Bear and Tower of Cubes

binary search, dp, greedy

Girl Permutation

combinatorics, dp, math, number theory

Mocha and Stars

combinatorics, dp, fft, math, number theory

Count Seconds

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

Not Escaping

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

Bananas in a Microwave

dfs and similar, dp, graphs, implementation

New Year and Arbitrary Arrangement

dp, math, probabilities

Find a Number

dp, graphs, number theory, shortest paths

Minimal Coverage

dp

Power Board

brute force, dp, math, number theory

And Reachability

bitmasks, dp

Super M

dfs and similar, dp, graphs, trees

Yet Another Substring Reverse

bitmasks, dp

Koa and the Beach (Hard Version)

constructive algorithms, dp, greedy, implementation

Ezzat and Grid

data structures, dp, greedy

Sum Over Zero

data structures, dfs and similar, dp

Equilibrium

data structures, dp, greedy

Priority Queue

combinatorics, dp, implementation, math, ternary search

Tourism

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

Makoto and a Blackboard

dp, math, number theory, probabilities

Erase Subsequences

dp, strings

Antenna Coverage

data structures, dp, greedy, sortings

Gold Transfer

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

Winter is here

combinatorics, dp, math, number theory

Sum of Digits

brute force, constructive algorithms, dp, greedy

Trees and Segments

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

Keyboard Purchase

bitmasks, dp

Jon and Orbs

dp, math, probabilities

Telepanting

binary search, data structures, dp, sortings

Balanced String

dp

Paired Payment

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

Paint the Middle

dp, greedy, sortings, two pointers

Marbles

bitmasks, dp

Decreasing Heights

brute force, dp

Travelling Salesman Problem

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

Minimal Segment Cover

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

Jongmah

dp

Make It Increasing

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

Kaavi and Magic Spell

dp, strings

Earn or Unlock

bitmasks, brute force, dp

Phoenix and Computers

combinatorics, dp, math

Sum of Paths

combinatorics, dp, math

0-1-Tree

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

Cleaning

data structures, dp, greedy, math

Sequence

dp, sortings

A Simple Task

bitmasks, dp, graphs

The Bakery

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

Discrete Centrifugal Jumps

data structures, dp, graphs

Clear the Multiset

data structures, divide and conquer, dp, greedy

Magic Numbers

dp

Gerald and Giant Chess

combinatorics, dp, math, number theory

Compatible Numbers

bitmasks, brute force, dfs and similar, dp

Number Deletion Game

*special problem, dp, games, greedy

Maximum Sum Subarrays

*special problem, dp

Smart Boy

dp, games, strings

Cowboys

combinatorics, dp, math

Game with Points

dp, graphs, implementation, shortest paths

Dormitory

dp, implementation

Xenia and Dominoes

bitmasks, dfs and similar, dp

The Wall (hard)

dp

Context Advertising

dp, two pointers

Writing a Song

brute force, dp, strings

Periodical Numbers

combinatorics, dp, number theory

Ivan the Fool VS Gorynych the Dragon

dp, games, graphs

Moon Craters

dp, sortings

Send the Fool Further! (medium)

dp, trees

Bombing

binary search, dp, probabilities

Constants in the language of Shakespeare

constructive algorithms, dp, greedy

Count BFS Graph

combinatorics, dp

Graph

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

Quest

dp, greedy

Casinos and travel

dp

Third Month Insanity

dp, probabilities, trees

Runner's Problem

dp, matrices, sortings

Beavermuncher-0xFF

dfs and similar, dp, dsu, greedy, trees

Bulbo

dp, greedy

World Eater Brothers

dfs and similar, dp, greedy, trees

Maximum Questions

data structures, dp, strings

Optimal Polygon Perimeter

dp, geometry

Mysterious Code

dp, strings

Coin Troubles

dp

Petya and Spiders

bitmasks, dp, dsu

Longest Array Deconstruction

data structures, divide and conquer, dp, sortings

Job Lookup

constructive algorithms, dp, shortest paths, trees

Village (Minimum)

*special problem, dp, greedy, trees

Duff in Beach

dp

Yet Another Number Game

dp, games

Vanya and Brackets

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

Okabe and El Psy Kongroo

dp, matrices

Ilya and Roads

dp

The Unbearable Lightness of Weights

dp, math

Devu and Birthday Celebration

combinatorics, dp, math

Grouped Carriages

binary search, data structures, dp, flows, greedy

Changing a String

dp

Cactus

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

Presents in Bankopolis

dp, graphs, shortest paths

Special Matrices

combinatorics, dp

Substitutes in Number

dp

Greg and Friends

combinatorics, dp, graphs, shortest paths

Light Bulbs (Easy Version)

brute force, combinatorics, dfs and similar, dp, dsu, graphs, math, trees