Problemset - Codeforces

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Codeforces Round 988 (Div. 3)
38:03:00
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Problems

#	Name
1560E	Polycarp and String Transformation binary search, implementation, sortings, strings	1800	x8096
1560D	Make a Power of Two greedy, math, strings	1300	x18273
1560C	Infinity Table implementation, math	800	x26710
1560B	Who's Opposite? math	800	x35883
1560A	Dislike of Threes implementation	800	x60759
1559E	Mocha and Stars combinatorics, dp, fft, math, number theory	2200	x2326
1559D2	Mocha and Diana (Hard Version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, trees, two pointers	2500	x2672
1559D1	Mocha and Diana (Easy Version) brute force, constructive algorithms, dsu, graphs, greedy, trees	1400	x13961
1559C	Mocha and Hiking constructive algorithms, graphs	1200	x20625
1559B	Mocha and Red and Blue dp, greedy	900	x22646
1559A	Mocha and Math bitmasks, constructive algorithms, math	900	x31895
1558F	Strange Sort data structures, sortings	3300	x393
1558E	Down Below binary search, dfs and similar, graphs, greedy, meet-in-the-middle, shortest paths	3000	x478
1558D	Top-Notch Insertions combinatorics, data structures	2600	x976
1558C	Bottom-Tier Reversals constructive algorithms, greedy	2000	x3303
1558B	Up the Strip brute force, dp, math, number theory, two pointers	1900	x4824
1558A	Charmed by the Game brute force, math	1300	x11123
1557E	Assiut Chess brute force, constructive algorithms, interactive	2800	x718
1557D	Ezzat and Grid data structures, dp, greedy	2200	x2570
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8654
1557B	Moamen and k-subarrays greedy, sortings	1100	x23529
1557A	Ezzat and Two Subsequences brute force, math, sortings	800	x27983
1556H	DIY Tree graphs, greedy, math, probabilities	3300	x371
1556G	Gates to Another World bitmasks, data structures, dsu, two pointers	3300	x340
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1258
1556E	Equilibrium data structures, dp, greedy	2200	x2730
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x7052
1556C	Compressed Bracket Sequence brute force, implementation	1800	x5824
1556B	Take Your Places! implementation	1300	x12736
1556A	A Variety of Operations math	800	x18106
1555F	Good Graph data structures, dsu, graphs, trees	2700	x863
1555E	Boring Segments data structures, sortings, trees, two pointers	2100	x4064
1555D	Say No to Palindromes brute force, constructive algorithms, dp, strings	1600	x12513
1555C	Coin Rows brute force, constructive algorithms, dp, implementation	1300	x21931
1555B	Two Tables brute force	1300	x16148
1555A	PizzaForces brute force, math	900	x28249
1554E	You dfs and similar, dp, math, number theory	2600	x1234
1554D	Diane constructive algorithms, greedy, strings	1800	x9540
1554C	Mikasa binary search, bitmasks, greedy, implementation	1800	x8964
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12859
1554A	Cherry greedy	800	x29434
1553I	Stairs combinatorics, divide and conquer, dp, fft, math	3400	x205
1553H	XOR and Distance bitmasks, divide and conquer, trees	2900	x709
1553G	Common Divisor Graph brute force, constructive algorithms, dsu, graphs, hashing, math, number theory	2700	x1050
1553F	Pairwise Modulo data structures, math	2300	x2241
1553E	Permutation Shift brute force, combinatorics, constructive algorithms, dfs and similar, dsu, graphs, math	2100	x3358
1553D	Backspace dp, greedy, strings, two pointers	1500	x13829
1553C	Penalty bitmasks, brute force, dp, greedy	1200	x18010
1553B	Reverse String brute force, dp, hashing, implementation, strings	1300	x14223
1553A	Digits Sum math, number theory	800	x31225
1552I	Organizing a Music Festival dfs and similar, math	3400	x130
1552H	Guess the Perimeter binary search, interactive, number theory	3300	x393
1552G	A Serious Referee bitmasks, brute force, dfs and similar, sortings	3000	x534
1552F	Telepanting binary search, data structures, dp, sortings	2200	x2967
1552E	Colors and Intervals constructive algorithms, data structures, greedy, sortings	2300	x1901
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x7077
1552C	Maximize the Intersections combinatorics, constructive algorithms, geometry, greedy, sortings	1800	x5944
1552B	Running for Gold combinatorics, graphs, greedy, sortings	1500	x15534
1552A	Subsequence Permutation sortings, strings	800	x23935
1551F	Equidistant Vertices brute force, combinatorics, dfs and similar, dp, trees	2200	x1854
1551E	Fixed Points binary search, brute force, dp	2000	x3975
1551D2	Domino (hard version) constructive algorithms, implementation, math	2100	x2778
1551D1	Domino (easy version) constructive algorithms, math	1700	x7133
1551C	Interesting Story greedy, sortings, strings	1500	x13388
1551B2	Wonderful Coloring - 2 binary search, constructive algorithms, data structures, greedy	1400	x15592
1551B1	Wonderful Coloring - 1 greedy, strings	800	x29567
1551A	Polycarp and Coins greedy, math	800	x51438
1550F	Jumping Around binary search, data structures, divide and conquer, dp, dsu, graphs, shortest paths	2700	x679
1550E	Stringforces binary search, bitmasks, brute force, dp, strings, two pointers	2500	x1548
1550D	Excellent Arrays binary search, combinatorics, constructive algorithms, implementation, math, sortings, two pointers	2300	x1855
1550C	Manhattan Subarrays brute force, geometry, greedy, implementation	1700	x10237
1550B	Maximum Cost Deletion greedy, math	1000	x26576
1550A	Find The Array greedy, math	800	x28216
1549B	Gregor and the Pawn Game dfs and similar, dp, flows, graph matchings, graphs, greedy, implementation	800	x24545
1549A	Gregor and Cryptography math, number theory	800	x32712
1548E	Gregor and the Two Painters data structures, divide and conquer, graphs, greedy, math	3400	x463
1548D2	Gregor and the Odd Cows (Hard) brute force, geometry, math, number theory	3300	x264
1548D1	Gregor and the Odd Cows (Easy) bitmasks, geometry, math, number theory	2300	x1476
1548C	The Three Little Pigs combinatorics, dp, fft, math	2500	x1841
1548B	Integers Have Friends binary search, data structures, divide and conquer, math, number theory, two pointers	1800	x9976
1548A	Web of Lies brute force, graphs, greedy	1400	x16524
1547G	How Many Paths? dfs and similar, dp, graphs, trees	2100	x3025
1547F	Array Stabilization (GCD version) binary search, brute force, data structures, divide and conquer, number theory, two pointers	1900	x5909
1547E	Air Conditioners data structures, dp, implementation, shortest paths, sortings, two pointers	1500	x14572
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x16808
1547C	Pair Programming greedy, two pointers	1100	x22794
1547B	Alphabetical Strings greedy, implementation, strings	800	x26478
1547A	Shortest Path with Obstacle implementation, math	800	x30565
1546B	AquaMoon and Stolen String interactive, math	1200	x13192
1546A	AquaMoon and Two Arrays brute force, greedy	800	x18236
1545F	AquaMoon and Potatoes brute force, data structures, dp	3500	x110
1545E2	AquaMoon and Time Stop (hard version) data structures, dp	3500	x88
1545E1	AquaMoon and Time Stop (easy version) data structures, dp	3500	x84
1545D	AquaMoon and Wrong Coordinate constructive algorithms, interactive, math	3000	x498
1545C	AquaMoon and Permutations 2-sat, brute force, combinatorics, constructive algorithms, graph matchings, graphs	2800	x639
1545B	AquaMoon and Chess combinatorics, math	1900	x6001
1545A	AquaMoon and Strange Sort sortings	1500	x13984
1543E	The Final Pursuit bitmasks, constructive algorithms, divide and conquer, graphs, greedy, math	2700	x414
1543D2	RPD and Rap Sheet (Hard Version) brute force, constructive algorithms, interactive, math	2200	x2024
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7637