Problemset - Codeforces

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Codeforces Round 988 (Div. 3)
36:50:47
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Problems

#	Name
766C	Mahmoud and a Message brute force, dp, greedy, strings	1700	x4444
765G	Math, math everywhere brute force, dp, math, meet-in-the-middle, number theory	3200	x86
765F	Souvenirs data structures	3100	x2084
765E	Tree Folding dfs and similar, dp, greedy, implementation, trees	2200	x1284
765D	Artsem and Saunders constructive algorithms, dsu, math	1700	x2486
763E	Timofey and our friends animals data structures, divide and conquer, dsu	2900	x505
763D	Timofey and a flat tree data structures, graphs, hashing, shortest paths, trees	2900	x565
763C	Timofey and remoduling brute force, implementation, math, number theory	2600	x712
763B	Timofey and rectangles constructive algorithms, geometry	2100	x2825
763A	Timofey and a tree dfs and similar, dp, dsu, graphs, implementation, trees	1600	x10618
762F	Tree nesting combinatorics, graphs, trees	2800	x380
762E	Radio stations binary search, data structures	2200	x1411
762D	Maximum path dp, greedy, implementation	2300	x1581
762C	Two strings binary search, hashing, strings, two pointers	2100	x2581
762B	USB vs. PS/2 greedy, implementation, sortings, two pointers	1400	x8284
762A	k-th divisor math, number theory	1400	x20065
761F	Dasha and Photos brute force, data structures, dp, implementation	2600	x417
761E	Dasha and Puzzle constructive algorithms, dfs and similar, graphs, greedy, trees	2000	x2182
761D	Dasha and Very Difficult Problem binary search, brute force, constructive algorithms, greedy, sortings	1700	x4066
761C	Dasha and Password brute force, dp, implementation	1500	x5886
760B	Frodo and pillows binary search, greedy	1500	x6626
758F	Geometrical Progression brute force, math, number theory	2400	x637
758E	Broken Tree dfs and similar, dp, graphs, greedy, trees	2600	x497
758D	Ability To Convert constructive algorithms, dp, greedy, math, strings	2000	x2734
758C	Unfair Poll binary search, constructive algorithms, implementation, math	1700	x3885
757G	Can Bash Save the Day? data structures, divide and conquer, graphs, trees	3400	x506
757F	Team Rocket Rises Again data structures, graphs, shortest paths	2800	x1168
757E	Bash Plays with Functions brute force, combinatorics, dp, number theory	2500	x1337
757D	Felicity's Big Secret Revealed bitmasks, dp	2200	x1407
757C	Felicity is Coming! data structures, hashing, sortings, strings	1900	x2373
757B	Bash's Big Day greedy, math, number theory	1400	x10305
756F	Long number expression parsing, math, number theory	3400	x99
756E	Byteland coins combinatorics, dp, math	3200	x179
756D	Bacterial Melee brute force, combinatorics, dp, string suffix structures	2400	x1006
756C	Nikita and stack data structures	2200	x1352
756B	Travel Card binary search, dp	1600	x3594
756A	Pavel and barbecue constructive algorithms, dfs and similar	1700	x3072
755G	PolandBall and Many Other Balls combinatorics, divide and conquer, dp, fft, math, number theory	3200	x923
755F	PolandBall and Gifts bitmasks, dp, greedy	2600	x1439
755E	PolandBall and White-Red graph constructive algorithms, graphs, shortest paths	2400	x855
755D	PolandBall and Polygon data structures	2000	x2513
754E	Dasha and cyclic table bitmasks, brute force, fft, strings, trees	2600	x502
754D	Fedor and coupons binary search, data structures, greedy, sortings	2100	x2465
754C	Vladik and chat brute force, constructive algorithms, dp, implementation, strings	2200	x942
753C	Interactive Bulls and Cows (Hard) brute force, constructive algorithms, interactive	2500	x307
753B	Interactive Bulls and Cows (Easy) brute force, constructive algorithms, implementation	1600	x1210
750H	New Year and Snowy Grid dfs and similar, dsu, graphs, interactive	3500	x192
750G	New Year and Binary Tree Paths bitmasks, brute force, combinatorics, dp	3200	x451
750F	New Year and Finding Roots constructive algorithms, implementation, interactive, trees	2800	x488
750E	New Year and Old Subsequence data structures, divide and conquer, dp, matrices	2600	x1600
750D	New Year and Fireworks brute force, data structures, dfs and similar, dp, implementation	1900	x3084
750C	New Year and Rating binary search, greedy, math	1600	x6566
749E	Inversions After Shuffle data structures, probabilities	2400	x1092
749D	Leaving Auction binary search, data structures	2000	x2572
749C	Voting greedy, implementation, two pointers	1500	x5990
748F	Santa Clauses and a Soccer Championship constructive algorithms, dfs and similar, graphs, trees	2300	x655
748E	Santa Claus and Tangerines binary search, data structures, greedy, two pointers	2100	x1504
748D	Santa Claus and a Palindrome constructive algorithms, data structures, greedy	2100	x1876
748C	Santa Claus and Robot constructive algorithms, math	1400	x4629
748B	Santa Claus and Keyboard Check implementation, strings	1500	x5374
747F	Igor and Interesting Numbers brute force, combinatorics, dp, math	2500	x422
747E	Comments dfs and similar, expression parsing, implementation, strings	1700	x1972
747D	Winter Is Coming dp, greedy, sortings	1800	x3267
746G	New Roads constructive algorithms, graphs, trees	2100	x1531
746F	Music in Car data structures, greedy, two pointers	2200	x776
746E	Numbers Exchange greedy, implementation, math	1900	x1741
746D	Green and Black Tea constructive algorithms, greedy, math	1500	x5118
746C	Tram constructive algorithms, implementation, math	1600	x3732
745B	Hongcow Solves A Puzzle implementation	1400	x3746
744E	Hongcow Masters the Cyclic Shift strings, two pointers	3200	x143
744D	Hongcow Draws a Circle geometry	3200	x125
744C	Hongcow Buys a Deck of Cards bitmasks, brute force, dp	2400	x1163
744B	Hongcow's Game bitmasks, divide and conquer, interactive	1900	x1781
744A	Hongcow Builds A Nation dfs and similar, graphs	1500	x8444
743E	Vladik and cards binary search, bitmasks, brute force, dp	2200	x1506
743D	Chloe and pleasant prizes dfs and similar, dp, graphs, trees	1800	x4373
743C	Vladik and fractions brute force, constructive algorithms, math, number theory	1500	x12362
742B	Arpa’s obvious problem and Mehrdad’s terrible solution brute force, math, number theory	1500	x9308
741E	Arpa’s abnormal DNA and Mehrdad’s deep interest data structures, string suffix structures	3400	x180
741D	Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths data structures, dfs and similar, trees	2900	x2806
741C	Arpa’s overnight party and Mehrdad’s silent entering constructive algorithms, dfs and similar, graphs	2600	x2636
741B	Arpa's weak amphitheater and Mehrdad's valuable Hoses dfs and similar, dp, dsu	1600	x5276
741A	Arpa's loud Owf and Mehrdad's evil plan dfs and similar, math	1600	x5437
739E	Gosha is hunting brute force, data structures, dp, flows, math, probabilities, sortings	3000	x2199
739D	Recover a functional graph graph matchings	3400	x186
739C	Alyona and towers data structures	2500	x1524
739B	Alyona and a tree binary search, data structures, dfs and similar, graphs, trees	1900	x4632
739A	Alyona and mex constructive algorithms, greedy	1700	x7883
737F	Dirty plates constructive algorithms, math	3300	x70
737E	Tanya is 5! graph matchings, graphs, greedy, schedules	3300	x122
736E	Chess Championship constructive algorithms, flows, greedy, math	2900	x187
736D	Permutations math, matrices	2800	x464
735E	Ostap and Tree dp, trees	2500	x875
735D	Taxes math, number theory	1600	x13594
735C	Tennis Championship combinatorics, constructive algorithms, greedy, math	1600	x7535
734F	Anton and School bitmasks, constructive algorithms, implementation, math	2500	x1301
734E	Anton and Tree dfs and similar, dp, trees	2100	x4232
734D	Anton and Chess implementation	1700	x3741
734C	Anton and Making Potions binary search, dp, greedy, two pointers	1600	x5345
733F	Drivers Dissatisfaction data structures, dsu, graphs, trees	2200	x1127