algorithms, math	800	x21916
1511B	GCD Length constructive algorithms, math, number theory	1100	x21924
1918B	Minimize Inversions constructive algorithms, data structures, greedy, implementation, sortings	900	x21942
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x21993
1705B	Mark the Dust Sweeper constructive algorithms, greedy, implementation	900	x22138
1365C	Rotation Matching constructive algorithms, data structures, greedy, implementation	1400	x22193
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x22312
1617B	GCD Problem brute force, constructive algorithms, math, number theory	900	x22351
1700A	Optimal Path constructive algorithms, greedy, math	800	x22526
1706A	Another String Minimization Problem 2-sat, constructive algorithms, greedy, string suffix structures, strings	800	x22533
1367C	Social Distance constructive algorithms, greedy, math	1300	x22574
1772C	Different Differences constructive algorithms, greedy, math	1000	x22628
1828A	Divisible Array constructive algorithms, math	800	x22855
1779A	Hall of Fame constructive algorithms, greedy, strings	800	x22868
1665A	GCD vs LCM constructive algorithms, math	800	x22905
1779B	MKnez's ConstructiveForces Task constructive algorithms, math	900	x22957
1614A	Divan and a Store brute force, constructive algorithms, greedy	800	x23017
1861A	Prime Deletion constructive algorithms, math	800	x23033
1370B	GCD Compression constructive algorithms, math, number theory	1100	x23059
1342B	Binary Period constructive algorithms, strings	1100	x23131
1715A	Crossmarket constructive algorithms, greedy, math	800	x23162
1430C	Numbers on Whiteboard constructive algorithms, data structures, greedy, implementation, math	1000	x23274
680B	Bear and Finding Criminals constructive algorithms, implementation	1000	x23327
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x23393
1684A	Digit Minimization constructive algorithms, games, math, strings	800	x23444
1916B	Two Divisors constructive algorithms, math, number theory	1000	x23473
1621A	Stable Arrangement of Rooks constructive algorithms	800	x23520
1419D1	Sage's Birthday (easy version) binary search, constructive algorithms, greedy, sortings	1000	x23543
4B	Before an Exam constructive algorithms, greedy	1200	x23570
1699A	The Third Three Number Problem constructive algorithms, math	800	x23615
1929B	Sasha and the Drawing constructive algorithms, greedy, math	800	x23619
1627A	Not Shading constructive algorithms, implementation	800	x23777
1844A	Subtraction Game constructive algorithms, games	800	x23800
1467A	Wizard of Orz constructive algorithms, greedy, math	900	x23835
1526A	Mean Inequality constructive algorithms, sortings	800	x23840
1624C	Division by Two and Permutation constructive algorithms, flows, graph matchings, greedy, math	1100	x23975
1391A	Suborrays constructive algorithms, math	800	x23981
1831A	Twin Permutations constructive algorithms	800	x24043
1917A	Least Product constructive algorithms, math	800	x24071
1333A	Little Artem constructive algorithms	1000	x24071
1859B	Olya and Game with Arrays constructive algorithms, greedy, math, sortings	1000	x24118
1527B1	Palindrome Game (easy version) constructive algorithms, games	1200	x24121
1525B	Permutation Sort constructive algorithms, greedy	900	x24158
1841A	Game with Board constructive algorithms, games	800	x24172
1747A	Two Groups constructive algorithms, greedy	800	x24306
1758A	SSeeeeiinngg DDoouubbllee constructive algorithms, strings	800	x24334
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x24417
1886A	Sum of Three brute force, constructive algorithms, math	800	x24433
1916A	2023 constructive algorithms, implementation, math, number theory	800	x24440
1497C1	k-LCM (easy version) constructive algorithms, math	1200	x24453
1312B	Bogosort constructive algorithms, sortings	1000	x24500
1348B	Phoenix and Beauty constructive algorithms, data structures, greedy, sortings	1400	x24501
1741B	Funny Permutation constructive algorithms, math	800	x24738
1711A	Perfect Permutation constructive algorithms	800	x24781
199A	Hexadecimal's theorem brute force, constructive algorithms, implementation, number theory	900	x25003
1935A	Entertainment in MAC constructive algorithms, strings	800	x25218
1339B	Sorted Adjacent Differences constructive algorithms, sortings	1200	x25515
1490B	Balanced Remainders brute force, constructive algorithms, math	1000	x25560
1674A	Number Transformation constructive algorithms, math	800	x25626