Problemset - Codeforces

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

#	Name
724C	Ray Tracing greedy, hashing, implementation, math, number theory, sortings	1800	x2103
431D	Random Task binary search, bitmasks, combinatorics, dp, math	2100	x2103
730G	Car Repair Shop implementation	1600	x2099
316A2	Special Task math	1400	x2097
229D	Towers dp, greedy, two pointers	2100	x2096
1553F	Pairwise Modulo data structures, math	2300	x2095
769C	Cycle In Maze *special problem, dfs and similar, graphs, greedy, shortest paths	1700	x2095
553B	Kyoya and Permutation binary search, combinatorics, constructive algorithms, greedy, implementation, math	1900	x2094
803E	Roma and Poker dp, graphs	2000	x2092
442A	Borya and Hanabi bitmasks, brute force, implementation	1700	x2092
1100F	Ivan and Burgers data structures, divide and conquer, greedy, math	2500	x2091
526D	Om Nom and Necklace hashing, string suffix structures, strings	2200	x2091
1837E	Playoff Fixing combinatorics, trees	2200	x2089
1672E	notepad.exe binary search, constructive algorithms, greedy, interactive	2200	x2089
1251E1	Voting (Easy Version) data structures, dp, greedy	2300	x2089
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2089
776E	The Holmes Children math, number theory	2100	x2088
167B	Wizards and Huge Prize dp, math, probabilities	1800	x2085
427D	Match & Catch dp, string suffix structures, strings	2200	x2084
386B	Fly, freebies, fly! binary search, brute force, implementation	1400	x2082
1916E	Happy Life in University data structures, dfs and similar, greedy, trees	2300	x2081
1249F	Maximum Weight Subset dp, trees	2200	x2081
1695D1	Tree Queries (Easy Version) brute force, constructive algorithms, dfs and similar, dp, greedy, trees	2200	x2078
38C	Blinds brute force	1400	x2078
1358E	Are You Fired? constructive algorithms, data structures, greedy, implementation	2400	x2077
488B	Candy Boxes brute force, constructive algorithms, math	1900	x2076
222C	Reducing Fractions implementation, math, number theory, sortings	1800	x2076
1523D	Love-Hate bitmasks, brute force, dp, probabilities	2400	x2075
402E	Strictly Positive Matrix graphs, math	2200	x2075
1527E	Partition Game binary search, data structures, divide and conquer, dp	2500	x2073
1562D2	Two Hundred Twenty One (hard version) data structures, math	2200	x2072
1034B	Little C Loves 3 II brute force, constructive algorithms, flows, graph matchings	2200	x2071
348C	Subset Sums brute force, data structures	2500	x2070
490D	Chocolate brute force, dfs and similar, math, meet-in-the-middle, number theory	1900	x2069
930C	Teodor is not a liar! data structures, dp	1900	x2068
1266E	Spaceship Solitaire data structures, greedy, implementation	2100	x2067
19D	Points data structures	2800	x2063
1461E	Water Level brute force, graphs, greedy, implementation, math	2200	x2059
1322C	Instant Noodles graphs, hashing, math, number theory	2300	x2059
666B	World Tour graphs, shortest paths	2000	x2058
1158B	The minimal unique substring constructive algorithms, math, strings	2200	x2055
404D	Minesweeper 1D dp, implementation	1900	x2055
314A	Sereja and Contest implementation	1600	x2055
18B	Platforms brute force, math	1700	x2055
965C	Greedy Arkady math	2000	x2053
515E	Drazil and Park data structures	2300	x2052
466E	Information Graph dfs and similar, dsu, graphs, trees	2100	x2052
1282D	Enchanted Artifact constructive algorithms, interactive, strings	2300	x2051
1837F	Editorial for Two binary search, data structures, greedy, implementation	2400	x2050
67A	Partial Teacher dp, graphs, greedy, implementation	1800	x2049
1832E	Combinatorics Problem brute force, combinatorics, dp	2200	x2048
896B	Ithea Plays With Chtholly binary search, constructive algorithms, games, greedy, interactive	2000	x2047
296B	Yaroslav and Two Strings combinatorics, dp	2000	x2047
32C	Flea math	1700	x2047
1729G	Cut Substrings combinatorics, dp, hashing, strings, two pointers	2100	x2046
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x2044
528D	Fuzzy Search bitmasks, brute force, fft	2500	x2044
739E	Gosha is hunting brute force, data structures, dp, flows, math, probabilities, sortings	3000	x2043
1491E	Fib-tree brute force, dfs and similar, divide and conquer, number theory, trees	2400	x2041
73C	LionAge II dp	1800	x2040
623B	Array GCD dp, greedy, number theory	2300	x2039
1834E	MEX of LCM binary search, data structures, implementation, math, number theory	2300	x2038
409F	000001 *special problem	1900	x2037
348B	Apple Tree dfs and similar, number theory, trees	2100	x2037
929B	Места в самолёте *special problem, implementation	1300	x2036
1712E1	LCM Sum (easy version) binary search, brute force, combinatorics, math, number theory, two pointers	2300	x2033
305B	Continued Fractions brute force, implementation, math	1700	x2032
958D1	Hyperspace Jump (easy) expression parsing, math	1400	x2029
1801D	The way home binary search, data structures, dp, graphs, greedy, shortest paths, sortings	2100	x2028
1270G	Subset with Zero Sum constructive algorithms, dfs and similar, graphs, math	2700	x2028
177D1	Encrypting Messages brute force	1200	x2027
1898E	Sofia and Strings data structures, greedy, sortings, strings, two pointers	2200	x2025
506D	Mr. Kitayuta's Colorful Graph brute force, dfs and similar, dsu, graphs	2400	x2021
369E	Valera and Queries binary search, data structures	2200	x2020
360A	Levko and Array Recovery greedy, implementation	1700	x2019
1165F2	Microtransactions (hard version) binary search, greedy, implementation	2000	x2018
1340C	Nastya and Unexpected Guest dfs and similar, dp, graphs, shortest paths	2400	x2017
340B	Maximal Area Quadrilateral brute force, geometry	2100	x2017
1181D	Irrigation binary search, data structures, implementation, sortings, trees, two pointers	2200	x2016
486E	LIS of Sequence data structures, dp, greedy, hashing, math	2200	x2015
82B	Sets constructive algorithms, hashing, implementation	1700	x2015
1783E	Game of the Year brute force, data structures, math, number theory	2300	x2014
1369E	DeadLee data structures, dfs and similar, greedy, implementation, sortings	2400	x2013
922E	Birds dp	2200	x2012
167A	Wizards and Trolleybuses implementation, math	1600	x2010
571A	Lengthening Sticks combinatorics, implementation, math	2100	x2006
59C	Title expression parsing	1600	x2005
21C	Stripe 2 binary search, dp, sortings	2000	x2005
540E	Infinite Inversions binary search, data structures, implementation, sortings, trees	2100	x2004
238A	Not Wool Sequences constructive algorithms, math	1300	x2004
1919F1	Wine Factory (Easy Version) data structures, greedy	2300	x2003
5E	Bindian Signalizing data structures	2400	x2003
788C	The Great Mixing dfs and similar, graphs, shortest paths	2300	x2001
601B	Lipshitz Sequence data structures, math	2100	x2001
1619F	Let's Play the Hat? brute force, constructive algorithms, greedy, math	2000	x1999
1166D	Cute Sequences binary search, brute force, greedy, math	2200	x1997
54A	Presents implementation	1300	x1996
1070C	Cloud Computing data structures, greedy	2000	x1995
1481E	Sorting Books data structures, dp, greedy	2500	x1994
509C	Sums of Digits dp, greedy, implementation	2000	x1994