Money Buys Happiness

dp

Trails (Easy)

dp

Game on Tree (Medium)

dfs and similar, dp, games, trees

Minimizing the Sum

dp, implementation

How Does the Rook Move?

combinatorics, dp, math

Unfair Game

dp, games, greedy, math, schedules

Colored Balls

combinatorics, dp, math, sortings

Arrow Path

brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths

Tree Cutting

binary search, dp, greedy, implementation, trees

Seraphim the Owl

dp, greedy

Rudolf and k Bridges

binary search, data structures, dp, two pointers

Rudolf and the Ball Game

dfs and similar, dp, implementation

Binary Path

dp, greedy, implementation

Messenger in MAC

binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings

Yet Another Coin Problem

brute force, dp, greedy, math

Sum over all Substrings (Easy Version)

brute force, dp, greedy, strings

Find the Different Ones!

binary search, brute force, data structures, dp, dsu, greedy, two pointers

Vlad and an Odd Ordering

binary search, bitmasks, data structures, dp, implementation, math, number theory

Vlad and a Sum of Sum of Digits

dp, implementation

Did We Get Everything Covered?

constructive algorithms, dp, greedy, shortest paths, strings

Grouping Increases

data structures, dp, greedy

Three Activities

brute force, dp, greedy, implementation, sortings

Kim's Quest

bitmasks, combinatorics, dp

Yet Another Monster Fight

binary search, dp, greedy, implementation, math

Anji's Binary Tree

dfs and similar, dp, trees

Torn Lucky Ticket

brute force, dp, hashing, implementation, math

Medium Design

brute force, data structures, dp, greedy, sortings

Minimum Maximum Distance

dfs and similar, dp, graphs, shortest paths, trees

Block Sequence

dp

Sum of XOR Functions

bitmasks, combinatorics, divide and conquer, dp, math

Make it Alternating

combinatorics, dp, greedy

Jellyfish and Mex

dp

Data Structures Fan

binary search, bitmasks, data structures, dp

Colorful Table

binary search, data structures, dp, implementation, math, two pointers

Matrix Cascade

brute force, constructive algorithms, data structures, dp, greedy, math

Magic Will Save the World

binary search, bitmasks, brute force, dp

Sorting By Multiplication

dp, greedy

Game on Permutation

data structures, dp, games, greedy

Andrey and Escape from Capygrad

binary search, data structures, dp, dsu, greedy, sortings

Another Permutation Problem

brute force, dp, greedy, math

The Walkway

brute force, dp, greedy, math, number theory

PermuTree (easy version)

dfs and similar, dp, trees

To Become Max

binary search, brute force, data structures, dp

Nastya and Potions

dfs and similar, dp, graphs, sortings

Vampiric Powers, anyone?

bitmasks, brute force, dp, greedy

Rudolf and the Another Competition

constructive algorithms, data structures, dp, greedy, sortings

Rating System

binary search, brute force, data structures, dp, dsu, greedy, math, two pointers

Strong Password

binary search, dp, greedy, strings

Particles

dp, greedy, implementation, math

Omsk Metro (simple version)

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

Apple Tree

combinatorics, dfs and similar, dp, math, trees

Tenzing and Balls

dp

Ranom Numbers

brute force, dp, greedy, math, strings

Ksyusha and Chinchilla

constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees

Copil Copac Draws Trees

dfs and similar, dp, graphs, trees

Don't Blame Me

bitmasks, combinatorics, dp, math

Hits Different

data structures, dp, implementation, math

Running Miles

brute force, dp, greedy

Gardening Friends

brute force, dfs and similar, dp, graphs, trees

Living Sequence

binary search, dp, math, number theory

A Wide, Wide Graph

dfs and similar, dp, graphs, greedy, trees

Moscow Gorillas

binary search, dp, greedy, implementation, math, two pointers

Serval and Toxel's Arrays

combinatorics, dp, implementation, math

Remove the Bracket

dp, greedy, math

Boris and His Amazing Haircut

constructive algorithms, data structures, dp, dsu, greedy, sortings

Ice and Fire

constructive algorithms, dp, greedy

Hossam and Friends

binary search, constructive algorithms, dp, two pointers

Игра в Девятку I

*special problem, brute force, dp

Подкрутка II

*special problem, dp

Подкрутка I

*special problem, brute force, dp, greedy

Playoff

combinatorics, constructive algorithms, dp, greedy, math

Hamiltonian Wall

dp, implementation

The Humanoid

brute force, dp, sortings

Make Nonzero Sum (hard version)

constructive algorithms, dp, greedy

Make Nonzero Sum (easy version)

constructive algorithms, dp, greedy

Zero-Sum Prefixes

brute force, data structures, dp, greedy, implementation

Problem with Random Tests

brute force, dp, greedy, probabilities

Sending a Sequence Over the Network

dp

Hanging Hearts

constructive algorithms, data structures, dfs and similar, dp, greedy, trees

Card Game

combinatorics, constructive algorithms, dp, games

Even Number Addicts

dp, games, greedy, math

Slime Escape

data structures, dp, greedy, two pointers

Valiant's New Map

binary search, brute force, data structures, dp, two pointers

Letter Picking

constructive algorithms, dp, games, two pointers

Moving Both Hands

dp, graphs, shortest paths

Counting Rectangles

brute force, data structures, dp, implementation

Xor-Subsequence (easy version)

bitmasks, brute force, dp, strings, trees, two pointers

Burenka and Traditions (easy version)

dp, greedy

Color with Occurrences

brute force, data structures, dp, greedy, strings

Build Permutation

constructive algorithms, dp, math

Qpwoeirut And The City

dp, flows, greedy, implementation

Good Key, Bad Key

bitmasks, brute force, dp, greedy, math

Yet Another Problem About Pairs Satisfying an Inequality

binary search, data structures, dp, greedy, sortings

Zero Path

brute force, data structures, dp, graphs, greedy, shortest paths

Fake Plastic Trees

dfs and similar, dp, greedy, trees

Gambling

data structures, dp, greedy, math

2^Sort

data structures, dp, sortings, two pointers

Infected Tree

dfs and similar, dp, trees

Required Length

brute force, dfs and similar, dp, hashing, shortest paths

Tokitsukaze and Good 01-String (hard version)

dp, greedy, implementation