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# Problem Tags Rating Solved
489-E Hiking
binary search dp
2300
489-D Unbearable Controversy of Being
brute force combinatorics dfs and similar +1
1700
489-C Given Length and Sum of Digits...
dp greedy implementation
1400
489-B BerSU Ball
dfs and similar dp graph matchings +3
1200
489-A SwapSort
greedy implementation sortings
1200
488-B Candy Boxes
brute force constructive algorithms math
1900
488-A Giga Tower
brute force
1100
487-E Tourists
data structures dfs and similar graphs +1
3200
487-D Conveyor Belts
data structures
2700
487-C Prefix Product Sequence
constructive algorithms math number theory
2300
487-B Strip
binary search data structures dp +1
2000
487-A Fight the Monster
binary search brute force implementation
1800
486-E LIS of Sequence
data structures dp greedy +2
2200
486-D Valid Sets
dfs and similar dp math +1
2100
486-C Palindrome Transformation
brute force greedy implementation
1700
486-B OR in Matrix
greedy hashing implementation
1300
486-A Calculating Function
implementation math
800
485-B Valuable Resources
brute force greedy
1300
485-A Factory
implementation math matrices
1400
484-E Sign on Fence
binary search constructive algorithms data structures
2500
484-D Kindergarten
data structures dp greedy
2400
484-C Strange Sorting
implementation math
2600
484-B Maximum Value
binary search math sortings +1
2100
484-A Bits
bitmasks constructive algorithms
1700
483-B Friends and Presents
binary search math
1800
483-A Counterexample
brute force implementation math +1
1100
482-E ELCA
data structures trees
3200
482-D Random Function and Tree
combinatorics dp trees
2700
482-C Game with Strings
bitmasks dp probabilities
2600
482-B Interesting Array
constructive algorithms data structures trees
1800
482-A Diverse Permutation
constructive algorithms greedy
1200
480-E Parking Lot
data structures divide and conquer
2800
480-D Parcels
dp graphs
2600
479-E Riding in a Lift
combinatorics dp
1900
479-D Long Jumps
binary search greedy implementation
1700
479-C Exams
greedy sortings
1400
479-B Towers
brute force constructive algorithms greedy +2
1400
479-A Expression
brute force math
1000
478-E Wavy numbers
brute force dfs and similar meet-in-the-middle +1
2900
478-D Red-Green Towers
dp
2000
478-C Table Decorations
greedy
1800
478-B Random Teams
combinatorics constructive algorithms greedy +1
1300
478-A Initial Bet
implementation
1100
477-E Dreamoon and Notepad
data structures
3100
477-D Dreamoon and Binary
dp strings
2700
476-E Dreamoon and Strings
dp strings
2200
476-D Dreamoon and Sets
constructive algorithms greedy math
1900
476-C Dreamoon and Sums
math
1600
476-B Dreamoon and WiFi
bitmasks brute force combinatorics +3
1300
476-A Dreamoon and Stairs
implementation math
1000