Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
2 days
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Codeforces Round 941 (Div. 2)
2 days
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Problems

#	Name
1144E	Median String bitmasks, math, number theory, strings	1900	x3975
1729F	Kirei and the Linear Function hashing, math	1900	x3972
724B	Batch Sort brute force, greedy, implementation, math	1500	x3967
1250H	Happy Birthday math	1500	x3963
1621D	The Winter Hike constructive algorithms, greedy, math	2100	x3955
150B	Quantity of Strings combinatorics, dfs and similar, graphs, math	1600	x3946
627A	XOR Equation dp, math	1700	x3945
1872G	Replace With Product brute force, greedy, math	2000	x3942
557C	Arthur and Table brute force, data structures, dp, greedy, math, sortings	1900	x3937
1909D	Split Plus K greedy, math, number theory	1900	x3934
1812E	Not a Geometry Problem special problem, special problem, constructive algorithms, geometry, math		x3932
1138B	Circus brute force, greedy, math, strings	1800	x3924
558C	Amr and Chemistry brute force, graphs, greedy, math, shortest paths	1900	x3914
272B	Dima and Sequence implementation, math	1400	x3911
1333F	Kate and imperfection greedy, implementation, math, number theory, sortings, two pointers	2200	x3906
226A	Flying Saucer Segments math	1400	x3899
1322B	Present binary search, bitmasks, constructive algorithms, data structures, math, sortings	2100	x3889
1622D	Shuffle combinatorics, math, two pointers	2000	x3868
189B	Counting Rhombi brute force, math	1300	x3867
449A	Jzzhu and Chocolate greedy, math	1700	x3865
1474D	Cleaning data structures, dp, greedy, math	2200	x3864
1062D	Fun with Integers dfs and similar, graphs, implementation, math	1800	x3861
1659D	Reverse Sort Sum constructive algorithms, data structures, greedy, implementation, math, two pointers	1900	x3859
486D	Valid Sets dfs and similar, dp, math, trees	2100	x3850
40A	Find Color constructive algorithms, geometry, implementation, math	1300	x3838
1363D	Guess The Maximums binary search, implementation, interactive, math	2100	x3822
758C	Unfair Poll binary search, constructive algorithms, implementation, math	1700	x3817
1696E	Placing Jinas combinatorics, math	2000	x3815
1110E	Magic Stones constructive algorithms, math, sortings	2200	x3800
1626D	Martial Arts Tournament binary search, brute force, greedy, math	2100	x3780
615D	Multipliers math, number theory	2000	x3780
813B	The Golden Age brute force, math	1800	x3771
1280B	Beingawesomeism implementation, math	1800	x3749
638A	Home Numbers *special problem, constructive algorithms, math	1100	x3748
39D	Cubical Planet math	1100	x3730
1578E	Easy Scheduling implementation, math	1200	x3724
1788D	Moving Dots binary search, brute force, combinatorics, math, two pointers	2000	x3705
535C	Tavas and Karafs binary search, greedy, math	1900	x3702
1029D	Concatenated Multiples implementation, math	1900	x3698
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x3690
903D	Almost Difference data structures, math	2200	x3690
1220D	Alex and Julian bitmasks, math, number theory	1900	x3684
1891D	Suspicious logarithms binary search, brute force, math	1900	x3683
1878F	Vasilije Loves Number Theory brute force, math, number theory	1900	x3683
746C	Tram constructive algorithms, implementation, math	1600	x3681
1665D	GCD Guess bitmasks, chinese remainder theorem, constructive algorithms, games, interactive, math, number theory	2000	x3676
1759F	All Possible Digits binary search, data structures, greedy, math, number theory	1800	x3674
1107D	Compression dp, implementation, math, number theory	1800	x3669
926A	2-3-numbers implementation, math	1300	x3669
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x3660
949B	A Leapfrog in the Array constructive algorithms, math	1700	x3638
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3634
20B	Equation math	2000	x3632
372C	Watching Fireworks is Fun data structures, dp, math	2100	x3619
1585D	Yet Another Sorting Problem data structures, math	1900	x3618
729D	Sea Battle constructive algorithms, greedy, math	1700	x3607
1157D	N Problems During K Days constructive algorithms, greedy, math	1900	x3602
1582E	Pchelyonok and Segments binary search, data structures, dp, greedy, math	2000	x3576
120C	Winnie-the-Pooh and honey implementation, math	1100	x3573
1060D	Social Circles greedy, math	1900	x3557
1332E	Height All the Same combinatorics, constructive algorithms, math, matrices	2100	x3551
321A	Ciel and Robot binary search, implementation, math	1700	x3548
1467D	Sum of Paths combinatorics, dp, math	2200	x3537
471C	MUH and House of Cards binary search, brute force, greedy, math	1700	x3533
566F	Clique in the Divisibility Graph dp, math, number theory	1500	x3516
1163C2	Power Transmission (Hard Edition) data structures, geometry, implementation, math	1900	x3512
1584D	Guess the Permutation binary search, combinatorics, interactive, math	2000	x3511
1450C2	Errich-Tac-Toe (Hard Version) constructive algorithms, math	2300	x3501
1567E	Non-Decreasing Dilemma data structures, divide and conquer, math	2200	x3495
1428E	Carrots for Rabbits binary search, data structures, greedy, math, sortings	2200	x3493
1867E1	Salyg1n and Array (simple version) constructive algorithms, interactive, math	2000	x3490
883M	Quadcopter Competition greedy, math	1100	x3487
269A	Magical Boxes greedy, math	1600	x3470
280C	Game on Tree implementation, math, probabilities, trees	2200	x3461
1905D	Cyclic MEX data structures, implementation, math, two pointers	2000	x3453
630L	Cracking the Code implementation, math	1400	x3444
622F	The Sum of the k-th Powers math	2600	x3444
546E	Soldier and Traveling flows, graphs, math	2100	x3434
917A	The Monster dp, greedy, implementation, math	1800	x3421
895B	XK Segments binary search, math, sortings, two pointers	1700	x3416
581D	Three Logos bitmasks, brute force, constructive algorithms, geometry, implementation, math	1700	x3411
842C	Ilya And The Tree dfs and similar, graphs, math, number theory, trees	2000	x3408
194B	Square math	1200	x3407
1266D	Decreasing Debts constructive algorithms, data structures, graphs, greedy, implementation, math, two pointers	2000	x3406
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3402
991E	Bus Number brute force, combinatorics, math	1800	x3399
940E	Cashback data structures, dp, greedy, math	2000	x3395
1361B	Johnny and Grandmaster greedy, implementation, math, sortings	1900	x3384
160C	Find Pair implementation, math, sortings	1700	x3380
38B	Chess brute force, implementation, math	1200	x3380
696B	Puzzles dfs and similar, math, probabilities, trees	1700	x3377
444A	DZY Loves Physics greedy, math	1600	x3365
1406D	Three Sequences constructive algorithms, data structures, greedy, math	2200	x3362
718C	Sasha and Array data structures, math, matrices	2300	x3359
632D	Longest Subsequence brute force, math, number theory	2100	x3359
62A	A Student's Dream greedy, math	1300	x3358
1515E	Phoenix and Computers combinatorics, dp, math	2200	x3348
1663B	Mike's Sequence *special problem, divide and conquer, implementation, math		x3345
1216E1	Numerical Sequence (easy version) binary search, brute force, math	1900	x3345
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3331