Moving Both Hands

dp, graphs, shortest paths

Innokenty and a Football League

2-sat, graphs, greedy, implementation, shortest paths, strings

Dima and Bacteria

dsu, graphs, shortest paths

Paired Payment

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

Time Travel

binary search, graphs, shortest paths

The Shortest Statement

graphs, shortest paths, trees

Volleyball

shortest paths

Three States

dfs and similar, graphs, shortest paths

Complete The Graph

binary search, constructive algorithms, graphs, shortest paths

Multihedgehog

dfs and similar, graphs, shortest paths

Breaking Good

dfs and similar, dp, graphs, shortest paths

Returning Home

graphs, shortest paths, sortings

Text Editor

data structures, dfs and similar, graphs, greedy, shortest paths

Keshi in Search of AmShZ

graphs, greedy, shortest paths

K-th Path

brute force, constructive algorithms, shortest paths, sortings

Omkar and Forest

combinatorics, graphs, math, shortest paths

Counting Shortcuts

data structures, dfs and similar, dp, graphs, shortest paths

Find a Number

dp, graphs, number theory, shortest paths

Not Escaping

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

Another MEX Problem

bitmasks, brute force, dp, shortest paths

Turtle Mission: Robot and the Earthquake

dfs and similar, dp, graphs, shortest paths

Make It One

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

Yaroslav and Time

binary search, graphs, shortest paths

Cycle In Maze

*special problem, dfs and similar, graphs, greedy, shortest paths

World Tour

graphs, shortest paths

The way home

binary search, data structures, dp, graphs, greedy, shortest paths, sortings

Nastya and Unexpected Guest

dfs and similar, dp, graphs, shortest paths

The Great Mixing

dfs and similar, graphs, shortest paths

Fishes

data structures, graphs, greedy, probabilities, shortest paths

AlgoRace

dp, shortest paths

Lost Array

graphs, greedy, interactive, shortest paths

Ehab's REAL Number Theory Problem

brute force, dfs and similar, graphs, number theory, shortest paths

Theseus and labyrinth

graphs, implementation, shortest paths

Ela and the Wiring Wizard

brute force, dp, graphs, greedy, implementation, shortest paths

Police Station

dp, graphs, shortest paths

Cakewalk

*special problem, greedy, implementation, shortest paths

The Beach

constructive algorithms, dfs and similar, graphs, shortest paths

Greg and Friends

combinatorics, dp, graphs, shortest paths

President and Roads

dfs and similar, graphs, hashing, shortest paths

Arthur and Walls

constructive algorithms, data structures, graphs, greedy, shortest paths

Berland and the Shortest Paths

brute force, dfs and similar, graphs, shortest paths

Long Way Home

data structures, divide and conquer, dp, geometry, graphs, greedy, shortest paths

Cactus Wall

constructive algorithms, dfs and similar, graphs, shortest paths

Egor in the Republic of Dagestan

constructive algorithms, dfs and similar, dp, graphs, greedy, shortest paths

Cheap Robot

binary search, dsu, graphs, shortest paths, trees

Graph Transpositions

dfs and similar, graphs, greedy, shortest paths

Presents in Bankopolis

dp, graphs, shortest paths

Vanya and Treasure

data structures, dp, graphs, shortest paths

Culture Code

binary search, combinatorics, data structures, dp, shortest paths, sortings

Useful Edges

graphs, shortest paths

Arson In Berland Forest

binary search, graphs, graphs, shortest paths

Kirill and Company

bitmasks, brute force, dfs and similar, dp, flows, graphs, shortest paths

President's Path

dp, graphs, shortest paths

It's a bird! No, it's a plane! No, it's AaParsa!

constructive algorithms, graphs, shortest paths

The Hidden Pair (Easy Version)

binary search, dfs and similar, graphs, interactive, shortest paths, trees

Okabe and City

dfs and similar, graphs, shortest paths

Intergalaxy Trips

probabilities, shortest paths

Fast Travel Text Editor

data structures, dfs and similar, graphs, shortest paths

The Classic Problem

data structures, graphs, shortest paths

Job Lookup

constructive algorithms, dp, shortest paths, trees

Three Pieces

dfs and similar, dp, shortest paths

Dima and Trap Graph

binary search, data structures, dfs and similar, dsu, shortest paths, two pointers

Tenzing and Tree

dfs and similar, greedy, shortest paths, sortings, trees

The Hidden Pair (Hard Version)

binary search, dfs and similar, graphs, interactive, shortest paths, trees

BFS Trees

combinatorics, dfs and similar, graphs, math, shortest paths, trees

Connectivity Addicts

constructive algorithms, dsu, graphs, greedy, interactive, shortest paths, trees

Knights

geometry, graphs, shortest paths, sortings

Pokémon Arena

data structures, graphs, greedy, implementation, shortest paths, sortings

Distance Tree (easy version)

binary search, data structures, dfs and similar, graphs, shortest paths, trees

Hyakugoku and Ladders

dp, probabilities, shortest paths

Koala and Notebook

data structures, dfs and similar, graphs, shortest paths, strings, trees

Valera and Fools

dfs and similar, dp, graphs, shortest paths

Super Jaber

dfs and similar, graphs, implementation, shortest paths

Jellyfish and Math

bitmasks, brute force, dfs and similar, dp, graphs, shortest paths

Team Rocket Rises Again

data structures, graphs, shortest paths

Tokens on Graph

constructive algorithms, dfs and similar, graphs, shortest paths

The Most Reckless Defense

bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths

Capitalism

constructive algorithms, dfs and similar, graphs, shortest paths

Sonya and Ice Cream

binary search, data structures, dp, greedy, shortest paths, trees

Flights

graphs, shortest paths

Antennas

data structures, dfs and similar, graphs, graphs, implementation, implementation, shortest paths, shortest paths

Exploration plan

binary search, flows, graph matchings, shortest paths

Password

bitmasks, dp, shortest paths

Distance Tree (hard version)

binary search, dfs and similar, shortest paths, trees

Daleks' Invasion (medium)

dfs and similar, graphs, shortest paths, trees

Moving Platforms

graphs, math, number theory, shortest paths

Smooth Sailing (Easy Version)

binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths

Run for beer

dfs and similar, shortest paths

Take-off Ramps

graphs, shortest paths

Quarrel

graphs, shortest paths

Approximate Diameter

binary search, divide and conquer, graphs, shortest paths

Christmas Chocolates

dfs and similar, dp, games, graphs, implementation, math, number theory, shortest paths, trees

Opening Portals

dsu, graphs, shortest paths

Indecisive Taxi Fee

data structures, graphs, shortest paths

PolandBall and White-Red graph

constructive algorithms, graphs, shortest paths

Playing on Graph

graphs, shortest paths

Elevator

dp, graphs, shortest paths

Serious Business

data structures, divide and conquer, dp, implementation, shortest paths

Petya and Pipes

flows, graphs, shortest paths

Dynamic Shortest Path

graphs, shortest paths