Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1012C	Hills dp	1900	x3959
1012B	Chemical table constructive algorithms, dfs and similar, dsu, graphs, matrices	1900	x4483
1010D	Mars rover dfs and similar, graphs, implementation, trees	2000	x2646
1009E	Intercity Travelling combinatorics, math, probabilities	2000	x3545
1006F	Xor-Paths bitmasks, brute force, dp, meet-in-the-middle	2100	x7542
1005F	Berland and the Shortest Paths brute force, dfs and similar, graphs, shortest paths	2100	x2246
1003E	Tree Constructing constructive algorithms, graphs	2100	x3229
1002E2	Another array reconstruction algorithm *special problem	1900	x212
1002A4	Generate W state *special problem	1900	x274
1000E	We Need More Bosses dfs and similar, graphs, trees	2100	x7330
1000D	Yet Another Problem On a Subsequence combinatorics, dp	1900	x5274
999F	Cards and Joy dp	2000	x3411
999E	Reachability from the Capital dfs and similar, graphs, greedy	2000	x8469
999D	Equalize the Remainders data structures, greedy, implementation	1900	x5011
997B	Roman Digits brute force, combinatorics, dp, greedy, math	2000	x3250
995A	Tesla constructive algorithms, implementation	2100	x1863
993C	Careful Maneuvering bitmasks, brute force, geometry	2100	x1850
993B	Open Communication bitmasks, brute force	1900	x2063
992D	Nastya and a Game brute force, implementation, math	2100	x2043
990E	Post Lamps brute force, greedy	2100	x2209
988F	Rain and Umbrellas dp	2100	x2874
988E	Divisibility by 25 brute force, greedy	2100	x4543
985E	Pencils and Boxes binary search, data structures, dp, greedy, two pointers	2100	x4342
985D	Sand Fortress binary search, constructive algorithms, math	2100	x2899
982D	Shark brute force, data structures, dsu, trees	1900	x2582
981D	Bookshelves bitmasks, dp, greedy	1900	x3611
980D	Perfect Groups dp, math, number theory	2100	x3117
976E	Well played! greedy, sortings	2100	x2620
975D	Ghosts geometry, math	2000	x2437
965D	Single-use Stones binary search, flows, greedy, two pointers	1900	x3398
965C	Greedy Arkady math	2000	x2252
963B	Destruction of a Tree constructive algorithms, dfs and similar, dp, greedy, trees	2000	x3083
961E	Tufurama data structures	1900	x4377
961D	Pair Of Lines geometry	2000	x5131
960F	Pathwalks data structures, dp, graphs	2100	x3548
960D	Full Binary Tree Queries brute force, implementation, trees	2100	x1981
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x3869
959D	Mahmoud and Ehab and another array construction task constructive algorithms, greedy, math, number theory	1900	x3336
958C2	Encryption (medium) dp	2000	x1428
958A2	Death Stars (medium) hashing, strings	2000	x1100
955C	Sad powers binary search, math, number theory	2100	x2954
954G	Castle Defense binary search, data structures, greedy, two pointers	2000	x2480
954F	Runner's Problem dp, matrices, sortings	2100	x1452
954E	Water Taps binary search, greedy, sortings	2000	x2202
952E	Cheese Board *special problem	2000	x711
952B	A Map of the Cat *special problem, brute force, interactive	1900	x2145
949C	Data Center Maintenance dfs and similar, graphs	1900	x2372
940E	Cashback data structures, dp, greedy, math	2000	x4583
938D	Buy a Ticket data structures, graphs, shortest paths	2000	x7688
936B	Sleepy Game dfs and similar, dp, games, graphs	2100	x3515
935D	Fafa and Ancient Alphabet math, probabilities	1900	x2905
933B	A Determined Cleanup math	2000	x2095
930C	Teodor is not a liar! data structures, dp	1900	x2410
928D	Autocompletion *special problem, strings, trees	1900	x836
928C	Dependency management *special problem, graphs, implementation	1900	x910
926J	Segments data structures	2100	x708
926F	Mobile Communications	2000	x345
926E	Merge Equal Elements constructive algorithms, data structures	1900	x1091
920F	SUM and REPLACE brute force, data structures, dsu, number theory	2000	x9398
920E	Connected Components? data structures, dfs and similar, dsu, graphs	2100	x8191
919E	Congruence Equation chinese remainder theorem, math, number theory	2100	x2606
916B	Jamie and Binary Sequence (changed after round) bitmasks, greedy, math	2000	x2060
914D	Bash and a Tough Math Puzzle data structures, number theory	1900	x6846
912D	Fishes data structures, graphs, greedy, probabilities, shortest paths	2100	x2206
911E	Stack Sorting constructive algorithms, data structures, greedy, implementation	2000	x3019
909E	Coprocessor dfs and similar, dp, graphs, greedy	1900	x2622
909D	Colorful Points data structures, greedy, implementation	2100	x2219
900E	Maximum Questions data structures, dp, strings	2100	x1467
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x4016
899F	Letters Removing data structures, strings	2100	x2116
899E	Segments Removal data structures, dsu, flows, implementation, two pointers	2000	x3729
896B	Ithea Plays With Chtholly binary search, constructive algorithms, games, greedy, interactive	2000	x2370
895D	String Mark combinatorics, math, strings	2100	x1300
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x8017
894E	Ralph and Mushrooms dp, graphs	2100	x3607
894C	Marco and GCD Sequence constructive algorithms, math	1900	x4685
893E	Counting Arrays combinatorics, dp, math, number theory	2000	x4392
893D	Credit Card data structures, dp, greedy, implementation	1900	x3397
891B	Gluttony constructive algorithms, greedy	2000	x3303
886D	Restoration of string constructive algorithms, graphs, implementation	2000	x2079
883I	Photo Processing binary search, dp	1900	x2455
883G	Orientation of Edges dfs and similar, graphs	1900	x1566
877E	Danil and a Part-time Job bitmasks, data structures, trees	2000	x6031
877D	Olya and Energy Drinks data structures, dfs and similar, graphs, shortest paths	2100	x5379
875C	National Property 2-sat, dfs and similar, graphs, implementation	2100	x2441
870D	Something with XOR Queries brute force, interactive, probabilities	2000	x1333
865B	Ordering Pizza binary search, sortings, ternary search	1900	x1967
864E	Fire dp, sortings	2000	x4910
863E	Turn Off The TV data structures, sortings	2000	x4466
862E	Mahmoud and Ehab and the function binary search, data structures, sortings	2100	x2390
862D	Mahmoud and Ehab and the binary string binary search, divide and conquer, interactive	2000	x2104
862C	Mahmoud and Ehab and the xor constructive algorithms	1900	x4583
859E	Desk Disorder combinatorics, dfs and similar, dsu, graphs, trees	2100	x2187
859D	Third Month Insanity dp, probabilities, trees	2100	x1165
855C	Helga Hufflepuff's Cup dp, trees	2000	x2526
853C	Boredom data structures	2100	x1879
852E	Casinos and travel dp	2100	x1259
852D	Exploration plan binary search, flows, graph matchings, shortest paths	2100	x1330
852C	Property greedy, sortings	2100	x685
852B	Neural Network country dp, matrices	2000	x1827

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