1927E
Klever Permutation
constructive algorithmsmathtwo pointers
Rating 1400
原题Codeforces 训练
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1691C
Sum of Substrings
brute forceconstructive algorithmsgreedymathstrings
Rating 1400
原题1451C
String Equality
dpgreedyhashingimplementationstrings
Rating 1400
原题2126E
G-C-D, Unlucky!
mathnumber theory
Rating 1400
原题1393B
Applejack and Storages
constructive algorithmsdata structuresgreedyimplementation
Rating 1400
原题1929C
Sasha and the Casino
binary searchbrute forceconstructive algorithmsgamesgreedymath
Rating 1400
原题2055C
The Trail
brute forceconstructive algorithmsgreedymathtwo pointers
Rating 1400
原题448B
Suffix Structures
implementationstrings
Rating 1400
原题1790E
Vlad and a Pair of Numbers
bitmasksconstructive algorithms
Rating 1400
原题1838C
No Prime Differences
constructive algorithmsmathnumber theory
Rating 1400
原题1980D
GCD-sequence
greedyimplementationmathnumber theory
Rating 1400
原题2131E
Adjacent XOR
brute forcegreedy
Rating 1400
原题1548A
Web of Lies
brute forcegraphsgreedy
Rating 1400
原题1535C
Unstable String
binary searchdpgreedyimplementationstringstwo pointers
Rating 1400
原题2009E
Klee's SUPER DUPER LARGE Array!!!
binary searchmathternary search
Rating 1400
原题1974D
Ingenuity-2
constructive algorithmsgreedyimplementation
Rating 1400
原题1728C
Digital Logarithm
data structuresgreedysortings
Rating 1400
原题2033C
Sakurako's Field Trip
dpgreedytwo pointers
Rating 1400
原题1986D
Mathematical Problem
brute forcedpgreedyimplementationmathtwo pointers
Rating 1400
原题1462D
Add to Neighbour and Remove
greedymathnumber theory
Rating 1400
原题1143C
Queen
dfs and similartrees
Rating 1400
原题1312C
Adding Powers
bitmasksgreedyimplementationmathnumber theoryternary search
Rating 1400
原题2020C
Bitwise Balancing
bitmaskshashingimplementationmathschedulesternary search
Rating 1400
原题1579D
Productive Meeting
constructive algorithmsgraphsgreedy
Rating 1400
原题1923C
Find B
constructive algorithmsgreedy
Rating 1400
原题1772D
Absolute Sorting
constructive algorithmsmath
Rating 1400
原题1955D
Inaccurate Subsequence Search
data structurestwo pointers
Rating 1400
原题1515C
Phoenix and Towers
constructive algorithmsdata structuresgreedy
Rating 1400
原题1605C
Dominant Character
brute forcegreedyimplementationstrings
Rating 1400
原题1215B
The Number of Products
combinatoricsdpimplementation
Rating 1400
原题2009D
Satyam and Counting
geometrymath
Rating 1400
原题289B
Polo the Penguin and Matrix
brute forcedpimplementationsortingsternary search
Rating 1400
原题1355D
Game With Array
constructive algorithmsmath
Rating 1400
原题1932C
LR-remainders
brute forcedata structuresimplementationmathtwo pointers
Rating 1400
原题1974C
Beautiful Triple Pairs
combinatoricsdata structures
Rating 1400
原题1332B
Composite Coloring
brute forceconstructive algorithmsgreedymathnumber theory
Rating 1400
原题1624D
Palindromes Coloring
binary searchgreedysortingsstrings
Rating 1400
原题538B
Quasi Binary
constructive algorithmsdpgreedyimplementation
Rating 1400
原题1648A
Weird Sum
combinatoricsdata structuresgeometrymathmatricessortings
Rating 1400
原题546C
Soldier and Cards
brute forcedfs and similargames
Rating 1400
原题1095C
Powers Of Two
bitmasksgreedy
Rating 1400
原题1245C
Constanze's Machine
dp
Rating 1400
原题1883G1
Dances (Easy version)
binary searchgreedytwo pointers
Rating 1400
原题1513B
AND Sequences
bitmaskscombinatoricsconstructive algorithmsmath
Rating 1400
原题977D
Divide by three, multiply by two
dfs and similarmathsortings
Rating 1400
原题1369C
RationalLee
greedymathsortingstwo pointers
Rating 1400
原题1830A
Copil Copac Draws Trees
dfs and similardpgraphstrees
Rating 1400
原题1759D
Make It Round
brute forcenumber theory
Rating 1400
原题1490E
Accidental Victory
binary searchdata structuresgreedy
Rating 1400
原题1183D
Candy Box (easy version)
greedysortings
Rating 1400
原题