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1736C1
Good Subarrays (Easy Version)
binary searchdata structuresschedulestwo pointers
1249C1
Good Numbers (easy version)
brute forcegreedyimplementation
2119C
A Good Problem
bitmasksconstructive algorithmsmath
1981B
Turtle and an Infinite Sequence
bitmasksmath
1810C
Make It Permutation
brute forcegreedysortings
1443B
Saving the City
dpgreedymathsortings
2026B
Black Cells
binary searchbrute forceconstructive algorithmsgreedy
2023A
Concatenation of Arrays
constructive algorithmsgreedymathsortings
1260B
Obtain Two Zeroes
binary searchmath
570B
Simple Game
constructive algorithmsgamesgreedyimplementationmath
1311C
Perform the Combo
brute force
1973B
Cat, Fox and the Lonely Array
binary searchbitmasksdata structuresgreedymathtwo pointers
1119B
Alyona and a Narrow Fridge
binary searchflowsgreedysortings
1733C
Parity Shuffle Sorting
constructive algorithmssortings
1555B
Two Tables
brute force
236B
Easy Number Challenge
implementationnumber theory
1902C
Insert and Equalize
brute forceconstructive algorithmsgreedymathnumber theory
1945D
Seraphim the Owl
dpgreedy
2129A
Double Perspective
constructive algorithmsdpdsugraphsgreedysortings
1851D
Prefix Permutation Sums
implementationmath
1937B
Binary Path
dpgreedyimplementation
1882B
Sets and Union
bitmasksbrute forceconstructive algorithmsgreedy
1693A
Directional Increase
greedy
1968D
Permutation Game
brute forcedfs and similargamesgraphsgreedymath
1627B
Not Sitting
gamesgreedysortings
1913C
Game with Multiset
binary searchbitmasksbrute forcegreedy
1418B
Negative Prefixes
greedysortings
2116B
Gellyfish and Baby's Breath
greedymathsortings
2072D
For Wizards, the Exam Is Easy, but I Couldn't Handle It
brute forcegreedyimplementation
1991C
Absolute Zero
constructive algorithmsgreedymath
1603A
Di-visible Confusion
constructive algorithmsmathnumber theory
1446A
Knapsack
constructive algorithmsgreedysortings
1978C
Manhattan Permutations
constructive algorithmsdata structuresgreedyimplementationmath
1844C
Particles
dpgreedyimplementationmath
2064C
Remove the Ends
brute forceconstructive algorithmsdpgreedy
1615B
And It's Non-Zero
bitmasksgreedymath
2112C
Coloring Game
binary searchbrute forcegreedytwo pointers
665C
Simple Strings
dpgreedystrings
2056B
Find the Permutation
brute forcedfs and similargraphsimplementationsortings
1407B
Big Vova
brute forcegreedymathnumber theory
1607D
Blue-Red Permutation
greedymathsortings
352B
Jeff and Periods
implementationsortings
2044E
Insane Problem
binary searchgreedyimplementationmathnumber theory
2033D
Kousuke's Assignment
data structuresdpdsugreedymath
1899E
Queue Sort
greedyimplementationsortings
1249B2
Books Exchange (hard version)
dfs and similardsumath
1741D
Masha and a Beautiful Tree
dfs and similardivide and conquergraphssortingstrees
2121D
1709
implementationsortings
573A
Bear and Poker
implementationmathnumber theory
1926D
Vlad and Division
bitmasksgreedy