Clubstep

binary search, brute force, data structures, greedy, trees

Optimal Encoding

brute force, data structures

Ela Takes Dancing Class

binary search, data structures

Two Sequences

data structures, hashing, string suffix structures

Cut the pie

binary search, data structures, geometry

Copium Permutation

constructive algorithms, data structures, greedy

Arranging Crystal Balls

data structures, divide and conquer, divide and conquer, dp, geometry, graphs, number theory

Two Avenues

data structures, dfs and similar, graphs

AquaMoon and Potatoes

brute force, data structures, dp

Panda Meetups

data structures, dp, flows

Palindromic Magic

data structures, hashing, strings

Olympiad Training

binary search, data structures, dp, flows, geometry, implementation, sortings

Spaceship Crisis Management

binary search, data structures, geometry, sortings

AquaMoon and Time Stop (hard version)

data structures, dp

Standard Graph Problem

data structures, graphs, greedy, trees

AquaMoon and Time Stop (easy version)

data structures, dp

Ruler Of The Zoo

brute force, data structures

BinaryStringForces

constructive algorithms, data structures, dp

Doremy's Average Tree

data structures, dp, greedy, trees

LIS?

data structures, greedy, implementation

Crossing the Railways

data structures, dp

Parallel Swaps Sort

constructive algorithms, data structures

Farmer John's Favorite Intern

data structures, dp, flows, trees