Problemset - Codeforces

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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
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Problems

#	Name
900C	Remove Extra One brute force, data structures, math	1700	x4578
900B	Position in Fraction math, number theory	1300	x7866
899D	Shovel Sale constructive algorithms, math	1800	x2769
899C	Dividing the numbers constructive algorithms, graphs, math	1300	x8506
899A	Splitting in Teams constructive algorithms, greedy, math	800	x10265
898F	Restoring the Expression brute force, hashing, math	2300	x1198
898A	Rounding implementation, math	800	x16296
896D	Nephren Runs a Cinema chinese remainder theorem, combinatorics, math, number theory	2900	x537
895D	String Mark combinatorics, math, strings	2100	x1119
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5641
895B	XK Segments binary search, math, sortings, two pointers	1700	x3557
894C	Marco and GCD Sequence constructive algorithms, math	1900	x4380
894B	Ralph And His Magic Field combinatorics, constructive algorithms, math, number theory	1800	x4483
893E	Counting Arrays combinatorics, dp, math, number theory	2000	x3720
891E	Lust combinatorics, math, matrices	3000	x940
891A	Pride brute force, dp, greedy, math, number theory	1500	x10308
889E	Mod Mod Mod binary search, dp, math	3000	x567
888D	Almost Identity Permutations combinatorics, dp, math	1600	x8496
886E	Maximum Element combinatorics, dp, math	2400	x1029
884C	Bertown Subway dfs and similar, greedy, math	1500	x4748
883M	Quadcopter Competition greedy, math	1100	x3604
883D	Packmen Strike Back binary search, dp, math	2500	x442
876B	Divisiblity of Differences implementation, math, number theory	1300	x9222
876A	Trip For Meal math	900	x9404
875A	Classroom Watch brute force, math	1200	x9650
870C	Maximum splitting dp, greedy, math, number theory	1300	x9232
869C	The Intriguing Obsession combinatorics, dp, math	1800	x4730
869B	The Eternal Immortality math	1100	x13768
868G	El Toll Caves math	3300	x133
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x136
865F	Egg Roulette bitmasks, brute force, divide and conquer, math, meet-in-the-middle	3300	x68
864D	Make a Permutation! greedy, implementation, math	1500	x6013
864C	Bus greedy, implementation, math	1500	x5866
859G	Circle of Numbers math	3000	x159
859B	Lazy Security Guard brute force, geometry, math	1000	x7066
858A	k-rounding brute force, math, number theory	1100	x8094
856C	Eleventh Birthday combinatorics, dp, math	2400	x629
854B	Maxim Buys an Apartment constructive algorithms, math	1200	x8200
854A	Fraction brute force, constructive algorithms, math	800	x13678
852F	Product transformation combinatorics, math, number theory	2200	x578
852A	Digits brute force, implementation, math	2500	x389
851B	Arpa and an exam about geometry geometry, math	1400	x5562
851A	Arpa and a research in Mexican wave implementation, math	800	x9792
850F	Rainbow Balls math	2800	x669
850E	Random Elections bitmasks, brute force, divide and conquer, fft, math	2800	x403
850D	Tournament Construction constructive algorithms, dp, graphs, greedy, math	2800	x393
850A	Five Dimensional Points brute force, geometry, math	1700	x3213
848E	Days of Floral Colours combinatorics, divide and conquer, dp, fft, math	3400	x212
847M	Weather Tomorrow implementation, math	1000	x6309
847I	Noise Level dfs and similar, implementation, math	1900	x1534
846F	Random Query data structures, math, probabilities, two pointers	1800	x2283
845G	Shortest Path Problem? dfs and similar, graphs, math	2300	x1692
844B	Rectangles combinatorics, math	1300	x7487
843C	Upgrading Tree constructive algorithms, dfs and similar, graphs, math, trees	2600	x361
843A	Sorting by Subsequences dfs and similar, dsu, implementation, math, sortings	1400	x5682
842C	Ilya And The Tree dfs and similar, graphs, math, number theory, trees	2000	x3505
841B	Godsend games, math	1100	x12313
840A	Leha and Function combinatorics, greedy, math, number theory, sortings	1300	x7008
839E	Mother of Dragons brute force, graphs, math, meet-in-the-middle	2700	x919
839D	Winter is here combinatorics, dp, math, number theory	2200	x2984
838D	Airplane Arrangements math, number theory	2700	x916
837F	Prefix Sums binary search, brute force, combinatorics, math, matrices	2400	x983
837E	Vasya's Function binary search, implementation, math	2100	x1802
837D	Round Subset dp, math	2100	x5653
835A	Key races math	800	x20346
833C	Ever-Hungry Krakozyabra brute force, combinatorics, greedy, math	2700	x473
833A	The Meaningless Game math, number theory	1700	x6216
832C	Strange Radiation binary search, implementation, math	2500	x453
832A	Sasha and Sticks games, math	800	x20868
830E	Perpetual Motion Machine constructive algorithms, dp, graphs, implementation, math, trees	3100	x282
830C	Bamboo Partition brute force, data structures, implementation, math, number theory, sortings, two pointers	2300	x1206
827E	Rusty String fft, math, strings	2700	x968
822D	My pretty girl Noora brute force, dp, greedy, math, number theory	1800	x3106
822A	I'm bored with life implementation, math, number theory	800	x33424
821B	Okabe and Banana Trees brute force, math	1300	x5783
820B	Mister B and Angle in Polygon constructive algorithms, geometry, math	1300	x5269
819B	Mister B and PR Shifts data structures, implementation, math	1900	x1707
818F	Level Generation binary search, math, ternary search	2100	x1584
818A	Diplomas and Certificates implementation, math	800	x7027
817C	Really Big Numbers binary search, brute force, dp, math	1600	x7478
817B	Makes And The Product combinatorics, implementation, math, sortings	1500	x5789
817A	Treasure Hunt implementation, math, number theory	1200	x6270
815B	Karen and Test brute force, combinatorics, constructive algorithms, math	2200	x1382
813B	The Golden Age brute force, math	1800	x4002
810A	Straight <<A>> implementation, math	900	x8851
809E	Surprise me! divide and conquer, math, number theory, trees	3100	x736
809A	Do you want a date? implementation, math, sortings	1500	x4706
808B	Average Sleep Time data structures, implementation, math	1300	x7861
805A	Fake NP greedy, math	1000	x18095
804B	Minimum number of steps combinatorics, greedy, implementation, math	1400	x9691
804A	Find Amir constructive algorithms, greedy, math	1000	x15520
803C	Maximal GCD constructive algorithms, greedy, math	1900	x5143
802L	Send the Fool Further! (hard) dfs and similar, dp, math, trees	2400	x314
802F	Marmots (hard) math, probabilities	2800	x128
802E	Marmots (medium) math	2200	x254
802D	Marmots (easy) math	2100	x458
797A	k-Factorization implementation, math, number theory	1100	x15658
794G	Replace All combinatorics, dp, math	3400	x346
794E	Choosing Carrot games, math	2800	x813
794B	Cutting Carrot geometry, math	1200	x6642