Problemset - Codeforces

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Codeforces Round 988 (Div. 3)
43:06:24
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Problems

#	Name
1660F2	Promising String (hard version) data structures, implementation, math, strings	2100	x2744
1660F1	Promising String (easy version) brute force, implementation, math, strings	1700	x7325
1660E	Matrix and Shifts brute force, constructive algorithms, greedy, implementation	1600	x7367
1660D	Maximum Product Strikes Back brute force, implementation, math, two pointers	1600	x8747
1660C	Get an Even String dp, greedy, strings	1300	x19691
1660B	Vlad and Candies math	800	x28187
1660A	Vasya and Coins greedy, math	800	x36232
1659F	Tree and Permutation Game dfs and similar, games, graphs, trees	3000	x192
1659E	AND-MEX Walk bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs	2200	x1605
1659D	Reverse Sort Sum constructive algorithms, data structures, greedy, implementation, math, two pointers	1900	x4039
1659C	Line Empire binary search, brute force, dp, greedy, implementation, math	1500	x10670
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x10998
1659A	Red Versus Blue constructive algorithms, greedy, implementation, math	1000	x19181
1658F	Juju and Binary String brute force, constructive algorithms, greedy, math	2700	x773
1658E	Gojou and Matrix Game data structures, dp, games, hashing, implementation, math, number theory, sortings	2500	x1057
1658D2	388535 (Hard Version) bitmasks, brute force, data structures, math	2300	x2589
1658D1	388535 (Easy Version) bitmasks, math	1600	x9155
1658C	Shinju and the Lost Permutation constructive algorithms, math	1700	x9388
1658B	Marin and Anti-coprime Permutation combinatorics, math, number theory	800	x18655
1658A	Marin and Photoshoot constructive algorithms, implementation, math	800	x20373
1657F	Words on Tree 2-sat, dfs and similar, dsu, graphs, trees	2600	x579
1657E	Star MST combinatorics, dp, graph matchings, math	2200	x2131
1657D	For Gamers. By Gamers. binary search, brute force, greedy, math, sortings	2000	x4923
1657C	Bracket Sequence Deletion greedy, implementation	1200	x16879
1657B	XY Sequence greedy	800	x22879
1657A	Integer Moves brute force, math	800	x24026
1656I	Neighbour Ordering constructive algorithms, graphs	3500	x105
1656H	Equal LCM Subsets data structures, math, number theory	3200	x595
1656G	Cycle Palindrome constructive algorithms, graphs, math	3200	x385
1656F	Parametric MST binary search, constructive algorithms, graphs, greedy, math, sortings	2600	x1069
1656E	Equal Tree Sums constructive algorithms, dfs and similar, math, trees	2200	x3474
1656D	K-good constructive algorithms, math, number theory	1900	x6904
1656C	Make Equal With Mod constructive algorithms, math, number theory, sortings	1200	x19307
1656B	Subtract Operation data structures, greedy, math, two pointers	1100	x19175
1656A	Good Pairs math, sortings	800	x19697
1654H	Three Minimums combinatorics, constructive algorithms, divide and conquer, dp, fft, math	3500	x79
1654G	Snowy Mountain data structures, dfs and similar, graphs, greedy, shortest paths, trees	2900	x406
1654F	Minimal String Xoration bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings	2800	x1211
1654E	Arithmetic Operations brute force, data structures, graphs, math	2300	x2103
1654D	Potion Brewing Class dfs and similar, math, number theory, trees	2100	x2865
1654C	Alice and the Cake data structures, greedy, implementation, sortings	1400	x13561
1654B	Prefix Removals strings	800	x15654
1654A	Maximum Cake Tastiness brute force, greedy, implementation, sortings	800	x18694
1651F	Tower Defense binary search, brute force, data structures	3000	x381
1651E	Sum of Matchings brute force, combinatorics, constructive algorithms, dfs and similar, graph matchings, greedy, math	2600	x523
1651D	Nearest Excluded Points binary search, data structures, dfs and similar, graphs, shortest paths	1900	x5191
1651C	Fault-tolerant Network brute force, data structures, implementation	1500	x10765
1651B	Prove Him Wrong constructive algorithms, greedy	800	x19688
1651A	Playoff implementation	800	x25745
1650G	Counting Shortcuts data structures, dfs and similar, dp, graphs, shortest paths	2100	x2526
1650F	Vitaly and Advanced Useless Algorithms dp, greedy, implementation	2200	x1496
1650E	Rescheduling the Exam binary search, data structures, greedy, implementation, math, sortings	1900	x4170
1650D	Twist the Permutation brute force, constructive algorithms, implementation, math	1300	x13103
1650C	Weight of the System of Nested Segments greedy, hashing, implementation, sortings	1200	x16831
1650B	DIV + MOD math	900	x27819
1650A	Deletions of Two Adjacent Letters implementation, strings	800	x34867
1649B	Game of Ball Passing greedy, implementation	1300	x13109
1649A	Game implementation	800	x15584
1648F	Two Avenues data structures, dfs and similar, graphs	3500	x135
1648E	Air Reform data structures, dfs and similar, divide and conquer, dsu, graphs, implementation, trees	3200	x414
1648D	Serious Business data structures, divide and conquer, dp, implementation, shortest paths	2800	x890
1648C	Tyler and Strings combinatorics, data structures, implementation	1900	x2996
1648B	Integral Array brute force, constructive algorithms, data structures, math	1800	x6485
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x13121
1647F	Madoka and Laziness dp, greedy	3100	x457
1647E	Madoka and the Sixth-graders data structures, dfs and similar, greedy	2500	x997
1647D	Madoka and the Best School in Russia constructive algorithms, dp, math, number theory	1900	x5314
1647C	Madoka and Childish Pranks constructive algorithms, greedy	1300	x12652
1647B	Madoka and the Elegant Gift brute force, constructive algorithms, graphs, implementation	1200	x15447
1647A	Madoka and Math Dad implementation, math	800	x22823
1646F	Playing Around the Table constructive algorithms, greedy, implementation	2900	x529
1646E	Power Board brute force, dp, math, number theory	2200	x2472
1646D	Weight the Tree constructive algorithms, dfs and similar, dp, implementation, trees	2000	x3796
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x14313
1646B	Quality vs Quantity brute force, constructive algorithms, greedy, sortings, two pointers	800	x21235
1646A	Square Counting math	800	x24349
1644F	Basis combinatorics, fft, math, number theory	2900	x329
1644E	Expand the Path brute force, combinatorics, data structures, implementation, math	1900	x3123
1644D	Cross Coloring data structures, implementation, math	1700	x7305
1644C	Increase Subarray Sums brute force, dp, greedy, implementation	1400	x13861
1644B	Anti-Fibonacci Permutation brute force, constructive algorithms, implementation	800	x20715
1644A	Doors and Keys implementation	800	x27443
1642B	Power Walking greedy	900	x17024
1642A	Hard Way geometry	800	x16233
1641F	Covering Circle geometry	3500	x101
1641E	Special Positions combinatorics, divide and conquer, fft, math	3300	x210
1641D	Two Arrays bitmasks, brute force, combinatorics, greedy, hashing, math, two pointers	2700	x1182
1641C	Anonymity Is Important binary search, brute force, data structures, dsu, greedy, sortings	2200	x2495
1641B	Repetitions Decoding constructive algorithms, implementation, sortings	2000	x3825
1641A	Great Sequence brute force, greedy, sortings	1200	x17965
1638F	Two Posters brute force, data structures, greedy, two pointers	3200	x227
1638E	Colorful Operations brute force, data structures, implementation	2400	x1944
1638D	Big Brush constructive algorithms, data structures, greedy, implementation	2000	x4226
1638C	Inversion Graph data structures, dsu, graphs, math	1300	x14763
1638B	Odd Swap Sort data structures, math, sortings	1100	x20966
1638A	Reverse constructive algorithms, greedy, math	800	x21508
1637H	Minimize Inversions Number data structures, greedy, math, sortings	3500	x325
1637G	Birthday constructive algorithms, greedy, math	3000	x516
1637F	Towers constructive algorithms, dfs and similar, dp, greedy, trees	2500	x1792
1637E	Best Pair binary search, brute force, implementation	2100	x3384