数据边界这里不保存完整题面、样例或题解。点击原题链接后在 Codeforces 页面完成训练。
2162B
Beautiful String
brute forceconstructive algorithms
1550B
Maximum Cost Deletion
greedymath
1800B
Count the Number of Pairs
greedystrings
352A
Jeff and Digits
brute forceimplementationmath
2060B
Farmer John's Card Game
greedysortings
2091C
Combination Lock
constructive algorithmsgreedy
1359B
New Theatre Square
brute forcedpgreedyimplementationtwo pointers
1968C
Assembly via Remainders
constructive algorithmsnumber theory
1676D
X-Sum
brute forcegreedyimplementation
1373A
Donut Shops
greedyimplementationmath
237A
Free Cash
implementation
2193C
Replace and Sum
data structuresgreedy
75A
Life Without Zeros
implementation
1725B
Basketball Together
binary searchgreedysortings
1469A
Regular Bracket Sequence
constructive algorithmsgreedy
978C
Letters
binary searchimplementationtwo pointers
1614B
Divan and a New Project
constructive algorithmssortings
1438B
Valerii Against Everyone
constructive algorithmsdata structuresgreedysortings
1986B
Matrix Stabilization
brute forcedata structuresgreedysortings
1907B
YetnotherrokenKeoard
data structuresimplementationstrings
2167D
Yet Another Array Problem
brute forceimplementationmathnumber theory
2093C
Simple Repetition
mathnumber theory
1469B
Red and Blue
dpgreedy
2114C
Need More Arrays
dpgreedy
2123C
Prefix Min and Suffix Max
brute forcedata structures
1704B
Luke is a Foodie
brute forcegreedyimplementation
2000C
Numeric String Template
data structuresstrings
1411B
Fair Numbers
brute forcenumber theory
1927C
Choose the Different Ones!
brute forcegreedymath
1359A
Berland Poker
brute forcegreedymath
2004B
Game with Doors
brute forcegreedy
102B
Sum of Digits
implementation
1916B
Two Divisors
constructive algorithmsmathnumber theory
1955B
Progressive Square
constructive algorithmsdata structuresimplementationsortings
1659A
Red Versus Blue
constructive algorithmsgreedyimplementationmath
1256A
Payment Without Change
math
1632B
Roof Construction
bitmasksconstructive algorithms
219A
k-String
implementationstrings
1620B
Triangles on a Rectangle
geometrygreedymath
1326A
Bad Ugly Numbers
constructive algorithmsnumber theory
1765M
Minimum LCM
mathnumber theory
1931C
Make Equal Again
brute forcegreedymath
1567B
MEXor Mixup
bitmasksgreedy
1485A
Add and Divide
brute forcegreedymathnumber theory
1829D
Gold Rush
brute forcedfs and similardpimplementation
1520C
Not Adjacent Matrix
constructive algorithms
766A
Mahmoud and Longest Uncommon Subsequence
constructive algorithmsstrings
118B
Present from Lena
constructive algorithmsimplementation
1715B
Beautiful Array
constructive algorithmsgreedymath
1941B
Rudolf and 121
brute forcedpgreedymath