Problemset - Codeforces

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Educational Codeforces Round 174 (Rated for Div. 2)
38:06:22
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brute force

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Problems

#	Name
768C	Jon Snow and his Favourite Number brute force, dp, implementation, sortings	1800	x3835
767B	The Queue brute force, greedy	2100	x2155
766C	Mahmoud and a Message brute force, dp, greedy, strings	1700	x4572
765G	Math, math everywhere brute force, dp, math, meet-in-the-middle, number theory	3200	x88
764A	Taymyr is calling you brute force, implementation, math	800	x16493
763C	Timofey and remoduling brute force, implementation, math, number theory	2600	x721
761F	Dasha and Photos brute force, data structures, dp, implementation	2600	x421
761D	Dasha and Very Difficult Problem binary search, brute force, constructive algorithms, greedy, sortings	1700	x4085
761C	Dasha and Password brute force, dp, implementation	1500	x5915
761B	Dasha and friends brute force, implementation, math	1300	x6918
761A	Dasha and Stairs brute force, constructive algorithms, implementation, math	1000	x14640
758F	Geometrical Progression brute force, math, number theory	2400	x651
758B	Blown Garland brute force, implementation, number theory	1100	x10285
757E	Bash Plays with Functions brute force, combinatorics, dp, number theory	2500	x1389
756D	Bacterial Melee brute force, combinatorics, dp, string suffix structures	2400	x1015
755A	PolandBall and Hypothesis brute force, graphs, math, number theory	800	x18470
754E	Dasha and cyclic table bitmasks, brute force, fft, strings, trees	2600	x509
754C	Vladik and chat brute force, constructive algorithms, dp, implementation, strings	2200	x958
754B	Ilya and tic-tac-toe game brute force, implementation	1100	x7310
753C	Interactive Bulls and Cows (Hard) brute force, constructive algorithms, interactive	2500	x315
753B	Interactive Bulls and Cows (Easy) brute force, constructive algorithms, implementation	1600	x1256
750G	New Year and Binary Tree Paths bitmasks, brute force, combinatorics, dp	3200	x468
750D	New Year and Fireworks brute force, data structures, dfs and similar, dp, implementation	1900	x3102
750A	New Year and Hurry binary search, brute force, implementation, math	800	x79588
749B	Parallelogram is Back brute force, constructive algorithms, geometry	1200	x8541
747F	Igor and Interesting Numbers brute force, combinatorics, dp, math	2500	x431
747A	Display Size brute force, math	800	x10404
744C	Hongcow Buys a Deck of Cards bitmasks, brute force, dp	2400	x1185
743E	Vladik and cards binary search, bitmasks, brute force, dp	2200	x1526
743C	Vladik and fractions brute force, constructive algorithms, math, number theory	1500	x12536
742B	Arpa’s obvious problem and Mehrdad’s terrible solution brute force, math, number theory	1500	x9444
740A	Alyona and copybooks brute force, implementation	1300	x8940
739E	Gosha is hunting brute force, data structures, dp, flows, math, probabilities, sortings	3000	x2254
734B	Anton and Digits brute force, greedy, implementation, math	800	x29866
732A	Buy a Shovel brute force, constructive algorithms, implementation, math	800	x75973
731F	Video Cards brute force, data structures, implementation, math, number theory	1900	x2913
731D	80-th Level Archeology brute force, data structures, greedy, sortings	2200	x1192
727A	Transformation: from A to B brute force, dfs and similar, math	1000	x14568
725E	Too Much Money brute force, greedy	2600	x661
725C	Hidden Word brute force, constructive algorithms, implementation, strings	1600	x2706
724B	Batch Sort brute force, greedy, implementation, math	1500	x4027
722A	Broken Clock brute force, implementation	1300	x6672
711A	Bus to Udayland brute force, implementation	800	x29886
710F	String Set Queries brute force, data structures, hashing, interactive, string suffix structures, strings	2400	x2001
710B	Optimal Point on a Line brute force, sortings	1400	x8874
706A	Beru-taxi brute force, geometry, implementation	900	x14671
704A	Thor brute force, data structures, implementation	1600	x9521
702B	Powers of Two brute force, data structures, implementation, math	1500	x12233
698D	Limak and Shooting Points brute force, geometry, math	2600	x554
697B	Barnicle brute force, implementation, math, strings	1400	x5814
696A	Lorenzo Von Matterhorn brute force, data structures, implementation, trees	1500	x6179
691F	Couple Cover brute force, dp, number theory	2200	x1320
689A	Mike and Cellphone brute force, constructive algorithms, implementation	1400	x5300
687D	Dividing Kingdom II brute force, data structures, dsu, graphs, sortings	2500	x983
685E	Travelling Through the Snow Queen's Kingdom bitmasks, brute force, divide and conquer, graphs	2800	x564
685D	Kay and Eternity brute force, implementation, sortings	2600	x492
685A	Robbers' watch brute force, combinatorics, dp, math	1700	x4299
681B	Economy Game brute force	1300	x9062
679D	Bear and Chase brute force, dfs and similar, graphs, implementation, math, probabilities	2900	x320
677E	Vanya and Balloons binary search, brute force, dp, implementation	2300	x609
675B	Restoring Painting brute force, constructive algorithms, math	1400	x7457
670F	Restore a Number brute force, constructive algorithms, strings	2300	x864
670D1	Magic Powder - 1 binary search, brute force, implementation	1400	x19208
670A	Holidays brute force, constructive algorithms, greedy, math	900	x17298
666D	Chain Reaction brute force, geometry	3000	x289
665B	Shopping brute force	1400	x3600
662E	To Hack or not to Hack brute force, dp, greedy	3100	x143
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x2097
653C	Bear and Up-Down brute force, implementation	1900	x1661
653B	Bear and Compressing brute force, dfs and similar, dp, strings	1300	x5052
653A	Bear and Three Balls brute force, implementation, sortings	900	x8317
650B	Image Preview binary search, brute force, dp, two pointers	1900	x3380
645A	Amity Assessment brute force, constructive algorithms, implementation	1200	x3596
641C	Little Artem and Dance brute force, constructive algorithms, implementation	1800	x3090
638D	Three-dimensional Turtle Super Computer brute force, dfs and similar, graphs	1800	x729
637C	Promocodes with Mistakes *special problem, brute force, constructive algorithms, implementation	1400	x2443
635A	Orchestra brute force, implementation	1100	x2943
633D	Fibonacci-ish brute force, dp, hashing, implementation, math	2000	x2842
633B	A Trivial Problem brute force, constructive algorithms, math, number theory	1300	x6787
633A	Ebony and Ivory brute force, math, number theory	1100	x13142
632F	Magic Matrix brute force, divide and conquer, graphs, matrices, trees	2400	x1123
632D	Longest Subsequence brute force, math, number theory	2100	x3985
632B	Alice, Bob, Two Teams brute force, constructive algorithms	1400	x4064
631A	Interview brute force, implementation	900	x9392
629B	Far Relative’s Problem brute force	1100	x8094
629A	Far Relative’s Birthday Cake brute force, combinatorics, constructive algorithms, implementation	800	x13718
626D	Jerry's Protest brute force, combinatorics, dp, probabilities	1800	x2791
626C	Block Towers brute force, greedy, math, number theory	1600	x4385
626A	Robot Sequence brute force, implementation	1000	x6303
621D	Rat Kwesh and Cheese brute force, constructive algorithms, math	2400	x1005
614A	Link/Cut Tree brute force, implementation	1500	x7523
613B	Skills binary search, brute force, dp, greedy, sortings, two pointers	1900	x2256
612A	The Text Splitting brute force, implementation, strings	1300	x7375
611B	New Year and Old Property bitmasks, brute force, implementation	1300	x10312
602A	Two Bases brute force, implementation	1100	x8574
599D	Spongebob and Squares brute force, math	1900	x2603
598E	Chocolate Bar brute force, dp	2000	x5209
594C	Edo and Magnets brute force, greedy, implementation, two pointers	2300	x695
593A	2Char brute force, implementation	1200	x5841
585A	Gennady the Dentist brute force, implementation	1800	x4353