Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
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brute force

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Problems

#	Name
1981A	Turtle and Piggy Are Playing a Game brute force, greedy, math		x14063
1977D	XORificator bitmasks, brute force, greedy, hashing	2300	x1098
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x4519
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math	2600	x512
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x4180
1975C	Chamo and Mocha's Array binary search, brute force, greedy	1200	x10528
1975B	378QAQ and Mocha's Array brute force, greedy, math, sortings	1000	x13071
1975A	Bazoka and Mocha's Array brute force, greedy, implementation, sortings	800	x15017
1974F	Cutting Game binary search, brute force, data structures, implementation, sortings, two pointers	1900	x2596
1973F	Maximum GCD Sum Queries bitmasks, brute force, dp, implementation, number theory	3100	x135
1973D	Cat, Fox and Maximum Array Split brute force, interactive, math	2400	x1525
1973A	Chess For Three brute force, dp, implementation, math	900	x19973
1972A	Contest Proposal brute force, greedy, two pointers	800	x19584
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x7597
1970G2	Min-Fund Prison (Medium) brute force, dfs and similar, dp, graphs, trees	2200	x377
1970D1	Arithmancy (Easy) brute force, constructive algorithms, interactive, strings	2100	x438
1970A2	Balanced Unshuffle (Medium) brute force, constructive algorithms, trees	2400	x360
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1498
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x12443
1968A	Maximize? brute force, math, number theory	800	x28891
1967F	Next and Prev brute force, data structures, implementation	3200	x40
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1393
1967B2	Reverse Card (Hard Version) brute force, math, number theory	2200	x3297
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x10770
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x1052
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x3832
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x710
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1278
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3377
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x19632
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x1072
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3697
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x7472
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x706
1952F	Grid brute force		x1666
1952C	They Have Fooled brute force, schedules		x2754
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x3121
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7885
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x12438
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x20872
1949E	Damage per Second brute force, math	2900	x89
1949B	Charming Meals binary search, brute force, greedy, sortings	1500	x2120
1949A	Grove brute force, dfs and similar, dp, geometry, probabilities	3300	x89
1948G	MST with Matching bitmasks, brute force, dsu, graph matchings, trees	3100	x629
1948E	Clique Partition brute force, constructive algorithms, graphs, greedy, implementation	2100	x2680
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x8389
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x14868
1948B	Array Fix brute force, dp, greedy, implementation	1100	x20889
1948A	Special Characters brute force, constructive algorithms	800	x26726
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x4168
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x510
1945C	Left and Right Houses brute force	1200	x13263
1943E1	MEX Game 2 (Easy Version) binary search, brute force, greedy	2900	x380
1943D1	Counting Is Fun (Easy Version) brute force, combinatorics, dp, math	2400	x1287
1942F	Farmer John's Favorite Function brute force, data structures, implementation, math	2700	x585
1941B	Rudolf and 121 brute force, dp, greedy, math	1000	x26953
1941A	Rudolf and the Ticket brute force, math	800	x39510
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1195
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7295
1934E	Weird LCM Operations brute force, constructive algorithms, number theory	3000	x187
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x17032
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x894
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20870
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x14030
1931C	Make Equal Again brute force, greedy, math	1000	x26553
1931A	Recovering a Small String brute force, strings	800	x33965
1930F	Maximize the Difference bitmasks, brute force, dfs and similar	2700	x621
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x3744
1930B	Permutation Printing brute force, constructive algorithms, math	1000	x13881
1929F	Sasha and the Wedding Binary Search Tree brute force, combinatorics, data structures, dfs and similar, math, trees	2300	x1661
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1540
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x13515
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1578
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x3823
1928C	Physical Education Lesson brute force, math, number theory	1600	x7672
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x18690
1927C	Choose the Different Ones! brute force, greedy, math	1000	x25941
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1529
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x18503
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x338
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5285
1921G	Mischievous Shooter brute force, data structures, divide and conquer, dp, implementation	2200	x1143
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3503
1921E	Eat the Chip brute force, games, greedy, math	1600	x9031
1920F1	Smooth Sailing (Easy Version) binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths	2500	x896
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5169
1920C	Partitioning the Array brute force, math, number theory	1600	x12033
1920A	Satisfying Constraints brute force, greedy, math	800	x26680
1917C	Watering an Array brute force, greedy, implementation, math	1600	x9527
1917B	Erase First or Second Letter brute force, combinatorics, data structures, dp, strings	1100	x19757
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x585
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x7968
1915B	Not Quite Latin Square bitmasks, brute force, implementation	800	x39080
1914G1	Light Bulbs (Easy Version) brute force, combinatorics, dfs and similar, dp, dsu, graphs, math, trees	2100	x1698
1914E1	Game with Marbles (Easy Version) brute force, games, greedy, sortings	1400	x11283
1914D	Three Activities brute force, dp, greedy, implementation, sortings	1200	x18629
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x13910
1909F1	Small Permutation Problem (Easy Version) brute force, combinatorics, dp, math	2200	x1655
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1266
1907G	Lights brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	2200	x1778

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