Problemset - Codeforces

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Codeforces Round 973 (Div. 2)
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Problems

#	Name
748D	Santa Claus and a Palindrome constructive algorithms, data structures, greedy	2100	x1857
746G	New Roads constructive algorithms, graphs, trees	2100	x1509
746E	Numbers Exchange greedy, implementation, math	1900	x1734
744B	Hongcow's Game bitmasks, divide and conquer, interactive	1900	x1750
739B	Alyona and a tree binary search, data structures, dfs and similar, graphs, trees	1900	x4577
734E	Anton and Tree dfs and similar, dp, trees	2100	x4146
732E	Sockets greedy, sortings	2100	x1604
731F	Video Cards brute force, data structures, implementation, math, number theory	1900	x2822
730J	Bottles dp	1900	x3357
730I	Olympiad in Programming and Sports dp, flows, graphs, greedy	2000	x2031
730C	Bulmart binary search, dfs and similar	2100	x1226
729E	Subordinates constructive algorithms, data structures, graphs, greedy, sortings	1900	x2227
724D	Dense Subsequence data structures, greedy, strings	1900	x2327
722D	Generating Sets binary search, data structures, dfs and similar, greedy, strings, trees	1900	x3156
721D	Maxim and Array constructive algorithms, data structures, greedy, math	2000	x2344
720A	Closing ceremony greedy	2000	x858
717E	Paint it really, really dark gray dfs and similar	1900	x1445
717D	Dexterina’s Lab games, matrices, probabilities	1900	x1407
711D	Directed Roads combinatorics, dfs and similar, graphs, math	1900	x4444
710E	Generate a String dfs and similar, dp	2000	x5174
708B	Recover the String constructive algorithms, greedy, implementation, math	1900	x3237
703D	Mishka and Interesting sum data structures	2100	x3578
703C	Chris and Road geometry, implementation	2100	x1845
702E	Analysis of Pathes in Functional Graph data structures, graphs	2100	x2590
702D	Road to Post Office math	1900	x3352
700A	As Fast As Possible binary search, math	1900	x3180
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x2079
691E	Xor-sequences matrices	1900	x2509
690D3	The Wall (hard) dp	2100	x501
689E	Mike and Geometry Problem combinatorics, data structures, dp, geometry, implementation	2000	x1922
689D	Friends and Subsequences binary search, data structures	2100	x3408
687C	The Values You Can Make dp	1900	x5404
685B	Kay and Snowflake data structures, dfs and similar, dp, trees	1900	x4039
683H	Exchange of Books *special problem	1900	x95
683G	The Fraction *special problem	1900	x130
682D	Alyona and Strings dp, strings	1900	x3286
681D	Gifts by the List constructive algorithms, dfs and similar, graphs, trees	2000	x1761
676D	Theseus and labyrinth graphs, implementation, shortest paths	2000	x1858
675C	Money Transfers constructive algorithms, data structures, greedy, sortings	2100	x3641
671B	Robin Hood binary search, greedy	2000	x3015
666B	World Tour graphs, shortest paths	2000	x2159
665E	Beautiful Subarrays data structures, divide and conquer, strings, trees	2100	x3114
662D	International Olympiad constructive algorithms, greedy, implementation, math	2000	x1629
661F	Primes in Interval *special problem	1900	x313
661E	Divisibility Check *special problem	2000	x84
661D	Maximal Difference *special problem	2100	x132
661C	Array Sum *special problem	2000	x132
661B	Seasons *special problem	1900	x228
660D	Number of Parallelograms geometry	1900	x3968
659F	Polycarp and Hay dfs and similar, dsu, graphs, greedy, sortings	2000	x1781
656G	You're a Professional *special problem	1900	x483
656F	Ace It! *special problem	1900	x902
656E	Out of Controls *special problem	2000	x723
656D	Rosetta Problem *special problem	2100	x955
656C	Without Text *special problem	2000	x689
656A	Da Vinci Powers *special problem	1900	x3607
653C	Bear and Up-Down brute force, implementation	1900	x1640
650B	Image Preview binary search, brute force, dp, two pointers	1900	x3340
649E	Автобус binary search, data structures, greedy, sortings	2100	x108
648D	Собачки и миски data structures, greedy, sortings	1900	x232
644C	Hostname Aliases *special problem, binary search, data structures, implementation, sortings, strings	2100	x914
641E	Little Artem and Time Machine data structures	2000	x3214
633D	Fibonacci-ish brute force, dp, hashing, implementation, math	2000	x2784
633C	Spy Syndrome 2 data structures, dp, hashing, implementation, sortings, string suffix structures, strings	1900	x2749
632D	Longest Subsequence brute force, math, number theory	2100	x3749
631D	Messenger data structures, hashing, implementation, string suffix structures, strings	2100	x2070
630P	Area of a Star geometry	2100	x1119
630O	Arrow geometry	2000	x766
630E	A rectangle math	1900	x2320
629D	Babaei and Birthday Cake data structures, dp	2000	x3986
629C	Famil Door and Brackets dp, strings	2000	x2789
622D	Optimal Number Permutation constructive algorithms	1900	x2975
621E	Wet Shark and Blocks dp, matrices	2000	x2803
620E	New Year Tree bitmasks, data structures, trees	2100	x5554
615E	Hexagons binary search, implementation, math	2100	x974
615D	Multipliers math, number theory	2000	x3874
615C	Running Track dp, greedy, strings, trees	2000	x2302
613B	Skills binary search, brute force, dp, greedy, sortings, two pointers	1900	x2208
613A	Peter and Snow Blower binary search, geometry, ternary search	1900	x3213
611D	New Year and Ancient Prophecy dp, hashing, strings	2000	x2584
609E	Minimum spanning tree for each edge data structures, dfs and similar, dsu, graphs, trees	2100	x7699
609D	Gadgets for dollars and pounds binary search, greedy, two pointers	2000	x2704
607B	Zuma dp	1900	x11974
601B	Lipshitz Sequence data structures, math	2100	x2313
600D	Area of Two Circles' Intersection geometry	2000	x2261
599D	Spongebob and Squares brute force, math	1900	x2556
598E	Chocolate Bar brute force, dp	2000	x4925
597C	Subsequences data structures, dp	1900	x4895
590B	Chip 'n Dale Rescue Rangers binary search, geometry, math	2100	x1904
587B	Duff in Beach dp	2100	x1394
582B	Once Again... constructive algorithms, dp, matrices	1900	x3427
578C	Weakness and Poorness ternary search	2000	x4444
577B	Modulo Sum combinatorics, data structures, dp, two pointers	1900	x12075
576C	Points on Plane constructive algorithms, divide and conquer, geometry, greedy, sortings	2100	x3395
576B	Invariance of Tree constructive algorithms, dfs and similar, greedy, trees	2100	x1804
575F	Bulbo dp, greedy	2100	x1030
571B	Minimization dp, greedy, sortings	2000	x2614
571A	Lengthening Sticks combinatorics, implementation, math	2100	x2321
568B	Symmetric and Transitive combinatorics, dp, math	1900	x2240
566D	Restructuring Company data structures, dsu	1900	x3241