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# Problem Tags Rating Solved
2031-D Penchick and Desert Rabbit
binary search data structures dfs and similar +5
1700
2031-C Penchick and BBQ Buns
constructive algorithms math number theory
1300
2031-B Penchick and Satay Sticks
brute force greedy sortings
900
2031-A Penchick and Modern Monument
constructive algorithms dp greedy +1
800
2030-G2 The Destruction of the Universe (Hard Version)
combinatorics math
3100
2030-G1 The Destruction of the Universe (Easy Version)
combinatorics greedy math
2900
2030-F Orangutan Approved Subarrays
binary search data structures dp +3
2400
2030-E MEXimize the Score
combinatorics data structures dp +3
2200
2030-D QED's Favorite Permutation
data structures implementation sortings
1700
2030-C A TRUE Battle
brute force games greedy
1100
2030-B Minimise Oneness
combinatorics constructive algorithms games +1
800
2030-A A Gift From Orangutan
constructive algorithms greedy math +1
800
2029-I Variance Challenge
flows graphs greedy
3400
2029-H Message Spread
bitmasks brute force combinatorics +1
3500
2029-G Balanced Problem
data structures dp
3000
2029-F Palindrome Everywhere
constructive algorithms graphs greedy
2500
2029-E Common Generator
brute force constructive algorithms math +1
2100
2029-D Cool Graph
constructive algorithms data structures dfs and similar +4
1900
2029-C New Rating
binary search data structures dp +1
1700
2029-B Replacement
constructive algorithms games strings
1100
2029-A Set
greedy math
800
2028-F Alice's Adventures in Addition
bitmasks brute force dp +1
2700
2028-E Alice's Adventures in the Rabbit Hole
combinatorics dfs and similar dp +5
2300
2028-D Alice's Adventures in Cards
constructive algorithms data structures dp +4
2000
2028-C Alice's Adventures in Cutting Cake
binary search dp greedy +1
1600
2028-B Alice's Adventures in Permuting
binary search implementation math
1400
2028-A Alice's Adventures in ''Chess''
brute force implementation math
900
2027-E2 Bit Game (Hard Version)
bitmasks dp math
3100
2027-E1 Bit Game (Easy Version)
bitmasks brute force games +1
2800
2027-D2 The Endspeaker (Hard Version)
binary search data structures dp +3
2200
2027-D1 The Endspeaker (Easy Version)
binary search dp graphs +3
1700
2027-C Add Zeros
brute force data structures dfs and similar +3
1500
2027-B Stalin Sort
brute force greedy
1100
2027-A Rectangle Arrangement
geometry implementation math
800
2026-F Bermart Ice Cream
data structures dfs and similar divide and conquer +3
2700
2026-E Best Subsequence
bitmasks dfs and similar flows +2
2500
2026-D Sums of Segments
binary search data structures dp +2
1900
2026-C Action Figures
binary search brute force constructive algorithms +3
1500
2026-B Black Cells
binary search brute force constructive algorithms +1
1300
2026-A Perpendicular Segments
constructive algorithms geometry greedy +1
900
2025-G Variable Damage
data structures flows
3000
2025-F Choose Your Queries
constructive algorithms dfs and similar dp +3
2700
2025-E Card Game
combinatorics dp fft +2
2200
2025-D Attribute Checks
brute force data structures dp +3
1800
2025-C New Game
binary search brute force greedy +3
1300
2025-B Binomial Coefficients, Kind Of
combinatorics dp math
1100
2025-A Two Screens
binary search greedy strings +1
800
2024-B Buying Lemonade
binary search constructive algorithms sortings
1100
2024-A Profitable Interest Rate
greedy math
800
2023-F Hills and Pits
data structures greedy math +1
3500