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# Problem Tags Rating Solved
1684-D Traps
constructive algorithms greedy sortings
1700
1684-C Column Swapping
brute force constructive algorithms greedy +2
1400
1684-B Z mod X = C
constructive algorithms math
800
1684-A Digit Minimization
constructive algorithms games math +1
800
1682-F MCMF?
data structures flows graphs +3
2700
1682-E Unordered Swaps
constructive algorithms dfs and similar graphs +4
2700
1682-D Circular Spanning Tree
constructive algorithms implementation trees
2000
1682-C LIS or Reverse LIS?
constructive algorithms greedy implementation +1
1400
1682-B AND Sorting
bitmasks constructive algorithms sortings
1100
1682-A Palindromic Indices
greedy strings
800
1681-F Unique Occurrences
data structures dfs and similar divide and conquer +3
2300
1681-E Labyrinth Adventures
data structures dp matrices +1
2600
1681-D Required Length
brute force dfs and similar dp +2
1700
1681-C Double Sort
implementation sortings
1200
1681-B Card Trick
implementation math
800
1681-A Game with Cards
games greedy
800
1680-F Lenient Vertex Cover
dfs and similar divide and conquer dsu +2
2600
1680-E Moving Chips
bitmasks dp greedy
2000
1680-D Dog Walking
brute force greedy math
2400
1680-C Binary String
binary search greedy strings +1
1600
1680-B Robots
implementation
800
1680-A Minimums and Maximums
brute force math
800
1679-F Formalism for Formalism
bitmasks dp math
2600
1679-E Typical Party in Dorm
bitmasks combinatorics dp +1
2400
1679-D Toss a Coin to Your Graph...
binary search dfs and similar dp +1
1900
1679-C Rooks Defenders
data structures implementation
1400
1679-B Stone Age Problem
data structures implementation
1200
1679-A AvtoBus
brute force greedy math +1
900
1678-B2 Tokitsukaze and Good 01-String (hard version)
dp greedy implementation
1800
1678-B1 Tokitsukaze and Good 01-String (easy version)
implementation
800
1678-A Tokitsukaze and All Zero Sequence
implementation
800
1677-F Tokitsukaze and Gems
dp math
3500
1677-E Tokitsukaze and Beautiful Subsegments
data structures
2900
1677-D Tokitsukaze and Permutations
dp math
2500
1677-C Tokitsukaze and Two Colorful Tapes
constructive algorithms dfs and similar graphs +1
1900
1677-B Tokitsukaze and Meeting
data structures implementation math
1700
1677-A Tokitsukaze and Strange Inequality
brute force data structures dp
1600
1676-H2 Maximum Crossings (Hard Version)
data structures divide and conquer sortings
1500
1676-H1 Maximum Crossings (Easy Version)
brute force
1400
1676-G White-Black Balanced Subtrees
dfs and similar dp graphs +1
1300
1676-F Longest Strike
data structures greedy implementation +2
1300
1676-E Eating Queries
binary search greedy sortings
1100
1676-D X-Sum
brute force greedy implementation
1000
1676-C Most Similar Words
brute force greedy implementation +2
800
1676-B Equal Candies
greedy math sortings
800
1676-A Lucky?
implementation
800
1675-G Sorting Pancakes
dp
2300
1675-F Vlad and Unfinished Business
dfs and similar dp greedy +1
1800
1675-E Replace With the Previous, Minimize
dsu greedy strings
1500
1675-D Vertical Paths
graphs implementation trees
1300