Problemset - Codeforces

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Codeforces Round 954 (Div. 3)
6 days

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Difficulty: —

math

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Problems

#	Name
1585D	Yet Another Sorting Problem data structures, math	1900	x3673
1584D	Guess the Permutation binary search, combinatorics, interactive, math	2000	x3582
1584C	Two Arrays greedy, math, sortings	900	x16086
1584B	Coloring Rectangles greedy, math	1000	x13161
1584A	Mathematical Addition math	800	x14681
1583G	Omkar and Time Travel data structures, math	3000	x405
1583A	Windblume Ode math, number theory	800	x13575
1582E	Pchelyonok and Segments binary search, data structures, dp, greedy, math	2000	x3617
1582D	Vupsen, Pupsen and 0 constructive algorithms, math	1600	x10218
1582B	Luntik and Subsequences combinatorics, math	900	x19272
1582A	Luntik and Concerts math	800	x18339
1581B	Diameter of Graph constructive algorithms, graphs, greedy, math	1200	x11108
1581A	CQXYM Count Permutations combinatorics, math, number theory	800	x13310
1580F	Problems for Codeforces combinatorics, fft, math	3300	x131
1579F	Array Stabilization (AND version) brute force, graphs, math, number theory, shortest paths	1700	x4622
1579E1	Permutation Minimization by Deque constructive algorithms, greedy, math	1000	x21027
1579A	Casimir's String Solitaire math, strings	800	x38089
1578G	Game of Chance math, probabilities	3500	x35
1578E	Easy Scheduling implementation, math	1200	x3747
1575K	Knitting Batik implementation, math	2200	x667
1575G	GCD Festival math, number theory	2200	x652
1575F	Finding Expected Value math	2900	x110
1574E	Coloring combinatorics, constructive algorithms, implementation, math	2500	x879
1574B	Combinatorics Homework combinatorics, greedy, math	1100	x17103
1573B	Swaps greedy, math, sortings	1400	x14246
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x325
1571B	Epic Novel *special problem, math	1300	x692
1569C	Jury Meeting combinatorics, math	1500	x11756
1567E	Non-Decreasing Dilemma data structures, divide and conquer, math	2200	x3535
1567D	Expression Evaluation Error constructive algorithms, greedy, implementation, math	2000	x4427
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x11920
1566H	Xor-quiz constructive algorithms, dp, interactive, math, number theory	3200	x126
1566A	Median Maximization binary search, greedy, math	800	x22874
1562F	Tubular Bells interactive, math, number theory, probabilities	2900	x376
1562D2	Two Hundred Twenty One (hard version) data structures, math	2200	x2084
1562D1	Two Hundred Twenty One (easy version) data structures, dp, math	1700	x6216
1562C	Rings constructive algorithms, math	1500	x13000
1562B	Scenes From a Memory brute force, constructive algorithms, implementation, math, number theory	1000	x19261
1562A	The Miracle and the Sleeper greedy, math	800	x25236
1561D1	Up the Strip (simplified version) brute force, data structures, dp, math, number theory	1700	x5475
1560D	Make a Power of Two greedy, math, strings	1300	x17777
1560C	Infinity Table implementation, math	800	x26211
1560B	Who's Opposite? math	800	x34944
1559E	Mocha and Stars combinatorics, dp, fft, math, number theory	2200	x2232
1559A	Mocha and Math bitmasks, constructive algorithms, math	900	x29412
1558B	Up the Strip brute force, dp, math, number theory, two pointers	1900	x4671
1558A	Charmed by the Game brute force, math	1300	x10955
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8390
1557A	Ezzat and Two Subsequences brute force, math, sortings	800	x27583
1556H	DIY Tree graphs, greedy, math, probabilities	3300	x327
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1187
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x6635
1556A	A Variety of Operations math	800	x17934
1555A	PizzaForces brute force, math	900	x27496
1554E	You dfs and similar, dp, math, number theory	2600	x1191
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12530
1553I	Stairs combinatorics, divide and conquer, dp, fft, math	3400	x198
1553G	Common Divisor Graph brute force, constructive algorithms, dsu, graphs, hashing, math, number theory	2700	x983
1553F	Pairwise Modulo data structures, math	2300	x2126
1553E	Permutation Shift brute force, combinatorics, constructive algorithms, dfs and similar, dsu, graphs, math	2100	x3260
1553A	Digits Sum math, number theory	800	x30383
1552I	Organizing a Music Festival dfs and similar, math	3400	x122
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x6760
1551D2	Domino (hard version) constructive algorithms, implementation, math	2100	x2679
1551D1	Domino (easy version) constructive algorithms, math	1700	x6905
1551A	Polycarp and Coins greedy, math	800	x49051
1550D	Excellent Arrays binary search, combinatorics, constructive algorithms, implementation, math, sortings, two pointers	2300	x1792
1550B	Maximum Cost Deletion greedy, math	1000	x25908
1550A	Find The Array greedy, math	800	x27755
1549A	Gregor and Cryptography math, number theory	800	x31692
1548E	Gregor and the Two Painters data structures, divide and conquer, graphs, greedy, math	3400	x344
1548D2	Gregor and the Odd Cows (Hard) brute force, geometry, math, number theory	3300	x239
1548D1	Gregor and the Odd Cows (Easy) bitmasks, geometry, math, number theory	2300	x1435
1548C	The Three Little Pigs combinatorics, dp, fft, math	2500	x1765
1548B	Integers Have Friends binary search, data structures, divide and conquer, math, number theory, two pointers	1800	x9437
1547A	Shortest Path with Obstacle implementation, math	800	x30030
1546B	AquaMoon and Stolen String interactive, math	1200	x12908
1545D	AquaMoon and Wrong Coordinate constructive algorithms, interactive, math	3000	x469
1545B	AquaMoon and Chess combinatorics, math	1900	x5695
1543E	The Final Pursuit bitmasks, constructive algorithms, divide and conquer, graphs, greedy, math	2700	x397
1543D2	RPD and Rap Sheet (Hard Version) brute force, constructive algorithms, interactive, math	2200	x1955
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7478
1543C	Need for Pink Slips bitmasks, brute force, dfs and similar, implementation, math, probabilities	1900	x5209
1543B	Customising the Track combinatorics, greedy, math	900	x22778
1543A	Exciting Bets greedy, math, number theory	900	x26873
1542E2	Abnormal Permutation Pairs (hard version) combinatorics, dp, fft, math	2700	x819
1542E1	Abnormal Permutation Pairs (easy version) combinatorics, dp, fft, math	2400	x1199
1542D	Priority Queue combinatorics, dp, implementation, math, ternary search	2200	x2544
1542C	Strange Function math, number theory	1600	x13697
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x22319
1542A	Odd Set math	800	x42949
1541B	Pleasant Pairs brute force, implementation, math, number theory	1200	x26986
1540E	Tasty Dishes math, matrices	3500	x102
1540C2	Converging Array (Hard Version) dp, math	2900	x442
1540C1	Converging Array (Easy Version) dp, math	2700	x603
1540B	Tree Array brute force, combinatorics, dp, graphs, math, probabilities, trees	2300	x2508
1539A	Contest Start combinatorics, geometry, greedy, math	1000	x19713
1538G	Gift Set binary search, greedy, math, ternary search	2100	x4410
1538F	Interesting Function binary search, dp, math, number theory	1500	x18602
1538D	Another Problem About Dividing Numbers constructive algorithms, math, number theory	1700	x13222