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2061D
Kevin and Numbers
bitmasksdata structures
607A
Chain Reaction
binary searchdp
2046B
Move Back at a Cost
binary searchdata structuresgreedysortings
1282B2
K for the Price of One (Hard Version)
dpgreedysortings
678C
Joty and Chocolate
implementationmathnumber theory
1680C
Binary String
binary searchgreedystringstwo pointers
2167G
Mukhammadali and the Smooth Array
data structuresdp
2070D
Tree Jumps
dfs and similardptrees
2043C
Sums on Segments
binary searchbrute forcedata structuresdpgreedymath
1512E
Permutation by Sum
brute forcegreedymath
1687A
The Enchanted Forest
brute forcegreedy
1778C
Flexible String
bitmasksbrute forcestrings
1921E
Eat the Chip
brute forcegamesgreedymath
1582D
Vupsen, Pupsen and 0
constructive algorithmsmath
2094F
Trulimero Trulicina
constructive algorithms
722C
Destroying Array
data structuresdsu
1469C
Building a Fence
dpgreedyimplementationtwo pointers
1006E
Military Problem
dfs and similargraphstrees
1660D
Maximum Product Strikes Back
brute forceimplementationmathtwo pointers
1771C
Hossam and Trainees
greedymathnumber theory
1217B
Zmei Gorynich
greedymath
763A
Timofey and a tree
dfs and similardpdsugraphsimplementationtrees
1957C
How Does the Rook Move?
combinatoricsdpmath
1941E
Rudolf and k Bridges
binary searchdata structuresdptwo pointers
2117E
Lost Soul
brute forcegreedy
369C
Valera and Elections
dfs and similargraphstrees
2051E
Best Price
binary searchbrute forcedata structuresgreedysortings
2065E
Skibidus and Rizz
constructive algorithmsgreedystrings
1213D2
Equalizing by Division (hard version)
brute forcemathsortings
1796C
Maximum Set
binary searchmath
1476C
Longest Simple Cycle
dpgraphsgreedy
1985G
D-Function
combinatoricsmathnumber theory
1498C
Planar Reflections
brute forcedata structuresdp
1861C
Queries for the Array
data structuresdfs and similarimplementationstringstrees
1481C
Fence Painting
brute forceconstructive algorithmsgreedy
1822E
Making Anti-Palindromes
greedymathstrings
1917C
Watering an Array
brute forcegreedyimplementationmath
1511D
Min Cost String
brute forceconstructive algorithmsgraphsgreedystrings
1175B
Catch Overflow!
data structuresexpression parsingimplementation
1976C
Job Interview
binary searchdpgreedyimplementationtwo pointers
1849C
Binary String Copying
binary searchbrute forcedata structureshashingstrings
1971F
Circle Perimeter
binary searchbrute forcedfs and similargeometryimplementationmath
453A
Little Pony and Expected Maximum
probabilities
1294D
MEX maximizing
data structuresgreedyimplementationmath
1996E
Decode
combinatoricsdata structuresimplementationmath
2059C
Customer Service
brute forceconstructive algorithmsgraph matchingsgreedymathsortings
616D
Longest k-Good Segment
binary searchdata structurestwo pointers
2018A
Cards Partition
2-satbrute forcegreedyimplementationmath
1968E
Cells Arrangement
constructive algorithms