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# Problem Tags Rating Solved
2168-B Locate
binary search combinatorics communication +3
2168-A2 Encode and Decode (Hard Version)
bitmasks communication interactive +1
2168-A1 Encode and Decode (Easy Version)
communication constructive algorithms interactive
2167-G Mukhammadali and the Smooth Array
data structures dp
1600
2167-F Tree, TREE!!!
dfs and similar dp math +1
1600
2167-E khba Loves to Sleep!
binary search data structures geometry +2
1600
2167-D Yet Another Array Problem
brute force implementation math +1
1000
2167-C Isamatdin and His Magic Wand!
constructive algorithms greedy implementation +1
800
2167-B Your Name
sortings strings
800
2167-A Square?
math sortings
800
2166-B Tab Closing
math
900
2166-A Same Difference
brute force greedy strings
800
2165-F Arctic Acquisition
data structures greedy
3500
2165-E Rainbow Branch
constructive algorithms dp greedy +1
3200
2165-D Path Split
graph matchings greedy
2500
2165-C Binary Wine
bitmasks greedy math
2000
2165-B Marble Council
dp math sortings
1900
2165-A Cyclic Merging
constructive algorithms greedy
1300
2164-H PalindromePalindrome
data structures strings
3400
2164-G Pointless Machine
constructive algorithms graphs interactive +1
3300
2164-F2 Chain Prefix Rank (Hard Version)
binary search combinatorics data structures +5
2900
2164-F1 Chain Prefix Rank (Easy Version)
combinatorics dfs and similar dp +2
2600
2164-E Journey
data structures dfs and similar dsu +2
2300
2164-D Copy String
greedy implementation strings +1
1800
2164-C Dungeon
binary search brute force data structures +2
1400
2164-B Even Modulo Pair
brute force math number theory
1000
2164-A Sequence Game
brute force sortings
800
2163-E Plegma
bitmasks combinatorics communication +1
2700
2163-D2 Diadrash (Hard Version)
binary search interactive math +1
2500
2163-D1 Diadrash (Easy Version)
binary search brute force divide and conquer +2
2100
2163-C Monopati
brute force combinatorics dp +2
1500
2163-B Siga ta Kymata
constructive algorithms greedy implementation +1
1700
2163-A Souvlaki VS. Kalamaki
brute force greedy math +1
800
2162-H Beautiful Problem
dp
2900
2162-G Beautiful Tree
constructive algorithms math probabilities +1
2200
2162-F Beautiful Intervals
constructive algorithms greedy
2100
2162-E Beautiful Palindromes
constructive algorithms greedy schedules
1600
2162-D Beautiful Permutation
binary search interactive
1400
2162-C Beautiful XOR
bitmasks constructive algorithms greedy
1100
2162-B Beautiful String
brute force constructive algorithms
1000
2162-A Beautiful Average
brute force greedy
800
2161-H Cycle Sort
data structures
3500
2161-G Bitwise And Equals
bitmasks greedy
3500
2161-F SubMST
combinatorics graphs trees
3000
2161-E Left is Always Right
combinatorics implementation math
2400
2161-D Locked Out
binary search data structures dp +1
2100
2161-C Loyalty
constructive algorithms greedy sortings +1
1200
2161-B Make Connected
brute force implementation
1700
2161-A Round Trip
games greedy implementation +1
800
2160-C Reverse XOR
bitmasks
1300