Problemset - Codeforces

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Educational Codeforces Round 166 (Rated for Div. 2)
3 days
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Problems

#	Name
1118C	Palindromic Matrix constructive algorithms, implementation	1700	x5663
1115U3	Block unitary *special problem	1700	x196
1114C	Trailing Loves (or L'oeufs?) brute force, implementation, math, number theory	1700	x7260
1111C	Creative Snap binary search, brute force, divide and conquer, math	1700	x6118
1111B	Average Superhero Gang Power brute force, implementation, math	1700	x6189
1102E	Monotonic Renumeration combinatorics, sortings	1700	x5687
1093D	Beautiful Graph dfs and similar, graphs	1700	x8524
1092C	Prefixes and Suffixes strings	1700	x5798
1091D	New Year and the Permutation Concatenation combinatorics, dp, math	1700	x6610
1089E	Easy Chess constructive algorithms	1700	x1960
1085D	Minimum Diameter Tree constructive algorithms, implementation, trees	1700	x5308
1073D	Berland Fair binary search, brute force, data structures, greedy	1700	x6331
1068C	Colored Rooks constructive algorithms, graphs	1700	x3122
1066E	Binary Numbers AND Sum data structures, implementation, math	1700	x6023
1061C	Multiplicity data structures, dp, implementation, math, number theory	1700	x8413
1056C	Pick Heroes greedy, implementation, interactive, sortings	1700	x2323
1051D	Bicolorings bitmasks, dp	1700	x7163
1044A	The Tower is Going Home binary search, two pointers	1700	x2856
1043D	Mysterious Crime brute force, combinatorics, math, meet-in-the-middle, two pointers	1700	x4378
1042C	Array Product constructive algorithms, greedy, math	1700	x4633
1041D	Glider binary search, data structures, two pointers	1700	x5840
1037D	Valid BFS? dfs and similar, graphs, shortest paths, trees	1700	x13937
1032C	Playing Piano constructive algorithms, dp	1700	x3902
1027D	Mouse Hunt dfs and similar, graphs	1700	x7083
1023D	Array Restoration constructive algorithms, data structures	1700	x3949
1019A	Elections brute force, greedy	1700	x4570
1015E1	Stars Drawing (Easy Edition) brute force, dp, greedy	1700	x5485
1009D	Relatively Prime Graph brute force, constructive algorithms, graphs, greedy, math	1700	x6163
1009C	Annoying Present greedy, math	1700	x5199
1006D	Two Strings Swaps implementation	1700	x5862
1002C1	Distinguish zero state and plus state with minimum error	1700	x298
1002B4	Distinguish four 2-qubit states - 2	1700	x305
1001I	Deutsch-Jozsa algorithm *special problem	1700	x397
1000C	Covered Points Count data structures, implementation, sortings	1700	x6462
990D	Graph And Its Complement constructive algorithms, graphs, implementation	1700	x3760
983A	Finite or not? implementation, math	1700	x4457
980C	Posterized games, greedy	1700	x3727
978G	Petya's Exams greedy, implementation, sortings	1700	x4217
977F	Consecutive Subsequence dp	1700	x17125
960C	Subsequence Counting bitmasks, constructive algorithms, greedy, implementation	1700	x3880
954C	Matrix Walk implementation	1700	x3739
949B	A Leapfrog in the Array constructive algorithms, math	1700	x3641
938C	Constructing Tests binary search, brute force, constructive algorithms	1700	x3284
936A	Save Energy! binary search, implementation, math	1700	x4323
931C	Laboratory Work implementation, math	1700	x3297
929C	Красивая команда *special problem, combinatorics, math	1700	x1143
926I	A Vital Problem	1700	x650
926C	Is This a Zebra? implementation	1700	x1860
925B	Resource Distribution binary search, implementation, sortings	1700	x2178
924C	Riverside Curio data structures, dp, greedy	1700	x3687
923A	Primal Sport math, number theory	1700	x4977
919D	Substring dfs and similar, dp, graphs	1700	x9406
917B	MADMAX dfs and similar, dp, games, graphs	1700	x3494
915C	Permute Digits dp, greedy	1700	x6910
910C	Minimum Sum constructive algorithms, greedy, math	1700	x1745
900C	Remove Extra One brute force, data structures, math	1700	x4479
896A	Nephren gives a riddle binary search, dfs and similar	1700	x3342
895B	XK Segments binary search, math, sortings, two pointers	1700	x3429
852G	Bathroom terminal implementation	1700	x1268
850A	Five Dimensional Points brute force, geometry, math	1700	x2998
833A	The Meaningless Game math, number theory	1700	x6031
831C	Jury Marks brute force, constructive algorithms	1700	x4390
827A	String Reconstruction data structures, greedy, sortings, strings	1700	x3945
818D	Multicolored Cars data structures, implementation	1700	x3399
815A	Karen and Game brute force, greedy, implementation	1700	x5579
813C	The Tag Game dfs and similar, graphs	1700	x5691
798C	Mike and gcd problem dp, greedy, number theory	1700	x5642
797C	Minimal string data structures, greedy, strings	1700	x6303
789B	Masha and geometric depression brute force, implementation, math	1700	x4349
784A	Numbers Joke *special problem	1700	x3128
778A	String Game binary search, greedy, strings	1700	x11150
773A	Success Rate binary search, math	1700	x4377
769D	k-Interesting Pairs Of Integers *special problem, bitmasks, brute force, meet-in-the-middle	1700	x2215
769C	Cycle In Maze *special problem, dfs and similar, graphs, greedy, shortest paths	1700	x2124
766C	Mahmoud and a Message brute force, dp, greedy, strings	1700	x4325
765D	Artsem and Saunders constructive algorithms, dsu, math	1700	x2445
761D	Dasha and Very Difficult Problem binary search, brute force, constructive algorithms, greedy, sortings	1700	x3945
758C	Unfair Poll binary search, constructive algorithms, implementation, math	1700	x3823
756A	Pavel and barbecue constructive algorithms, dfs and similar	1700	x2964
747E	Comments dfs and similar, expression parsing, implementation, strings	1700	x1940
739A	Alyona and mex constructive algorithms, greedy	1700	x7627
734D	Anton and Chess implementation	1700	x3696
732D	Exams binary search, greedy, sortings	1700	x5411
729D	Sea Battle constructive algorithms, greedy, math	1700	x3631
729C	Road to Cinema binary search, greedy, sortings	1700	x3851
718A	Efim and Strange Grade dp, implementation, math	1700	x4326
711C	Coloring Trees dp	1700	x7843
698B	Fix a Tree constructive algorithms, dfs and similar, dsu, graphs, trees	1700	x5622
696B	Puzzles dfs and similar, math, probabilities, trees	1700	x3394
691D	Swaps in Permutation dfs and similar, dsu, math	1700	x5314
690B1	Recover Polygon (easy)	1700	x927
689C	Mike and Chocolate Thieves binary search, combinatorics, math	1700	x4927
685A	Robbers' watch brute force, combinatorics, dp, math	1700	x4148
678D	Iterated Linear Function math, number theory	1700	x4299
670E	Correct Bracket Sequence Editor data structures, dsu, strings	1700	x3157
656B	Scrambled *special problem, implementation	1700	x1634
644B	Processing Queries *special problem, constructive algorithms, data structures, two pointers	1700	x2612
632C	The Smallest String Concatenation sortings, strings	1700	x7284
631C	Report data structures, sortings	1700	x3744
630Q	Pyramids geometry, math	1700	x1214