Problemset - Codeforces

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Codeforces Round 973 (Div. 2)
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Problems

#	Name
558C	Amr and Chemistry brute force, graphs, greedy, math, shortest paths	1900	x3978
557D	Vitaly and Cycle combinatorics, dfs and similar, graphs, math	2000	x2196
557C	Arthur and Table brute force, data structures, dp, greedy, math, sortings	1900	x4004
555B	Case of Fugitive data structures, greedy, sortings	2000	x3715
553B	Kyoya and Permutation binary search, combinatorics, constructive algorithms, greedy, implementation, math	1900	x2111
552E	Vanya and Brackets brute force, dp, expression parsing, greedy, implementation, strings	2100	x1619
552D	Vanya and Triangles brute force, combinatorics, data structures, geometry, math, sortings	1900	x4470
552C	Vanya and Scales brute force, dp, greedy, math, meet-in-the-middle, number theory	1900	x5468
551D	GukiZ and Binary Operations combinatorics, implementation, math, matrices, number theory	2100	x1957
550D	Regular Bridge constructive algorithms, graphs, implementation	1900	x3330
549H	Degenerate Matrix binary search, math	2100	x1984
549D	Haar Features greedy, implementation	1900	x2138
547B	Mike and Feet binary search, data structures, dp, dsu	1900	x8597
546E	Soldier and Traveling flows, graphs, math	2100	x3577
545E	Paths and Trees graphs, greedy, shortest paths	2000	x4607
543B	Destroying Roads constructive algorithms, graphs, shortest paths	2100	x4089
542F	Quest dp, greedy	2100	x924
542C	Idempotent functions constructive algorithms, graphs, math	2000	x1116
540E	Infinite Inversions binary search, data structures, implementation, sortings, trees	2100	x2105
540D	Bad Luck Island dp, probabilities	1900	x5435
540C	Ice Cave dfs and similar	2000	x7254
535D	Tavas and Malekas greedy, hashing, string suffix structures, strings	1900	x3941
535C	Tavas and Karafs binary search, greedy, math	1900	x3772
534D	Handshakes binary search, constructive algorithms, data structures, greedy	1900	x2396
533B	Work Group dfs and similar, dp, graphs, strings, trees	2000	x2373
530H	Points in triangle *special problem, geometry	2100	x123
530G	Levenshtein distance *special problem	2100	x158
530F	Jumping frogs *special problem	2100	x101
529B	Group Photo 2 (online mirror version) brute force, greedy, sortings	1900	x866
526C	Om Nom and Candies brute force, greedy, math	2000	x2478
525E	Anya and Cubes binary search, bitmasks, brute force, dp, math, meet-in-the-middle	2100	x3166
524D	Social Network greedy, two pointers	2100	x950
524C	The Art of Dealing with ATM binary search, sortings	1900	x2042
522D	Closest Equals *special problem, data structures	2000	x3148
522C	Chicken or Fish? greedy	2100	x717
520D	Cubes games, greedy, implementation	2100	x1545
519E	A and B and Lecture Rooms binary search, data structures, dfs and similar, dp, trees	2100	x6813
515D	Drazil and Tiles constructive algorithms, greedy	2000	x2835
514D	R2D2 and Droid Army binary search, data structures, two pointers	2000	x4338
514C	Watto and Mechanism binary search, data structures, hashing, string suffix structures, strings	2000	x6793
513C	Second price auction bitmasks, probabilities	2000	x1536
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x5399
509E	Pretty Song math, strings	2000	x1788
509C	Sums of Digits dp, greedy, implementation	2000	x2064
507E	Breaking Good dfs and similar, dp, graphs, shortest paths	2100	x2850
505C	Mr. Kitayuta, the Treasure Hunter dfs and similar, dp, two pointers	1900	x6335
501D	Misha and Permutations Summation data structures	2000	x2391
500D	New Year Santa Network combinatorics, dfs and similar, graphs, trees	1900	x3112
498C	Array and Operations flows, graph matchings, number theory	2100	x3399
496E	Distributing Parts greedy, sortings	2100	x1654
496D	Tennis Game binary search	1900	x3009
494B	Obsessive String dp, strings	2000	x2693
492E	Vanya and Field math	2000	x1620
491B	New York Hotel greedy, math	2100	x552
490E	Restoring Increasing Sequence binary search, brute force, greedy, implementation	2000	x1592
490D	Chocolate brute force, dfs and similar, math, meet-in-the-middle, number theory	1900	x2130
489F	Special Matrices combinatorics, dp	2100	x1664
488B	Candy Boxes brute force, constructive algorithms, math	1900	x2117
487B	Strip binary search, data structures, dp, two pointers	2000	x3500
486D	Valid Sets dfs and similar, dp, math, trees	2100	x3966
484B	Maximum Value binary search, math, sortings, two pointers	2100	x7014
479E	Riding in a Lift combinatorics, dp	1900	x5102
478D	Red-Green Towers dp	2000	x5892
476D	Dreamoon and Sets constructive algorithms, greedy, math	1900	x4637
475D	CGCDSSQ brute force, data structures, math	2000	x4817
475C	Kamal-ol-molk's Painting brute force, constructive algorithms, greedy	2100	x784
474F	Ant colony data structures, math, number theory	2100	x8513
474E	Pillars binary search, data structures, dp, sortings, trees	2000	x3298
474C	Captain Marmot brute force, geometry	2000	x3107
472D	Design Tutorial: Inverse the Problem dfs and similar, dsu, shortest paths, trees	1900	x5378
470E	Chessboard *special problem	1900	x197
470D	Caesar Cipher *special problem	1900	x152
470C	Eval *special problem	1900	x240
468B	Two Sets 2-sat, dfs and similar, dsu, graph matchings, greedy	2000	x4140
466E	Information Graph dfs and similar, dsu, graphs, trees	2100	x2215
466D	Increase Sequence combinatorics, dp	2100	x3169
466B	Wonder Room brute force, math	2000	x4895
464C	Substitutes in Number dp	2100	x1847
464B	Restore Cube brute force, geometry	2000	x1707
463E	Caisa and Tree brute force, dfs and similar, math, number theory, trees	2100	x1597
463D	Gargari and Permutations dfs and similar, dp, graphs, implementation	1900	x6367
463C	Gargari and Bishops greedy, hashing, implementation	1900	x8717
461B	Appleman and Tree dfs and similar, dp, trees	2000	x5594
459E	Pashmak and Graph dp, sortings	1900	x5390
459C	Pashmak and Buses combinatorics, constructive algorithms, math	1900	x6170
457C	Elections brute force	2100	x876
457B	Distributed Join greedy	1900	x1129
455C	Civilization dfs and similar, dp, dsu, ternary search, trees	2100	x5707
455B	A Lot of Games dfs and similar, dp, games, implementation, strings, trees	1900	x5929
453B	Little Pony and Harmony Chest bitmasks, brute force, dp	2000	x4667
452D	Washer, Dryer, Folder greedy, implementation	1900	x1500
452C	Magic Trick combinatorics, math, probabilities	2100	x1619
451D	Count Good Substrings math	2000	x4721
449B	Jzzhu and Cities graphs, greedy, shortest paths	2000	x8457
448C	Painting Fence divide and conquer, dp, greedy	1900	x8152
446B	DZY Loves Modification brute force, data structures, greedy	2000	x3573
441D	Valera and Swaps constructive algorithms, dsu, graphs, implementation, math, string suffix structures	2100	x1103
439E	Devu and Birthday Celebration combinatorics, dp, math	2100	x1563
437D	The Child and Zoo dsu, sortings	1900	x3369
435D	Special Grid brute force, dp, greedy	2000	x756