Tape Programming

data structures, implementation

Cyclical Quest

data structures, string suffix structures, strings

Fence

binary search, data structures, string suffix structures

Noble Knight's Path

data structures, trees

Alien DNA

data structures, dsu, trees

Two Permutations

data structures, hashing, strings

Game with Two Trees

data structures

Little Elephant and Strings

data structures, implementation, string suffix structures, two pointers

The Next Good String

data structures, greedy, hashing, strings

Two Segments

data structures

Heaven Tour

data structures, greedy

BRT Contract

data structures

Soap Time! - 2

binary search, data structures

Archaeology

data structures, dfs and similar, trees

Gnomes of Might and Magic

data structures, graphs, implementation, shortest paths

Wizards and Roads

data structures, divide and conquer, graph matchings, graphs, greedy

e-Government

data structures, dfs and similar, dp, strings, trees

Freezing with Style

binary search, data structures, divide and conquer, trees

Lucky Pair

combinatorics, data structures, implementation

Tree or not Tree

data structures, divide and conquer, implementation, trees

Professor's task

data structures, geometry

Tricky and Clever Password

binary search, constructive algorithms, data structures, greedy, hashing, strings

Points

data structures

Holes

data structures, dsu