Problemset - Codeforces

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Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round)
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Problems

#	Name
98A	Help Victoria the Wise brute force, implementation	1700	x1213
96B	Lucky Numbers (easy) binary search, bitmasks, brute force	1300	x15425
95C	Volleyball shortest paths	1900	x2781
95B	Lucky Numbers dp, greedy	1800	x1218
95A	Hockey implementation, strings	1600	x1672
94B	Friends graphs, implementation, math	1300	x4664
93B	End of Exams greedy	1900	x918
93A	Frames implementation	1700	x1945
92B	Binary Number greedy	1300	x4818
91B	Queue binary search, data structures	1500	x6787
91A	Newspaper Headline greedy, strings	1500	x3589
89A	Robbery greedy	1800	x1476
88B	Keyboard implementation	1500	x4652
87B	Vasya and Types implementation, strings	1800	x1147
87A	Trains implementation, math	1500	x5358
86A	Reflection math	1600	x1381
85B	Embassy Queue data structures, greedy	1800	x975
85A	Domino constructive algorithms, implementation	1300	x1789
84C	Biathlon binary search, implementation	1700	x1703
83B	Doctor binary search, math, sortings	1800	x1692
83A	Magical Array math	1300	x6227
82B	Sets constructive algorithms, hashing, implementation	1700	x2034
81C	Average Score greedy, math, sortings	1700	x1663
81B	Sequence Formatting implementation, strings	1700	x1954
81A	Plug-in implementation	1400	x10721
79C	Beaver data structures, dp, greedy, hashing, strings, two pointers	1800	x1782
79B	Colorful Field implementation, sortings	1400	x7176
77B	Falling Anvils math, probabilities	1800	x2619
77A	Heroes brute force, implementation	1400	x1775
76E	Points implementation, math	1700	x1712
76D	Plus and xor dp, greedy, math	1700	x2066
75C	Modified GCD binary search, number theory	1600	x12655
75B	Facetook Priority Wall expression parsing, implementation, strings	1500	x3304
74B	Train dp, games, greedy	1500	x1542
73C	LionAge II dp	1800	x2115
73A	The Elder Trolls IV: Oblivon greedy, math	1600	x1341
72I	Goofy Numbers *special problem, implementation	1500	x463
72H	Reverse It! *special problem, implementation	1600	x265
72F	Oil *special problem, greedy, math	1900	x118
72E	Ali goes shopping *special problem, brute force, strings	1800	x153
72A	Goshtasp, Vishtasp and Eidi *special problem, greedy, math	1800	x185
71C	Round Table Knights dp, math, number theory	1600	x6480
71B	Progress Bar implementation, math	1300	x4517
70B	Text Messaging expression parsing, greedy, strings	1600	x1772
70A	Cookies math	1300	x3280
69E	Subsegments data structures, implementation	1800	x4345
69D	Dot dp, games	1900	x991
68B	Energy exchange binary search	1600	x4472
67D	Optical Experiment binary search, data structures, dp	1900	x1432
67B	Restoration of the Permutation greedy	1800	x771
67A	Partial Teacher dp, graphs, greedy, implementation	1800	x2111
66D	Petya and His Friends constructive algorithms, math, number theory	1700	x3163
66C	Petya and File System data structures, implementation	1800	x1031
66A	Petya and Java implementation, strings	1300	x6365
65B	Harry Potter and the History of Magic brute force, greedy, implementation	1700	x1365
65A	Harry Potter and Three Spells implementation, math	1800	x1819
64E	Prime Segment *special problem, brute force, math, number theory	1800	x240
64D	Presents *special problem, greedy	1800	x287
64C	Table *special problem, greedy, implementation, math	1600	x337
64B	Expression *special problem, expression parsing	1500	x1015
64A	Factorial *special problem, implementation	1300	x2802
63D	Dividing Island constructive algorithms	1900	x1263
63C	Bulls and Cows brute force, implementation	1700	x1720
62B	Tyndex.Brome binary search, implementation	1800	x1289
62A	A Student's Dream greedy, math	1300	x3446
61E	Enemy is weak data structures, trees	1900	x10961
61D	Eternal Victory dfs and similar, graphs, greedy, shortest paths, trees	1800	x6564
61B	Hard Work strings	1300	x3864
60B	Serial Time! dfs and similar, dsu	1400	x4594
60A	Where Are My Flakes? implementation, two pointers	1300	x3622
59C	Title expression parsing	1600	x2097
58C	Trees brute force	1800	x2030
58B	Coins greedy	1300	x12192
57C	Array combinatorics, math	1900	x2592
57B	Martian Architecture implementation	1600	x1016
57A	Square Earth? dfs and similar, greedy, implementation	1300	x2902
56C	Corporation Mail data structures, expression parsing, implementation	1700	x1156
56B	Spoilt Permutation implementation	1300	x3724
55C	Pie or die games	1900	x1639
55B	Smallest number brute force	1600	x2849
54B	Cutting Jigsaw Puzzle hashing, implementation	1800	x763
54A	Presents implementation	1300	x2068
53D	Physical Education sortings	1500	x2025
53B	Blog Photo binary search, implementation	1700	x1407
52B	Right Triangles combinatorics	1600	x2047
51C	Three Base Stations binary search, greedy	1800	x1955
51B	bHTML Tables Analisys expression parsing	1700	x872
51A	Cheaterius's Problem implementation	1300	x1824
50B	Choosing Symbol Pairs strings	1500	x5673
49D	Game brute force, dp, implementation	1800	x1904
49C	Disposition constructive algorithms, math	1700	x1689
49B	Sum math	1500	x2476
48D	Permutations greedy	1500	x2508
48C	The Race math	1800	x781
46E	Comb data structures, dp	1900	x956
46D	Parking Lot data structures, implementation	1800	x979
46C	Hamsters and Tigers two pointers	1600	x2435
45J	Planting Trees constructive algorithms	1800	x941
45I	TCMCF+++ greedy	1400	x2394
45D	Event Dates greedy, meet-in-the-middle, sortings	1900	x1685