Problemset - Codeforces

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Codeforces Global Round 26
08:52:03
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Problems

#	Name
1581A	CQXYM Count Permutations combinatorics, math, number theory	800	x13304
1580F	Problems for Codeforces combinatorics, fft, math	3300	x131
1579F	Array Stabilization (AND version) brute force, graphs, math, number theory, shortest paths	1700	x4613
1579E1	Permutation Minimization by Deque constructive algorithms, greedy, math	1000	x21001
1579A	Casimir's String Solitaire math, strings	800	x38010
1578G	Game of Chance math, probabilities	3500	x35
1578E	Easy Scheduling implementation, math	1200	x3741
1575K	Knitting Batik implementation, math	2200	x658
1575G	GCD Festival math, number theory	2200	x650
1575F	Finding Expected Value math	2900	x110
1574E	Coloring combinatorics, constructive algorithms, implementation, math	2500	x879
1574B	Combinatorics Homework combinatorics, greedy, math	1100	x17084
1573B	Swaps greedy, math, sortings	1400	x14229
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x323
1571B	Epic Novel *special problem, math	1300	x691
1569C	Jury Meeting combinatorics, math	1500	x11734
1567E	Non-Decreasing Dilemma data structures, divide and conquer, math	2200	x3527
1567D	Expression Evaluation Error constructive algorithms, greedy, implementation, math	2000	x4424
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x11900
1566H	Xor-quiz constructive algorithms, dp, interactive, math, number theory	3200	x126
1566A	Median Maximization binary search, greedy, math	800	x22842
1562F	Tubular Bells interactive, math, number theory, probabilities	2900	x374
1562D2	Two Hundred Twenty One (hard version) data structures, math	2200	x2081
1562D1	Two Hundred Twenty One (easy version) data structures, dp, math	1700	x6209
1562C	Rings constructive algorithms, math	1500	x12972
1562B	Scenes From a Memory brute force, constructive algorithms, implementation, math, number theory	1000	x19235
1562A	The Miracle and the Sleeper greedy, math	800	x25228
1561D1	Up the Strip (simplified version) brute force, data structures, dp, math, number theory	1700	x5469
1560D	Make a Power of Two greedy, math, strings	1300	x17750
1560C	Infinity Table implementation, math	800	x26189
1560B	Who's Opposite? math	800	x34885
1559E	Mocha and Stars combinatorics, dp, fft, math, number theory	2200	x2229
1559A	Mocha and Math bitmasks, constructive algorithms, math	900	x29220
1558B	Up the Strip brute force, dp, math, number theory, two pointers	1900	x4662
1558A	Charmed by the Game brute force, math	1300	x10952
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8374
1557A	Ezzat and Two Subsequences brute force, math, sortings	800	x27563
1556H	DIY Tree graphs, greedy, math, probabilities	3300	x325
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1182
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x6607
1556A	A Variety of Operations math	800	x17928
1555A	PizzaForces brute force, math	900	x27439
1554E	You dfs and similar, dp, math, number theory	2600	x1188
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12510
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	x982
1553F	Pairwise Modulo data structures, math	2300	x2125
1553E	Permutation Shift brute force, combinatorics, constructive algorithms, dfs and similar, dsu, graphs, math	2100	x3257
1553A	Digits Sum math, number theory	800	x30332
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	x6748
1551D2	Domino (hard version) constructive algorithms, implementation, math	2100	x2675
1551D1	Domino (easy version) constructive algorithms, math	1700	x6895
1551A	Polycarp and Coins greedy, math	800	x48907
1550D	Excellent Arrays binary search, combinatorics, constructive algorithms, implementation, math, sortings, two pointers	2300	x1791
1550B	Maximum Cost Deletion greedy, math	1000	x25868
1550A	Find The Array greedy, math	800	x27738
1549A	Gregor and Cryptography math, number theory	800	x31614
1548E	Gregor and the Two Painters data structures, divide and conquer, graphs, greedy, math	3400	x343
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	x1745
1548B	Integers Have Friends binary search, data structures, divide and conquer, math, number theory, two pointers	1800	x9409
1547A	Shortest Path with Obstacle implementation, math	800	x29995
1546B	AquaMoon and Stolen String interactive, math	1200	x12896
1545D	AquaMoon and Wrong Coordinate constructive algorithms, interactive, math	3000	x468
1545B	AquaMoon and Chess combinatorics, math	1900	x5681
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	x1954
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7473
1543C	Need for Pink Slips bitmasks, brute force, dfs and similar, implementation, math, probabilities	1900	x5201
1543B	Customising the Track combinatorics, greedy, math	900	x22749
1543A	Exciting Bets greedy, math, number theory	900	x26753
1542E2	Abnormal Permutation Pairs (hard version) combinatorics, dp, fft, math	2700	x816
1542E1	Abnormal Permutation Pairs (easy version) combinatorics, dp, fft, math	2400	x1195
1542D	Priority Queue combinatorics, dp, implementation, math, ternary search	2200	x2543
1542C	Strange Function math, number theory	1600	x13653
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x22260
1542A	Odd Set math	800	x42798
1541B	Pleasant Pairs brute force, implementation, math, number theory	1200	x26872
1540E	Tasty Dishes math, matrices	3500	x100
1540C2	Converging Array (Hard Version) dp, math	2900	x442
1540C1	Converging Array (Easy Version) dp, math	2700	x602
1540B	Tree Array brute force, combinatorics, dp, graphs, math, probabilities, trees	2300	x2506
1539A	Contest Start combinatorics, geometry, greedy, math	1000	x19685
1538G	Gift Set binary search, greedy, math, ternary search	2100	x4399
1538F	Interesting Function binary search, dp, math, number theory	1500	x18539
1538D	Another Problem About Dividing Numbers constructive algorithms, math, number theory	1700	x13179
1538C	Number of Pairs binary search, data structures, math, two pointers	1300	x27340
1538B	Friends and Candies greedy, math	800	x31241
1537F	Figure Fixing constructive algorithms, dfs and similar, dsu, graphs, greedy, math	2200	x2373
1537D	Deleting Divisors games, math, number theory	1700	x11937
1537C	Challenging Cliffs constructive algorithms, greedy, implementation, math	1200	x26583
1537B	Bad Boy constructive algorithms, greedy, math	900	x28367
1537A	Arithmetic Array greedy, math	800	x36304
1536F	Omkar and Akmar chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures	2600	x918
1536E	Omkar and Forest combinatorics, graphs, math, shortest paths	2300	x2355
1535B	Array Reodering brute force, greedy, math, number theory, sortings	900	x29791
1534C	Little Alawn's Puzzle combinatorics, dp, dsu, graphs, math	1300	x12577
1534B	Histogram Ugliness greedy, implementation, math	1100	x12401