Problems Playground
Login
Min rating
Max rating
Tag
Reset
# Problem Tags Rating Solved
1835-B Lottery
binary search brute force greedy +2
2500
1835-A k-th equality
brute force implementation math
1700
1834-F Typewriter
brute force math
2500
1834-E MEX of LCM
binary search data structures implementation +2
2300
1834-D Survey in Class
brute force data structures greedy +2
1900
1834-C Game with Reversing
games greedy math +1
1200
1834-B Maximum Strength
greedy math
1000
1834-A Unit Array
greedy math
800
1833-G Ksyusha and Chinchilla
constructive algorithms dfs and similar dp +4
1800
1833-F Ira and Flamenco
combinatorics constructive algorithms data structures +4
1700
1833-E Round Dance
dfs and similar dsu graphs +1
1600
1833-D Flipper
brute force constructive algorithms greedy
1400
1833-C Vlad Building Beautiful Array
greedy math
800
1833-B Restore the Weather
greedy sortings
900
1833-A Musical Puzzle
implementation strings
800
1832-F Zombies
binary search dp
3200
1832-E Combinatorics Problem
brute force combinatorics dp
2200
1832-D2 Red-Blue Operations (Hard Version)
binary search constructive algorithms greedy +2
2400
1832-D1 Red-Blue Operations (Easy Version)
binary search greedy implementation +1
2100
1832-C Contrast Value
greedy implementation
1200
1832-B Maximum Sum
brute force sortings two pointers
1100
1832-A New Palindrome
strings
800
1831-B Array merging
constructive algorithms greedy
1000
1831-A Twin Permutations
constructive algorithms
800
1830-F The Third Grace
data structures dp
3200
1830-E Bully Sort
data structures math
3500
1830-D Mex Tree
brute force dp trees
2800
1830-C Hyperregular Bracket Strings
combinatorics greedy hashing +3
2400
1830-B The BOSS Can Count Pairs
brute force math
2000
1830-A Copil Copac Draws Trees
dfs and similar dp graphs +1
1400
1829-H Don't Blame Me
bitmasks combinatorics dp +1
1700
1829-G Hits Different
data structures dp implementation +1
1600
1829-F Forever Winter
dfs and similar graphs math
1300
1829-E The Lakes
dfs and similar dsu graphs +1
1100
1829-D Gold Rush
brute force dfs and similar dp +1
1000
1829-C Mr. Perfectly Fine
bitmasks greedy implementation
800
1829-B Blank Space
implementation
800
1829-A Love Story
implementation strings
800
1828-B Permutation Swap
math number theory
900
1828-A Divisible Array
constructive algorithms math
800
1827-F Copium Permutation
constructive algorithms data structures greedy
3500
1827-E Bus Routes
binary search constructive algorithms dfs and similar +2
3400
1827-D Two Centroids
data structures dfs and similar greedy +1
2800
1827-C Palindrome Partition
binary search brute force data structures +3
2600
1827-B2 Range Sorting (Hard Version)
binary search data structures dp +1
2400
1827-B1 Range Sorting (Easy Version)
binary search dp dsu +3
2000
1827-A Counting Orders
combinatorics math sortings +1
1100
1826-F Fading into Fog
geometry interactive math +1
2800
1826-E Walk the Runway
bitmasks brute force data structures +4
2400
1826-D Running Miles
brute force dp greedy
1700