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

Sonya and Problem Wihtout a Legend

dp, sortings

Discrete Centrifugal Jumps

data structures, dp, graphs

Ciel and Gondolas

data structures, divide and conquer, dp

The Bakery

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

A Simple Task

bitmasks, dp, graphs

Sequence

dp, sortings

Jzzhu and Numbers

bitmasks, combinatorics, dp

LCIS

dp

Cleaning

data structures, dp, greedy, math

The Fair Nut and Rectangles

data structures, dp, geometry

0-1-Tree

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

Beautiful numbers

dp, number theory

Sum of Paths

combinatorics, dp, math

Team Building

bitmasks, dp, greedy, sortings

Yet Another Minimization Problem

divide and conquer, dp

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

Cats Transport

data structures, 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

Rectangle Painting 1

dp

Decreasing Heights

brute force, dp

Almost Triple Deletions

data structures, dp, greedy

Centroids

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

Blood Cousins Return

binary search, data structures, dfs and similar, dp, sortings

Marbles

bitmasks, dp

Antimatter

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

Vowels

combinatorics, divide and conquer, dp

Keyboard Purchase

bitmasks, dp

Trees and Segments

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

Mike and Foam

bitmasks, combinatorics, dp, math, number theory

Team Work

combinatorics, dp, math

Sum of Digits

brute force, constructive algorithms, dp, greedy

Winter is here

combinatorics, dp, math, number theory

Kingdom and its Cities

dfs and similar, divide and conquer, dp, graphs, sortings, trees

Complete the Projects (hard version)

dp, greedy

Group Projects

dp

Anton and School - 2

combinatorics, dp, math, number theory

Gold Transfer

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

Antenna Coverage

data structures, dp, greedy, sortings

Trains and Statistic

data structures, dp, greedy

Thief in a Shop

divide and conquer, dp, fft, math

Erase Subsequences

dp, strings

Makoto and a Blackboard

dp, math, number theory, probabilities

Tourism

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

Road Improvement

dp, trees

Priority Queue

combinatorics, dp, implementation, math, ternary search

Another Filling the Grid

combinatorics, dp, math

Product Oriented Recurrence

dp, math, matrices, number theory

Escape Through Leaf

data structures, dp, geometry

Equilibrium

data structures, dp, greedy

Tree Array

brute force, combinatorics, dp, graphs, math, probabilities, trees

Sum Over Zero

data structures, dfs and similar, dp

Ezzat and Grid

data structures, dp, greedy

Karen and Supermarket

brute force, dp, trees

Koa and the Beach (Hard Version)

constructive algorithms, dp, greedy, implementation

Anthem of Berland

dp, strings

Kindergarten

data structures, dp, greedy

Segment Sum

bitmasks, combinatorics, dp, math

Monster Invaders

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

Asterism (Hard Version)

binary search, combinatorics, dp, math, number theory, sortings

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

Product Sum

data structures, dp, geometry

Mocha and Stars

combinatorics, dp, fft, math, number theory

Another MEX Problem

bitmasks, brute force, dp, shortest paths

Make It One

bitmasks, combinatorics, dp, math, number theory, shortest paths

Divan and Kostomuksha (hard version)

dp, number theory

Fruit Sequences

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

Vasya and Binary String

dp

Girl Permutation

combinatorics, dp, math, number theory

Bear and Tower of Cubes

binary search, dp, greedy

Bits And Pieces

bitmasks, dfs and similar, dp, greedy

Voting (Easy Version)

data structures, dp, greedy

Match & Catch

dp, string suffix structures, strings

Maximum Weight Subset

dp, trees

Partition Game

binary search, data structures, divide and conquer, dp

Tree Queries (Easy Version)

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

Love-Hate

bitmasks, brute force, dp, probabilities

Combinatorics Problem

brute force, combinatorics, dp