Problemset - Codeforces

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Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2)
02:15:25
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Problems

#	Name
470H	Array Sorting *special problem	2300	x188
470G	Hamming Distance *special problem	2300	x95
470F	Pairwise Sums *special problem	2300	x104
468C	Hack it! binary search, constructive algorithms, math	2500	x2314
468B	Two Sets 2-sat, dfs and similar, dsu, graph matchings, greedy	2000	x4039
467E	Alex and Complicated Task data structures, dp, greedy	2300	x770
467D	Fedor and Essay dfs and similar, dp, graphs, hashing, strings	2400	x1784
466E	Information Graph dfs and similar, dsu, graphs, trees	2100	x2125
466D	Increase Sequence combinatorics, dp	2100	x3092
466B	Wonder Room brute force, math	2000	x4838
464C	Substitutes in Number dp	2100	x1842
464B	Restore Cube brute force, geometry	2000	x1670
463E	Caisa and Tree brute force, dfs and similar, math, number theory, trees	2100	x1581
461C	Appleman and a Sheet of Paper data structures, implementation	2200	x1313
461B	Appleman and Tree dfs and similar, dp, trees	2000	x5444
460D	Little Victor and Set brute force, constructive algorithms, math	2300	x988
457C	Elections brute force	2100	x874
455C	Civilization dfs and similar, dp, dsu, ternary search, trees	2100	x5587
453C	Little Pony and Summer Sun Celebration constructive algorithms, dfs and similar, graphs	2200	x1585
453B	Little Pony and Harmony Chest bitmasks, brute force, dp	2000	x4605
452E	Three strings data structures, dsu, string suffix structures, strings	2400	x1050
452C	Magic Trick combinatorics, math, probabilities	2100	x1606
451E	Devu and Flowers bitmasks, combinatorics, number theory	2300	x3477
451D	Count Good Substrings math	2000	x4674
449D	Jzzhu and Numbers bitmasks, combinatorics, dp	2400	x4226
449C	Jzzhu and Apples constructive algorithms, number theory	2500	x2226
449B	Jzzhu and Cities graphs, greedy, shortest paths	2000	x8273
448E	Divisors brute force, dfs and similar, implementation, number theory	2200	x1470
446C	DZY Loves Fibonacci Numbers data structures, math, number theory	2400	x3234
446B	DZY Loves Modification brute force, data structures, greedy	2000	x3557
444D	DZY Loves Strings binary search, hashing, strings, two pointers	2500	x759
444C	DZY Loves Colors data structures	2400	x2848
444B	DZY Loves FFT probabilities	2300	x1056
442C	Artem and Array data structures, greedy	2500	x1710
441E	Valera and Number bitmasks, dp, math, probabilities	2400	x683
441D	Valera and Swaps constructive algorithms, dsu, graphs, implementation, math, string suffix structures	2100	x1073
440D	Berland Federalization dp, trees	2200	x646
439E	Devu and Birthday Celebration combinatorics, dp, math	2100	x1511
438D	The Child and Sequence data structures, math	2300	x8130
437E	The Child and Polygon dp, geometry	2500	x697
435E	Special Graph	2500	x236
435D	Special Grid brute force, dp, greedy	2000	x748
433E	Tachibana Kanade's Tofu dp	2500	x474
433D	Nanami's Digital Board dsu, implementation	2000	x1091
432E	Square Tiling constructive algorithms, greedy	2300	x683
432D	Prefixes and Suffixes dp, string suffix structures, strings, two pointers	2000	x8603
431E	Chemistry Experiment binary search, data structures, ternary search	2200	x916
431D	Random Task binary search, bitmasks, combinatorics, dp, math	2100	x2288
429D	Tricky Function data structures, divide and conquer, geometry	2200	x2693
429C	Guess the Tree bitmasks, constructive algorithms, dp, greedy, trees	2300	x933
427E	Police Patrol greedy, implementation, math, ternary search	2000	x1411
427D	Match & Catch dp, string suffix structures, strings	2200	x2129
425E	Sereja and Sets dp	2500	x597
425D	Sereja and Squares binary search, data structures, hashing	2300	x1416
425C	Sereja and Two Sequences data structures, dp	2300	x886
425B	Sereja and Table bitmasks, greedy	2200	x1284
424E	Colored Jenga dfs and similar, dp, probabilities	2500	x130
424D	Biathlon Track binary search, brute force, constructive algorithms, data structures, dp	2300	x558
420D	Cup Trick data structures	2200	x782
417E	Square Table constructive algorithms, math, probabilities	2400	x787
416E	President's Path dp, graphs, shortest paths	2500	x1399
416D	Population Size greedy, implementation, math	2400	x936
414D	Mashmokh and Water Tanks binary search, data structures, greedy, trees, two pointers	2300	x676
414C	Mashmokh and Reverse Operation combinatorics, divide and conquer	2100	x2185
413E	Maze 2D data structures, divide and conquer	2200	x678
413D	2048 bitmasks, dp	2000	x779
412D	Giving Awards dfs and similar	2000	x1827
409I	Feed the Golorp *special problem	2400	x118
409G	On a plane *special problem, geometry	2200	x507
407C	Curious Array brute force, combinatorics, implementation, math	2500	x962
406D	Hill Climbing dfs and similar, geometry, trees	2200	x1142
405E	Graph Cutting dfs and similar, graphs	2300	x1353
404E	Maze 1D binary search, greedy, implementation	2200	x571
403D	Beautiful Pairs of Numbers combinatorics, dp	2300	x1077
402E	Strictly Positive Matrix graphs, math	2200	x2141
401E	Olympic Games math	2500	x168
401D	Roman and Numbers bitmasks, brute force, combinatorics, dp, number theory	2000	x4067
400E	Inna and Binary Logic binary search, bitmasks, data structures	2100	x938
400D	Dima and Bacteria dsu, graphs, shortest paths	2000	x2835
388C	Fox and Card Game games, greedy, sortings	2000	x3242
387E	George and Cards binary search, data structures	2200	x867
387D	George and Interesting Graph graph matchings	2200	x971
386D	Game with Points dp, graphs, implementation, shortest paths	2100	x419
386C	Diverse Substrings dp, strings, two pointers	2000	x758
385E	Bear in the Field math, matrices	2300	x565
385D	Bear and Floodlight bitmasks, dp, geometry	2200	x802
383D	Antimatter dp	2300	x2942
383C	Propagating tree data structures, dfs and similar, trees	2000	x6256
383B	Volcanoes binary search, implementation, sortings, two pointers	2500	x660
382D	Ksenia and Pawns dfs and similar, graphs, implementation, trees	2200	x657
382B	Number Busters binary search, math	2000	x1396
380D	Sereja and Cinema combinatorics, math	2500	x459
380C	Sereja and Brackets data structures, schedules	2000	x14307
380B	Sereja and Tree graphs, implementation	2400	x531
379F	New Year Tree data structures, divide and conquer, trees	2400	x2194
379E	New Year Tree Decorations geometry, schedules, sortings	2500	x338
379D	New Year Letter bitmasks, brute force, dp	2000	x1527
377D	Developing Game data structures	2400	x1109
377C	Captains Mode bitmasks, dp, games	2200	x1113
375D	Tree and Queries data structures, dfs and similar, trees	2400	x6424