Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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Codeforces Round 941 (Div. 2)
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brute force

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Problems

#	Name
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory		x637
1957D	A BIT of an Inequality bitmasks, brute force, dp, math		x2590
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x545
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1053
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x2705
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x17221
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x887
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x2962
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x6417
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x663
1952F	Grid brute force		x1605
1952C	They Have Fooled brute force, schedules		x2663
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x2809
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7057
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x11159
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x19245
1949E	Damage per Second brute force, math		x74
1949B	Charming Meals binary search, brute force, greedy, sortings		x1521
1949A	Grove brute force, dfs and similar, dp, geometry, probabilities		x79
1948G	MST with Matching bitmasks, brute force, dsu, graph matchings, trees	3100	x565
1948E	Clique Partition brute force, constructive algorithms, graphs, greedy, implementation	2100	x2509
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x7918
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x13932
1948B	Array Fix brute force, dp, greedy, implementation	1100	x19957
1948A	Special Characters brute force, constructive algorithms	800	x25694
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x3843
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x456
1945C	Left and Right Houses brute force	1200	x12316
1943E1	MEX Game 2 (Easy Version) binary search, brute force, greedy	2900	x321
1943D1	Counting Is Fun (Easy Version) brute force, combinatorics, dp, math	2400	x1171
1942F	Farmer John's Favorite Function brute force, data structures, implementation, math	2700	x518
1941B	Rudolf and 121 brute force, dp, greedy, math	1000	x25875
1941A	Rudolf and the Ticket brute force, math	800	x38274
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1133
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x6997
1934E	Weird LCM Operations brute force, constructive algorithms, number theory	3000	x169
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x16300
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x845
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20149
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x13358
1931C	Make Equal Again brute force, greedy, math	1000	x25698
1931A	Recovering a Small String brute force, strings	800	x33241
1930F	Maximize the Difference bitmasks, brute force, dfs and similar	2700	x596
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x3637
1930B	Permutation Printing brute force, constructive algorithms, math	1000	x13356
1929F	Sasha and the Wedding Binary Search Tree brute force, combinatorics, data structures, dfs and similar, math, trees	2300	x1597
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1470
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x13041
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1504
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x3681
1928C	Physical Education Lesson brute force, math, number theory	1600	x7329
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x17993
1927C	Choose the Different Ones! brute force, greedy, math	1000	x25258
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1437
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x18034
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x317
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5122
1921G	Mischievous Shooter brute force, data structures, divide and conquer, dp, implementation	2200	x1104
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3397
1921E	Eat the Chip brute force, games, greedy, math	1600	x8792
1920F1	Smooth Sailing (Easy Version) binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths	2500	x866
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5043
1920C	Partitioning the Array brute force, math, number theory	1600	x11664
1920A	Satisfying Constraints brute force, greedy, math	800	x26340
1917C	Watering an Array brute force, greedy, implementation, math	1600	x9283
1917B	Erase First or Second Letter brute force, combinatorics, data structures, dp, strings	1100	x19166
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x581
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x7820
1915B	Not Quite Latin Square bitmasks, brute force, implementation	800	x38064
1914G1	Light Bulbs (Easy Version) brute force, combinatorics, dfs and similar, dp, dsu, graphs, math, trees	2100	x1649
1914E1	Game with Marbles (Easy Version) brute force, games, greedy, sortings	1400	x11032
1914D	Three Activities brute force, dp, greedy, implementation, sortings	1200	x17894
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x13485
1909F1	Small Permutation Problem (Easy Version) brute force, combinatorics, dp, math	2200	x1613
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1231
1907G	Lights brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	2200	x1726
1907E	Good Triples brute force, combinatorics, number theory	1600	x8665
1906A	Easy As ABC brute force	1000	x3464
1905F	Field Should Not Be Empty brute force, data structures, divide and conquer	2600	x442
1904D1	Set To Max (Easy Version) brute force, constructive algorithms, greedy	1600	x5585
1904C	Array Game binary search, brute force, data structures, sortings, two pointers	1400	x10424
1904A	Forked! brute force, implementation	900	x15552
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x5009
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x11212
1903A	Halloumi Boxes brute force, greedy, sortings	800	x23499
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x12101
1902B	Getting Points binary search, brute force, greedy	1100	x13207
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x3655
1899B	250 Thousand Tons of TNT brute force, implementation, number theory	1100	x17883
1898F	Vova Escapes the Matrix brute force, dfs and similar, divide and conquer, shortest paths	2600	x729
1898A	Milica and String brute force, implementation, strings	800	x14954
1896H2	Cyclic Hamming (Hard Version) brute force, dp, fft, math, number theory	3500	x84
1896H1	Cyclic Hamming (Easy Version) brute force, divide and conquer, dp, fft, math, number theory	3400	x77
1895E	Infinite Card Game binary search, brute force, data structures, dfs and similar, dp, dsu, games, graphs, greedy, sortings, two pointers	2300	x1446
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x10020
1893C	Freedom of Choice brute force, greedy, implementation	2000	x2408
1893A	Anonymous Informant brute force, dfs and similar, graphs, implementation	1400	x11158
1891E	Brukhovich and Exams brute force, greedy, implementation, math, sortings	2500	x769
1891D	Suspicious logarithms binary search, brute force, math	1900	x3682
1891B	Deja Vu brute force, math, sortings	1100	x15573

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