Problemset - Codeforces

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Codeforces Round 987 (Div. 2)
02:34:54
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Problems

#	Name
306C	White, Black and White Again combinatorics, number theory	2100	x486
306B	Optimizer data structures, greedy, sortings	2100	x444
305E	Playing with String games	2300	x630
305D	Olya and Graph combinatorics, math	2200	x512
305C	Ivan and Powers of Two greedy, implementation	1600	x2456
305B	Continued Fractions brute force, implementation, math	1700	x2150
305A	Strange Addition brute force, constructive algorithms, implementation	1600	x4801
303E	Random Ranking dp, math, probabilities	3000	x321
303D	Rotatable Number math, number theory	2600	x298
303C	Minimum Modular brute force, graphs, math, number theory	2400	x887
303B	Rectangle Puzzle II implementation, math	1700	x1347
301E	Yaroslav and Arrangements dp	2800	x366
301D	Yaroslav and Divisors data structures	2200	x2406
301C	Yaroslav and Algorithm constructive algorithms	2500	x475
301B	Yaroslav and Time binary search, graphs, shortest paths	2100	x2409
301A	Yaroslav and Sequence constructive algorithms	1800	x3088
300E	Empire Strikes Back binary search, math, number theory	2300	x1043
300D	Painting Square dp, fft	2300	x756
300C	Beautiful Numbers brute force, combinatorics	1800	x9626
300B	Coach brute force, dfs and similar, graphs	1500	x6369
297E	Mystic Carvings data structures	3000	x376
297D	Color the Carpet constructive algorithms	2500	x589
297C	Splitting the Uniqueness constructive algorithms	2400	x962
297B	Fish Weight constructive algorithms, greedy	1600	x3506
297A	Parity Game constructive algorithms	1700	x3626
296B	Yaroslav and Two Strings combinatorics, dp	2000	x2287
295E	Yaroslav and Points data structures	2500	x686
295D	Greg and Caves combinatorics, dp	2400	x657
295C	Greg and Friends combinatorics, dp, graphs, shortest paths	2100	x1734
295B	Greg and Graph dp, graphs, shortest paths	1700	x14278
295A	Greg and Array data structures, implementation	1400	x18226
294E	Shaass the Great dp, trees	2300	x950
294D	Shaass and Painter Robot brute force, implementation, number theory	2500	x363
294C	Shaass and Lights combinatorics, number theory	1900	x3834
294B	Shaass and Bookshelf dp, greedy	1700	x4566
293E	Close Vertices data structures, divide and conquer, trees	2700	x1446
293D	Ksusha and Square geometry, math, probabilities, two pointers	2700	x239
293C	Cube Problem brute force, math, number theory	2400	x575
293B	Distinct Paths brute force, combinatorics	2700	x870
293A	Weird Game games, greedy	1500	x2899
292E	Copying Data data structures	1900	x4171
292D	Connected Components data structures, dfs and similar, dp, dsu	1900	x2442
292C	Beautiful IP Addresses brute force	2000	x1172
291E	Tree-String Problem *special problem, dfs and similar, hashing, strings	2000	x1317
291D	Parallel Programming *special problem, greedy	1600	x1479
291C	Network Mask *special problem, bitmasks, brute force, implementation	1600	x1682
290F	Greedy Petya *special problem, dfs and similar, graphs, greedy	2800	x134
290E	HQ *special problem, constructive algorithms	2500	x205
290D	Orange *special problem, implementation	1400	x1804
290C	WTF? *special problem, graph matchings, implementation, trees	1700	x1550
290B	QR code *special problem, implementation	1500	x2446
290A	Mysterious strings *special problem, implementation	1400	x3004
289B	Polo the Penguin and Matrix brute force, dp, implementation, sortings, ternary search	1400	x17412
288E	Polo the Penguin and Lucky Numbers dp, implementation, math	2800	x298
288D	Polo the Penguin and Trees combinatorics, dfs and similar, trees	2400	x758
288C	Polo the Penguin and XOR operation implementation, math	1700	x2307
288B	Polo the Penguin and Houses combinatorics	1500	x2939
287B	Pipeline binary search, math	1700	x9874
286E	Ladies' Shop constructive algorithms, fft, math	2800	x833
286D	Tourists data structures, sortings	2600	x379
286C	Main Sequence greedy, implementation	2100	x1513
286B	Shifting implementation	2200	x1119
286A	Lucky Permutation constructive algorithms, math	1400	x3182
285E	Positions in Permutations combinatorics, dp, math	2600	x1000
285D	Permutation Sum bitmasks, combinatorics, dp, implementation, meet-in-the-middle	1900	x1555
284A	Cows and Primitive Roots implementation, math, number theory	1400	x6603
283E	Cow Tennis Tournament combinatorics, data structures, math	2800	x774
283D	Cows and Cool Sequences dp, math, number theory	2400	x535
283C	Coin Troubles dp	2100	x1448
283B	Cow Program dfs and similar, dp, graphs	1700	x3670
283A	Cows and Sequence constructive algorithms, data structures, implementation	1600	x6582
282E	Sausage Maximization bitmasks, data structures, trees	2200	x3633
282D	Yet Another Number Game dp, games	2100	x1445
282C	XOR and OR constructive algorithms, implementation, math	1500	x9439
282B	Painting Eggs greedy, math	1500	x13018
281B	Nearest Fraction brute force, implementation, two pointers	1700	x3036
280E	Sequence Transformation brute force, data structures, dp, implementation, math	3000	x207
280D	k-Maximum Subsequence Sum data structures, flows, graphs, implementation	2800	x1317
280C	Game on Tree implementation, math, probabilities, trees	2200	x4137
280B	Maximum Xor Secondary data structures, implementation, two pointers	1800	x4730
280A	Rectangle Puzzle geometry	2000	x1472
279E	Beautiful Decomposition dp, games, greedy, number theory	1900	x1449
279D	The Minimum Number of Variables bitmasks, dp	2200	x736
279C	Ladder dp, implementation, two pointers	1700	x8283
279B	Books binary search, brute force, implementation, two pointers	1400	x53819
279A	Point on Spiral brute force, geometry, implementation	1400	x5618
278B	New Problem brute force, strings	1500	x3461
277E	Binary Tree on Plane flows, trees	2400	x1293
277D	Google Code Jam dp, probabilities	2800	x336
277C	Game games, implementation	2400	x452
277B	Set of Points constructive algorithms, geometry	2300	x811
277A	Learning Languages dfs and similar, dsu	1400	x19020
276E	Little Girl and Problem on Trees data structures, graphs, trees	2100	x1614
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x13942
276C	Little Girl and Maximum Sum data structures, greedy, implementation, sortings	1500	x27124
275B	Convex Shape constructive algorithms, implementation	1700	x2827
274E	Mirror Room data structures, implementation	3000	x313
274D	Lovely Matrix dfs and similar, graphs, greedy, sortings	2200	x1042
274C	The Last Hole! brute force, geometry	2600	x350
274B	Zero Tree dfs and similar, dp, greedy, trees	1800	x5042