Problemset - Codeforces

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Codeforces Round 976 (Div. 2) and Divide By Zero 9.0
02:03:39
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Problems

#	Name
1672F1	Array Shuffling constructive algorithms, graphs, greedy	2000	x3085
1672E	notepad.exe binary search, constructive algorithms, greedy, interactive	2200	x2235
1672D	Cyclic Rotation constructive algorithms, greedy, implementation, two pointers	1700	x6223
1671F	Permutation Counting brute force, combinatorics, dp, fft, math	2700	x332
1671E	Preorder combinatorics, divide and conquer, dp, dsu, hashing, sortings, trees	2100	x2742
1671D	Insert a Progression brute force, constructive algorithms, greedy	1600	x7642
1670F	Jee, You See? bitmasks, combinatorics, dp	2400	x975
1670E	Hemose on the Tree bitmasks, constructive algorithms, dfs and similar, trees	2200	x1748
1670D	Very Suspicious binary search, brute force, geometry, greedy, implementation, math	1700	x5110
1670C	Where is the Pizza? data structures, dfs and similar, dsu, graphs, implementation, math	1400	x9936
1667F	Yin Yang implementation	3500	x99
1667E	Centroid Probabilities combinatorics, dp, fft, math	3000	x648
1667D	Edge Elimination constructive algorithms, dfs and similar, dp, trees	2900	x662
1667C	Half Queen Cover constructive algorithms, math	2400	x1578
1667B	Optimal Partition data structures, dp	2100	x3686
1666L	Labyrinth dfs and similar, graphs	1800	x3106
1666K	Kingdom Partition flows	3200	x244
1666J	Job Lookup constructive algorithms, dp, shortest paths, trees	2100	x1327
1666I	Interactive Treasure Hunt brute force, constructive algorithms, geometry, interactive, math	2200	x1443
1666H	Heroes of Might math	3500	x67
1666G	Global Warming geometry, math	3100	x136
1666F	Fancy Stack combinatorics, dp, implementation	2200	x1158
1666E	Even Split binary search, constructive algorithms, greedy, math	2500	x714
1666C	Connect the Points brute force, constructive algorithms, geometry	1800	x3174
1666B	Budget Distribution	3300	x54
1666A	Admissible Map	3300	x110
1665E	MinimizOR bitmasks, brute force, data structures, divide and conquer, greedy, implementation, two pointers	2500	x1515
1665D	GCD Guess bitmasks, chinese remainder theorem, constructive algorithms, games, interactive, math, number theory	2000	x3915
1665C	Tree Infection binary search, greedy, sortings, trees	1600	x8359
1661F	Teleporters binary search, greedy	2600	x586
1661E	Narrow Components brute force, data structures, dp, dsu, math, trees	2500	x949
1661D	Progressions Covering data structures, greedy	1900	x4732
1661C	Water the Trees binary search, greedy, math	1700	x9317
1660F2	Promising String (hard version) data structures, implementation, math, strings	2100	x2713
1660F1	Promising String (easy version) brute force, implementation, math, strings	1700	x7240
1660E	Matrix and Shifts brute force, constructive algorithms, greedy, implementation	1600	x7296
1660D	Maximum Product Strikes Back brute force, implementation, math, two pointers	1600	x8647
1659F	Tree and Permutation Game dfs and similar, games, graphs, trees	3000	x191
1659E	AND-MEX Walk bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs	2200	x1553
1659D	Reverse Sort Sum constructive algorithms, data structures, greedy, implementation, math, two pointers	1900	x4008
1659C	Line Empire binary search, brute force, dp, greedy, implementation, math	1500	x10465
1658F	Juju and Binary String brute force, constructive algorithms, greedy, math	2700	x768
1658E	Gojou and Matrix Game data structures, dp, games, hashing, implementation, math, number theory, sortings	2500	x1046
1658D2	388535 (Hard Version) bitmasks, brute force, data structures, math	2300	x2535
1658D1	388535 (Easy Version) bitmasks, math	1600	x9053
1658C	Shinju and the Lost Permutation constructive algorithms, math	1700	x9315
1657F	Words on Tree 2-sat, dfs and similar, dsu, graphs, trees	2600	x574
1657E	Star MST combinatorics, dp, graph matchings, math	2200	x2078
1657D	For Gamers. By Gamers. binary search, brute force, greedy, math, sortings	2000	x4849
1656I	Neighbour Ordering constructive algorithms, graphs	3500	x104
1656H	Equal LCM Subsets data structures, math, number theory	3200	x569
1656G	Cycle Palindrome constructive algorithms, graphs, math	3200	x385
1656F	Parametric MST binary search, constructive algorithms, graphs, greedy, math, sortings	2600	x1034
1656E	Equal Tree Sums constructive algorithms, dfs and similar, math, trees	2200	x3443
1656D	K-good constructive algorithms, math, number theory	1900	x6861
1654H	Three Minimums combinatorics, constructive algorithms, divide and conquer, dp, fft, math	3500	x76
1654G	Snowy Mountain data structures, dfs and similar, graphs, greedy, shortest paths, trees	2900	x394
1654F	Minimal String Xoration bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings	2800	x1196
1654E	Arithmetic Operations brute force, data structures, graphs, math	2300	x2088
1654D	Potion Brewing Class dfs and similar, math, number theory, trees	2100	x2843
1654C	Alice and the Cake data structures, greedy, implementation, sortings	1400	x13472
1651F	Tower Defense binary search, brute force, data structures	3000	x380
1651E	Sum of Matchings brute force, combinatorics, constructive algorithms, dfs and similar, graph matchings, greedy, math	2600	x518
1651D	Nearest Excluded Points binary search, data structures, dfs and similar, graphs, shortest paths	1900	x5105
1651C	Fault-tolerant Network brute force, data structures, implementation	1500	x10699
1650G	Counting Shortcuts data structures, dfs and similar, dp, graphs, shortest paths	2100	x2481
1650F	Vitaly and Advanced Useless Algorithms dp, greedy, implementation	2200	x1444
1650E	Rescheduling the Exam binary search, data structures, greedy, implementation, math, sortings	1900	x4141
1648F	Two Avenues data structures, dfs and similar, graphs	3500	x122
1648E	Air Reform data structures, dfs and similar, divide and conquer, dsu, graphs, implementation, trees	3200	x396
1648D	Serious Business data structures, divide and conquer, dp, implementation, shortest paths	2800	x877
1648C	Tyler and Strings combinatorics, data structures, implementation	1900	x2983
1648B	Integral Array brute force, constructive algorithms, data structures, math	1800	x6426
1648A	Weird Sum combinatorics, data structures, geometry, math, matrices, sortings	1400	x12769
1647F	Madoka and Laziness dp, greedy	3100	x451
1647E	Madoka and the Sixth-graders data structures, dfs and similar, greedy	2500	x992
1647D	Madoka and the Best School in Russia constructive algorithms, dp, math, number theory	1900	x5273
1646F	Playing Around the Table constructive algorithms, greedy, implementation	2900	x524
1646E	Power Board brute force, dp, math, number theory	2200	x2431
1646D	Weight the Tree constructive algorithms, dfs and similar, dp, implementation, trees	2000	x3735
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x14080
1644F	Basis combinatorics, fft, math, number theory	2900	x326
1644E	Expand the Path brute force, combinatorics, data structures, implementation, math	1900	x3093
1644D	Cross Coloring data structures, implementation, math	1700	x7227
1644C	Increase Subarray Sums brute force, dp, greedy, implementation	1400	x13745
1641F	Covering Circle geometry	3500	x99
1641E	Special Positions combinatorics, divide and conquer, fft, math	3300	x208
1641D	Two Arrays bitmasks, brute force, combinatorics, greedy, hashing, math, two pointers	2700	x1150
1641C	Anonymity Is Important binary search, brute force, data structures, dsu, greedy, sortings	2200	x2417
1641B	Repetitions Decoding constructive algorithms, implementation, sortings	2000	x3809
1638F	Two Posters brute force, data structures, greedy, two pointers	3200	x223
1638E	Colorful Operations brute force, data structures, implementation	2400	x1903
1638D	Big Brush constructive algorithms, data structures, greedy, implementation	2000	x4193
1637H	Minimize Inversions Number data structures, greedy, math, sortings	3500	x315
1637G	Birthday constructive algorithms, greedy, math	3000	x501
1637F	Towers constructive algorithms, dfs and similar, dp, greedy, trees	2500	x1772
1637E	Best Pair binary search, brute force, implementation	2100	x3328
1637D	Yet Another Minimization Problem dp, greedy, math	1800	x7703
1635F	Closest Pair data structures, greedy	2800	x1106
1635E	Cars 2-sat, constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings	2200	x2222