Problems Playground
Login
Min rating
Max rating
Tag
Reset
# Problem Tags Rating Solved
2206-A Compare Suffixes
interactive
3500
2205-G Simons and Diophantus Equation
bitmasks brute force data structures +2
3000
2205-F Simons and Reconstructing His Roads
constructive algorithms data structures dsu +1
2400
2205-E Simons and Dividing the Rhythm
combinatorics data structures dp +4
2100
2205-D Simons and Beating Peaks
data structures divide and conquer dp +3
1700
2205-C Simons and Posting Blogs
greedy sortings
1500
2205-B Simons and Cakes for Success
implementation math
800
2205-A Simons and Making It Beautiful
brute force constructive algorithms
800
2204-G Grid Path
dp graphs matrices
2700
2204-F Sum of Fractions
binary search brute force combinatorics +5
2200
2204-E Sum of Digits (and Again)
brute force constructive algorithms math
1800
2204-D Alternating Path
constructive algorithms dfs and similar graph matchings +1
1400
2204-C Spring
math number theory
1000
2204-B Right Maximum
greedy
800
2204-A Passing the Ball
brute force implementation
800
2203-F Binary Search with One Swap
binary search divide and conquer dp +3
2600
2203-E Probabilistic Card Game
binary search data structures games +3
2200
2203-D Divisibility Game
brute force games greedy +1
1700
2203-C Test Generator
binary search bitmasks greedy +1
1500
2203-B Beautiful Numbers
bitmasks dp fft +2
1000
2203-A Towers of Boxes
math
800
2202-G1 Monotone Monochrome Matrices (Easy Version)
data structures
2500
2202-B ABAB Construction
dp greedy implementation
1200
2202-A Parkour Design
math
800
2201-G Codeforces Heuristic Contest 1001
constructive algorithms
3500
2201-F2 Monotone Monochrome Matrices (Hard Version)
constructive algorithms data structures hashing +1
2800
2201-F1 Monotone Monochrome Matrices (Medium Version)
data structures hashing
2900
2201-E ABBA Counting
fft math number theory +1
2900
2201-D Binary Not Search and Queries
data structures greedy implementation
2500
2201-C Rigged Bracket Sequence
combinatorics dp greedy
2000
2201-B Recollect Numbers
constructive algorithms
1700
2201-A2 Lost Civilization (Hard Version)
data structures dp
1700
2201-A1 Lost Civilization (Easy Version)
data structures
1300
2200-H Six Seven
divide and conquer math number theory +2
2600
2200-G Operation Permutation
combinatorics dp math +1
2200
2200-F Mooclear Reactor 2
brute force data structures greedy +2
1900
2200-E Divisive Battle
games greedy math +1
1500
2200-D Portal
greedy sortings
1300
2200-C Specialty String
brute force greedy strings
900
2200-B Deletion Sort
bitmasks brute force greedy +1
800
2200-A Eating Game
greedy
800
2199-I Strange Process
*special
3000
2199-H Sum of MEX
*special combinatorics data structures +2
2300
2199-G Jammer
*special math
2500
2199-F Self-Produced Sequences
*special combinatorics math
2000
2199-E Supersequence
*special binary search greedy
2100
2199-D Two Arrays
*special math
1800
2199-C Minesweeper
*special constructive algorithms greedy
1600
2199-B Two Towers
*special greedy math
1400
2199-A Game
*special
1000