Problemset - Codeforces

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Codeforces Round (Div. 2)
6 days

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Problems

#	Name
295C	Greg and Friends combinatorics, dp, graphs, shortest paths	2100	x1669
295B	Greg and Graph dp, graphs, shortest paths	1700	x13440
295A	Greg and Array data structures, implementation	1400	x16509
294E	Shaass the Great dp, trees	2300	x918
294D	Shaass and Painter Robot brute force, implementation, number theory	2500	x308
294C	Shaass and Lights combinatorics, number theory	1900	x3737
294B	Shaass and Bookshelf dp, greedy	1700	x4417
294A	Shaass and Oskols implementation, math	800	x22601
293E	Close Vertices data structures, divide and conquer, trees	2700	x1325
293D	Ksusha and Square geometry, math, probabilities, two pointers	2700	x236
293C	Cube Problem brute force, math, number theory	2400	x561
293B	Distinct Paths brute force, combinatorics	2700	x776
293A	Weird Game games, greedy	1500	x2832
292E	Copying Data data structures	1900	x3992
292D	Connected Components data structures, dfs and similar, dp, dsu	1900	x2354
292C	Beautiful IP Addresses brute force	2000	x989
292B	Network Topology graphs, implementation	1200	x7882
292A	SMSC implementation	1100	x2667
291E	Tree-String Problem *special problem, dfs and similar, hashing, strings	2000	x1284
291D	Parallel Programming *special problem, greedy	1600	x1468
291C	Network Mask *special problem, bitmasks, brute force, implementation	1600	x1668
291B	Command Line Arguments *special problem, implementation, strings	1300	x3018
291A	Spyke Talks *special problem, implementation, sortings	800	x6020
290F	Greedy Petya *special problem, dfs and similar, graphs, greedy	2800	x130
290E	HQ *special problem, constructive algorithms	2500	x198
290D	Orange *special problem, implementation	1400	x1788
290C	WTF? *special problem, graph matchings, implementation, trees	1700	x1526
290B	QR code *special problem, implementation	1500	x2414
290A	Mysterious strings *special problem, implementation	1400	x2967
289B	Polo the Penguin and Matrix brute force, dp, implementation, sortings, ternary search	1400	x16951
289A	Polo the Penguin and Segments brute force, implementation	1100	x8876
288E	Polo the Penguin and Lucky Numbers dp, implementation, math	2800	x287
288D	Polo the Penguin and Trees combinatorics, dfs and similar, trees	2400	x679
288C	Polo the Penguin and XOR operation implementation, math	1700	x2258
288B	Polo the Penguin and Houses combinatorics	1500	x2869
288A	Polo the Penguin and Strings greedy	1300	x6448
287B	Pipeline binary search, math	1700	x9180
287A	IQ Test brute force, implementation	1100	x19131
286E	Ladies' Shop constructive algorithms, fft, math	2800	x822
286D	Tourists data structures, sortings	2600	x373
286C	Main Sequence greedy, implementation	2100	x1333
286B	Shifting implementation	2200	x1107
286A	Lucky Permutation constructive algorithms, math	1400	x3133
285E	Positions in Permutations combinatorics, dp, math	2600	x962
285D	Permutation Sum bitmasks, combinatorics, dp, implementation, meet-in-the-middle	1900	x1512
285C	Building Permutation greedy, implementation, sortings	1200	x22732
285B	Find Marble implementation	1200	x14844
285A	Slightly Decreasing Permutations greedy, implementation	1100	x13189
284B	Cows and Poker Game brute force, implementation	1000	x6704
284A	Cows and Primitive Roots implementation, math, number theory	1400	x6452
283E	Cow Tennis Tournament combinatorics, data structures, math	2800	x726
283D	Cows and Cool Sequences dp, math, number theory	2400	x528
283C	Coin Troubles dp	2100	x1285
283B	Cow Program dfs and similar, dp, graphs	1700	x3621
283A	Cows and Sequence constructive algorithms, data structures, implementation	1600	x6513
282E	Sausage Maximization bitmasks, data structures, trees	2200	x3491
282D	Yet Another Number Game dp, games	2100	x1394
282C	XOR and OR constructive algorithms, implementation, math	1500	x9186
282B	Painting Eggs greedy, math	1500	x12689
282A	Bit++ implementation	800	x244134
281B	Nearest Fraction brute force, implementation, two pointers	1700	x2946
281A	Word Capitalization implementation, strings	800	x200782
280E	Sequence Transformation brute force, data structures, dp, implementation, math	3000	x202
280D	k-Maximum Subsequence Sum data structures, flows, graphs, implementation	2800	x1217
280C	Game on Tree implementation, math, probabilities, trees	2200	x3618
280B	Maximum Xor Secondary data structures, implementation, two pointers	1800	x4447
280A	Rectangle Puzzle geometry	2000	x1452
279E	Beautiful Decomposition dp, games, greedy, number theory	1900	x1418
279D	The Minimum Number of Variables bitmasks, dp	2200	x714
279C	Ladder dp, implementation, two pointers	1700	x8124
279B	Books binary search, brute force, implementation, two pointers	1400	x49497
279A	Point on Spiral brute force, geometry, implementation	1400	x5536
278B	New Problem brute force, strings	1500	x3427
278A	Circle Line implementation	800	x11517
277E	Binary Tree on Plane flows, trees	2400	x1248
277D	Google Code Jam dp, probabilities	2800	x331
277C	Game games, implementation	2400	x448
277B	Set of Points constructive algorithms, geometry	2300	x787
277A	Learning Languages dfs and similar, dsu	1400	x18319
276E	Little Girl and Problem on Trees data structures, graphs, trees	2100	x1569
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x13293
276C	Little Girl and Maximum Sum data structures, greedy, implementation, sortings	1500	x24837
276B	Little Girl and Game games, greedy	1300	x27704
276A	Lunch Rush implementation	900	x27013
275B	Convex Shape constructive algorithms, implementation	1700	x2795
275A	Lights Out implementation	900	x29124
274E	Mirror Room data structures, implementation	3000	x303
274D	Lovely Matrix dfs and similar, graphs, greedy, sortings	2200	x1014
274C	The Last Hole! brute force, geometry	2600	x348
274B	Zero Tree dfs and similar, dp, greedy, trees	1800	x4928
274A	k-Multiple Free Set binary search, greedy, sortings	1500	x9927
273E	Dima and Game dp, games	2600	x363
273D	Dima and Figure dp	2400	x388
272E	Dima and Horses combinatorics, constructive algorithms, graphs	2200	x1178
272D	Dima and Two Sequences combinatorics, math, sortings	1600	x2597
272C	Dima and Staircase data structures, implementation	1500	x6706
272B	Dima and Sequence implementation, math	1400	x3938
272A	Dima and Friends implementation, math	1000	x23894
271E	Three Horses constructive algorithms, math, number theory	2200	x480
271D	Good Substrings data structures, strings	1800	x10636