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# Problem Tags Rating Solved
2115-D Gellyfish and Forget-Me-Not
bitmasks dp games +2
2900
2115-C Gellyfish and Eternal Violet
combinatorics dp greedy +2
2700
2115-B Gellyfish and Camellia Japonica
brute force constructive algorithms dfs and similar +4
2100
2115-A Gellyfish and Flaming Peony
constructive algorithms dp math +1
1500
2114-G Build an Array
brute force constructive algorithms dp +3
2200
2114-F Small Operations
binary search brute force dfs and similar +4
2000
2114-E Kirei Attacks the Estate
dfs and similar dp greedy +1
1400
2114-D Come a Little Closer
brute force greedy implementation +1
1400
2114-C Need More Arrays
dp greedy
1000
2114-B Not Quite a Palindromic String
greedy math
900
2114-A Square Year
binary search brute force math
800
2113-F Two Arrays
constructive algorithms dfs and similar graphs +1
2500
2113-E From Kazan with Love
dfs and similar graphs implementation +1
2800
2113-D Cheater
binary search constructive algorithms greedy +1
2200
2113-C Smilo and Minecraft
brute force constructive algorithms greedy
1700
2113-B Good Start
constructive algorithms math
1200
2113-A Shashliks
greedy math
800
2112-F Variables and Operations
graphs greedy shortest paths
2800
2112-E Tree Colorings
combinatorics dfs and similar dp +4
2200
2112-D Reachability and Tree
constructive algorithms dfs and similar graphs +1
1700
2112-C Coloring Game
binary search brute force greedy +1
1300
2112-B Shrinking Array
brute force greedy
1100
2112-A Race
implementation math
800
2111-G Divisible Subarrays
binary search bitmasks brute force +2
2900
2111-F Puzzle
brute force constructive algorithms greedy +1
2400
2111-E Changing the String
binary search data structures greedy +3
1900
2111-D Creating a Schedule
constructive algorithms data structures greedy +2
1400
2111-C Equal Values
brute force greedy two pointers
1100
2111-B Fibonacci Cubes
brute force dp implementation +1
1100
2111-A Energy Crystals
greedy implementation math
800
2110-F Faculty
brute force greedy math +1
2400
2110-E Melody
dfs and similar graphs implementation
2300
2110-D Fewer Batteries
binary search dfs and similar dp +3
1700
2110-C Racing
constructive algorithms greedy
1400
2110-B Down with Brackets
strings
900
2110-A Fashionable Array
implementation sortings
800
2109-F Penguin Steps
binary search dfs and similar flows +2
3000
2109-E Binary String Wowee
combinatorics dp strings
2400
2109-D D/D/D
dfs and similar graphs greedy +1
1900
2109-C3 Hacking Numbers (Hard Version)
constructive algorithms interactive math +1
2600
2109-C2 Hacking Numbers (Medium Version)
constructive algorithms interactive math +1
1700
2109-C1 Hacking Numbers (Easy Version)
bitmasks constructive algorithms interactive +2
1500
2109-B Slice to Survive
bitmasks greedy math
1200
2109-A It's Time To Duel
implementation
800
2108-F Fallen Towers
binary search greedy
2900
2108-E Spruce Dispute
constructive algorithms dfs and similar graphs +4
2600
2108-D Needle in a Numstack
binary search brute force implementation +1
2200
2108-C Neo's Escape
binary search brute force data structures +5
1500
2108-B SUMdamental Decomposition
bitmasks constructive algorithms greedy +2
1300
2108-A Permutation Warm-Up
combinatorics greedy math
800