Problemset - Codeforces

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Codeforces Round 946 (Div. 3)
18:26:58
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Problems

#	Name
908E	New Year and Entity Enumeration bitmasks, combinatorics, dp, math	2500	x734
908D	New Year and Arbitrary Arrangement dp, math, probabilities	2200	x2250
908C	New Year and Curling brute force, geometry, implementation, math	1500	x6671
906D	Power Tower chinese remainder theorem, math, number theory	2700	x1977
906B	Seating of Students brute force, constructive algorithms, math	2200	x1123
903D	Almost Difference data structures, math	2200	x3698
901E	Cyclic Cipher fft, math	3300	x84
901B	GCD of Polynomials constructive algorithms, math	2200	x1374
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x3001
900C	Remove Extra One brute force, data structures, math	1700	x4426
900B	Position in Fraction math, number theory	1300	x7637
899D	Shovel Sale constructive algorithms, math	1800	x2690
899C	Dividing the numbers constructive algorithms, graphs, math	1300	x8283
899A	Splitting in Teams constructive algorithms, greedy, math	800	x10088
898F	Restoring the Expression brute force, hashing, math	2300	x1123
898A	Rounding implementation, math	800	x15614
896D	Nephren Runs a Cinema chinese remainder theorem, combinatorics, math, number theory	2900	x517
895D	String Mark combinatorics, math, strings	2100	x1086
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5135
895B	XK Segments binary search, math, sortings, two pointers	1700	x3426
894C	Marco and GCD Sequence constructive algorithms, math	1900	x4290
894B	Ralph And His Magic Field combinatorics, constructive algorithms, math, number theory	1800	x4383
893E	Counting Arrays combinatorics, dp, math, number theory	2000	x3266
891E	Lust combinatorics, math, matrices	3000	x862
891A	Pride brute force, dp, greedy, math, number theory	1500	x9639
889E	Mod Mod Mod binary search, dp, math	3000	x515
888D	Almost Identity Permutations combinatorics, dp, math	1600	x7647
886E	Maximum Element combinatorics, dp, math	2400	x978
884C	Bertown Subway dfs and similar, greedy, math	1500	x4617
883M	Quadcopter Competition greedy, math	1100	x3493
883D	Packmen Strike Back binary search, dp, math	2500	x349
876B	Divisiblity of Differences implementation, math, number theory	1300	x8755
876A	Trip For Meal math	900	x9245
875A	Classroom Watch brute force, math	1200	x9497
870C	Maximum splitting dp, greedy, math, number theory	1300	x8964
869C	The Intriguing Obsession combinatorics, dp, math	1800	x4363
869B	The Eternal Immortality math	1100	x12958
868G	El Toll Caves math	3300	x119
865G	Flowers and Chocolate combinatorics, math, matrices	3300	x133
865F	Egg Roulette bitmasks, brute force, divide and conquer, math, meet-in-the-middle	3300	x67
864D	Make a Permutation! greedy, implementation, math	1500	x5963
864C	Bus greedy, implementation, math	1500	x5831
859G	Circle of Numbers math	3000	x145
859B	Lazy Security Guard brute force, geometry, math	1000	x6753
858A	k-rounding brute force, math, number theory	1100	x7863
856C	Eleventh Birthday combinatorics, dp, math	2400	x526
854B	Maxim Buys an Apartment constructive algorithms, math	1200	x8129
854A	Fraction brute force, constructive algorithms, math	800	x13408
852F	Product transformation combinatorics, math, number theory	2200	x560
852A	Digits brute force, implementation, math	2500	x371
851B	Arpa and an exam about geometry geometry, math	1400	x5437
851A	Arpa and a research in Mexican wave implementation, math	800	x9509
850F	Rainbow Balls math	2800	x600
850E	Random Elections bitmasks, brute force, divide and conquer, fft, math	2800	x380
850D	Tournament Construction constructive algorithms, dp, graphs, greedy, math	2800	x371
850A	Five Dimensional Points brute force, geometry, math	1700	x2996
848E	Days of Floral Colours combinatorics, divide and conquer, dp, fft, math	3400	x201
847M	Weather Tomorrow implementation, math	1000	x6188
847I	Noise Level dfs and similar, implementation, math	1900	x1504
846F	Random Query data structures, math, probabilities, two pointers	1800	x2206
845G	Shortest Path Problem? dfs and similar, graphs, math	2300	x1502
844B	Rectangles combinatorics, math	1300	x7000
843C	Upgrading Tree constructive algorithms, dfs and similar, graphs, math, trees	2600	x346
843A	Sorting by Subsequences dfs and similar, dsu, implementation, math, sortings	1400	x5559
842C	Ilya And The Tree dfs and similar, graphs, math, number theory, trees	2000	x3418
841B	Godsend games, math	1100	x11981
840A	Leha and Function combinatorics, greedy, math, number theory, sortings	1300	x6956
839E	Mother of Dragons brute force, graphs, math, meet-in-the-middle	2700	x887
839D	Winter is here combinatorics, dp, math, number theory	2200	x2695
838D	Airplane Arrangements math, number theory	2700	x819
837F	Prefix Sums binary search, brute force, combinatorics, math, matrices	2400	x741
837E	Vasya's Function binary search, implementation, math	2100	x1512
837D	Round Subset dp, math	2100	x4846
835A	Key races math	800	x19950
833C	Ever-Hungry Krakozyabra brute force, combinatorics, greedy, math	2700	x460
833A	The Meaningless Game math, number theory	1700	x6028
832C	Strange Radiation binary search, implementation, math	2500	x427
832A	Sasha and Sticks games, math	800	x20386
830E	Perpetual Motion Machine constructive algorithms, dp, graphs, implementation, math, trees	3100	x272
830C	Bamboo Partition brute force, data structures, implementation, math, number theory, sortings, two pointers	2300	x1185
827E	Rusty String fft, math, strings	2700	x793
822D	My pretty girl Noora brute force, dp, greedy, math, number theory	1800	x2966
822A	I'm bored with life implementation, math, number theory	800	x31757
821B	Okabe and Banana Trees brute force, math	1300	x5644
820B	Mister B and Angle in Polygon constructive algorithms, geometry, math	1300	x5083
819B	Mister B and PR Shifts data structures, implementation, math	1900	x1622
818F	Level Generation binary search, math, ternary search	2100	x1293
818A	Diplomas and Certificates implementation, math	800	x6787
817C	Really Big Numbers binary search, brute force, dp, math	1600	x7065
817B	Makes And The Product combinatorics, implementation, math, sortings	1500	x5573
817A	Treasure Hunt implementation, math, number theory	1200	x6072
815B	Karen and Test brute force, combinatorics, constructive algorithms, math	2200	x1363
813B	The Golden Age brute force, math	1800	x3789
810A	Straight <<A>> implementation, math	900	x8720
809E	Surprise me! divide and conquer, math, number theory, trees	3100	x722
809A	Do you want a date? implementation, math, sortings	1500	x4662
808B	Average Sleep Time data structures, implementation, math	1300	x6686
805A	Fake NP greedy, math	1000	x17603
804B	Minimum number of steps combinatorics, greedy, implementation, math	1400	x9527
804A	Find Amir constructive algorithms, greedy, math	1000	x15227