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# Problem Tags Rating Solved
1866-L Lihmuf Balling
binary search brute force math
2400
1866-K Keen Tree Calculation
binary search data structures dp +4
2500
1866-J Jackets and Packets
dp
2800
1866-I Imagination Castle
dp games two pointers
2300
1866-H Happy Sets
combinatorics
2100
1866-G Grouped Carriages
binary search data structures dp +2
2100
1866-F Freak Joker Process
binary search data structures sortings
3100
1866-E Elevators of Tamem
dp
2700
1866-D Digital Wallet
dp greedy
2300
1866-C Completely Searching for Inversions
dfs and similar dp graphs
1900
1866-B Battling with Numbers
combinatorics math number theory
1400
1866-A Ambitious Kid
math
800
1864-I Future Dominators
graphs greedy
3500
1864-H Asterism Stream
dp math matrices
3200
1864-G Magic Square
combinatorics constructive algorithms implementation
3100
1864-F Exotic Queries
data structures implementation sortings
2300
1864-E Guess Game
bitmasks data structures games +5
2100
1864-D Matrix Cascade
brute force constructive algorithms data structures +3
1700
1864-C Divisor Chain
bitmasks constructive algorithms math +1
1300
1864-B Swap and Reverse
constructive algorithms greedy sortings +1
1100
1864-A Increasing and Decreasing
constructive algorithms greedy implementation +1
800
1863-I Redundant Routes
constructive algorithms dp trees
3500
1863-H Goldberg Machine 3
dp trees
3500
1863-G Swaps
combinatorics dp graphs +1
2800
1863-F Divide, XOR, and Conquer
bitmasks dp math
2600
1863-E Speedrun
brute force dfs and similar dp +5
2100
1863-D Two-Colored Dominoes
constructive algorithms greedy
1400
1863-C MEX Repetition
implementation math
1100
1863-B Split Sort
greedy math sortings
1100
1863-A Channel
greedy implementation
800
1862-G The Great Equalizer
binary search data structures math +1
2000
1862-F Magic Will Save the World
binary search bitmasks brute force +1
1800
1862-E Kolya and Movie Theatre
constructive algorithms data structures greedy
1600
1862-D Ice Cream Balls
binary search combinatorics constructive algorithms +1
1300
1862-C Flower City Fence
binary search data structures implementation +1
1100
1862-B Sequence Game
constructive algorithms
800
1862-A Gift Carpet
dp greedy implementation +1
800
1861-F Four Suits
binary search bitmasks flows +1
3200
1861-E Non-Intersecting Subpermutations
combinatorics dp implementation +1
2300
1861-D Sorting By Multiplication
dp greedy
1800
1861-C Queries for the Array
data structures dfs and similar implementation +2
1600
1861-B Two Binary Strings
constructive algorithms dp greedy
1000
1861-A Prime Deletion
constructive algorithms math
800
1860-F Evaluate RBS
data structures geometry implementation +2
2900
1860-E Fast Travel Text Editor
data structures dfs and similar graphs +1
2400
1860-D Balanced String
dp
2200
1860-C Game on Permutation
data structures dp games +1
1400
1860-B Fancy Coins
binary search brute force greedy +1
1200
1860-A Not a Substring
constructive algorithms strings
900
1859-F Teleportation in Byteland
data structures dfs and similar divide and conquer +3
3200