Presents in Bankopolis

dp, graphs, shortest paths

Cactus

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

Changing a String

dp

Grouped Carriages

binary search, data structures, dp, flows, greedy

Devu and Birthday Celebration

combinatorics, dp, math

The Unbearable Lightness of Weights

dp, math

Ilya and Roads

dp

Okabe and El Psy Kongroo

dp, matrices

Vanya and Brackets

brute force, dp, expression parsing, greedy, implementation, strings

Yet Another Number Game

dp, games

Duff in Beach

dp

Village (Minimum)

*special problem, dp, greedy, trees

Job Lookup

constructive algorithms, dp, shortest paths, trees

Longest Array Deconstruction

data structures, divide and conquer, dp, sortings

Petya and Spiders

bitmasks, dp, dsu

Coin Troubles

dp

Mysterious Code

dp, strings

Optimal Polygon Perimeter

dp, geometry

Maximum Questions

data structures, dp, strings

World Eater Brothers

dfs and similar, dp, greedy, trees

Bulbo

dp, greedy

Runner's Problem

dp, matrices, sortings

Beavermuncher-0xFF

dfs and similar, dp, dsu, greedy, trees

Third Month Insanity

dp, probabilities, trees

Casinos and travel

dp

Quest

dp, greedy

Graph

*special problem, binary search, dfs and similar, dp, math, ternary search

Count BFS Graph

combinatorics, dp

Constants in the language of Shakespeare

constructive algorithms, dp, greedy

Bombing

binary search, dp, probabilities

Send the Fool Further! (medium)

dp, trees

Moon Craters

dp, sortings

Ivan the Fool VS Gorynych the Dragon

dp, games, graphs

Periodical Numbers

combinatorics, dp, number theory

Writing a Song

brute force, dp, strings

Context Advertising

dp, two pointers

The Wall (hard)

dp

Xenia and Dominoes

bitmasks, dfs and similar, dp

Dormitory

dp, implementation

Game with Points

dp, graphs, implementation, shortest paths

Cowboys

combinatorics, dp, math

Smart Boy

dp, games, strings

Maximum Sum Subarrays

*special problem, dp

Number Deletion Game

*special problem, dp, games, greedy

Compatible Numbers

bitmasks, brute force, dfs and similar, dp

Gerald and Giant Chess

combinatorics, dp, math, number theory

Magic Numbers

dp

Clear the Multiset

data structures, divide and conquer, dp, greedy

Discrete Centrifugal Jumps

data structures, dp, graphs

The Bakery

binary search, data structures, divide and conquer, dp, two pointers

A Simple Task

bitmasks, dp, graphs

Sequence

dp, sortings

Cleaning

data structures, dp, greedy, math

0-1-Tree

dfs and similar, divide and conquer, dp, dsu, trees

Sum of Paths

combinatorics, dp, math

Phoenix and Computers

combinatorics, dp, math

Earn or Unlock

bitmasks, brute force, dp

Kaavi and Magic Spell

dp, strings

Make It Increasing

binary search, constructive algorithms, data structures, dp, implementation

Jongmah

dp

Minimal Segment Cover

data structures, dfs and similar, divide and conquer, dp, greedy, implementation, trees

Travelling Salesman Problem

binary search, data structures, dp, greedy, shortest paths, sortings, two pointers

Decreasing Heights

brute force, dp

Marbles

bitmasks, dp

Paint the Middle

dp, greedy, sortings, two pointers

Paired Payment

binary search, brute force, constructive algorithms, dp, flows, graphs, shortest paths

Balanced String

dp

Telepanting

binary search, data structures, dp, sortings

Jon and Orbs

dp, math, probabilities

Keyboard Purchase

bitmasks, dp

Trees and Segments

brute force, data structures, dp, greedy, two pointers

Sum of Digits

brute force, constructive algorithms, dp, greedy

Winter is here

combinatorics, dp, math, number theory

Gold Transfer

binary search, data structures, dp, greedy, interactive, trees

Antenna Coverage

data structures, dp, greedy, sortings

Erase Subsequences

dp, strings

Makoto and a Blackboard

dp, math, number theory, probabilities

Tourism

dfs and similar, dp, dsu, graphs, greedy, trees

Priority Queue

combinatorics, dp, implementation, math, ternary search

Equilibrium

data structures, dp, greedy

Sum Over Zero

data structures, dfs and similar, dp

Ezzat and Grid

data structures, dp, greedy

Koa and the Beach (Hard Version)

constructive algorithms, dp, greedy, implementation

Yet Another Substring Reverse

bitmasks, dp

Super M

dfs and similar, dp, graphs, trees

And Reachability

bitmasks, dp

Power Board

brute force, dp, math, number theory

Minimal Coverage

dp

Find a Number

dp, graphs, number theory, shortest paths

Bananas in a Microwave

dfs and similar, dp, graphs, implementation

New Year and Arbitrary Arrangement

dp, math, probabilities

Not Escaping

data structures, dp, implementation, shortest paths, two pointers

Count Seconds

brute force, constructive algorithms, dp, graphs, implementation, math

Mocha and Stars

combinatorics, dp, fft, math, number theory

Girl Permutation

combinatorics, dp, math, number theory

Bear and Tower of Cubes

binary search, dp, greedy

Match & Catch

dp, string suffix structures, strings

Maximum Weight Subset

dp, trees

Tree Queries (Easy Version)

brute force, constructive algorithms, dfs and similar, dp, greedy, trees

LIS of Sequence

data structures, dp, greedy, hashing, math