Railway Construction

brute force, constructive algorithms, data structures, graphs, shortest paths

Gnomes of Might and Magic

data structures, graphs, implementation, shortest paths

Собери число

graphs, shortest paths

Alpha planetary system

constructive algorithms, graphs, shortest paths

Viruses

*special problem, dp, shortest paths, string suffix structures

Knightmare (easy)

graphs, interactive, shortest paths

Show Must Go On

binary search, brute force, greedy, shortest paths

Late For Work (submissions are not allowed)

data structures, greedy, schedules, shortest paths

Knightmare (hard)

graphs, interactive, shortest paths

Princess and Her Shadow

constructive algorithms, shortest paths

Trains and Airplanes

dfs and similar, graphs, shortest paths, trees

The Doctor Meets Vader (Hard)

flows, shortest paths

Infinite Chess

implementation, shortest paths

Iqea

data structures, dfs and similar, divide and conquer, dsu, shortest paths, trees

Chess

math, shortest paths

Ship's Shortest Path

geometry, shortest paths

Battlefield

geometry, graphs, implementation, shortest paths

Doe Graphs

constructive algorithms, divide and conquer, dp, graphs, shortest paths

Winning Strategy

binary search, graphs, math, shortest paths

The Game of the Century

constructive algorithms, graphs, shortest paths

Reindeer Games

binary search, constructive algorithms, data structures, divide and conquer, flows, graphs, shortest paths

A Game With Numbers

games, graphs, shortest paths

Anti-Tetris

constructive algorithms, graphs, shortest paths

Four Vertices

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

Monsters and Diamonds

dfs and similar, graphs, shortest paths

Meeting Her

dp, graphs, shortest paths

Snowy Mountain

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

Shortest path

brute force, geometry, math, shortest paths

Ones

dp, greedy, shortest paths

Appleman and a Game

binary search, shortest paths, strings

Teleportation in Byteland

data structures, dfs and similar, divide and conquer, graphs, shortest paths, trees

Dirty Arkady's Kitchen

data structures, dp, graphs, shortest paths

Track

graphs, greedy, shortest paths

Game with Points

dp, graphs, implementation, shortest paths

Down Below

binary search, dfs and similar, graphs, greedy, meet-in-the-middle, shortest paths

Omkar and Pies

bitmasks, dfs and similar, dp, math, shortest paths

Long Way to be Non-decreasing

binary search, dfs and similar, graphs, implementation, shortest paths, two pointers

Double Tree

data structures, divide and conquer, shortest paths, trees

Circling Round Treasures

bitmasks, shortest paths

Fetch the Treasure

brute force, data structures, graphs, shortest paths

Cow and Exercise

flows, graphs, shortest paths

Rats

brute force, dfs and similar, graphs, implementation, shortest paths

Timofey and a flat tree

data structures, graphs, hashing, shortest paths, trees

Evacuation

flows, graphs, shortest paths

Not Splitting

geometry, graphs, greedy, implementation, shortest paths

Oppa Funcan Style Remastered

graphs, math, number theory, shortest paths

Perishable Roads

dp, graphs, shortest paths

The Doctor Meets Vader (Medium)

flows, graph matchings, graphs, shortest paths, sortings

Armor and Weapons

brute force, dp, greedy, shortest paths

Trial for Chief

graphs, greedy, shortest paths

Italian Data Centers

graphs, shortest paths

Jumping Around

binary search, data structures, divide and conquer, dp, dsu, graphs, shortest paths

An unavoidable detour for home

combinatorics, dp, graphs, shortest paths

Treeland and Viruses

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

Levko and Game

graphs, greedy, shortest paths

Robot Control

dp, graphs, shortest paths

Labyrinth Adventures

data structures, dp, matrices, shortest paths

BerDonalds

graphs, math, shortest paths

Vova Escapes the Matrix

brute force, dfs and similar, divide and conquer, shortest paths

Logical Expression

bitmasks, dp, shortest paths

Dynamic Shortest Path

graphs, shortest paths

Petya and Pipes

flows, graphs, shortest paths

Serious Business

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

Elevator

dp, graphs, shortest paths

Playing on Graph

graphs, shortest paths

PolandBall and White-Red graph

constructive algorithms, graphs, shortest paths

Indecisive Taxi Fee

data structures, graphs, shortest paths

Opening Portals

dsu, graphs, shortest paths

Christmas Chocolates

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

Approximate Diameter

binary search, divide and conquer, graphs, shortest paths

Quarrel

graphs, shortest paths

Run for beer

dfs and similar, shortest paths

Take-off Ramps

graphs, shortest paths

Smooth Sailing (Easy Version)

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

Moving Platforms

graphs, math, number theory, shortest paths

Daleks' Invasion (medium)

dfs and similar, graphs, shortest paths, trees

Distance Tree (hard version)

binary search, dfs and similar, shortest paths, trees

Password

bitmasks, dp, shortest paths

Exploration plan

binary search, flows, graph matchings, shortest paths

Antennas

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

Flights

graphs, shortest paths

Sonya and Ice Cream

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

Capitalism

constructive algorithms, dfs and similar, graphs, shortest paths

The Most Reckless Defense

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

Tokens on Graph

constructive algorithms, dfs and similar, graphs, shortest paths

Team Rocket Rises Again

data structures, graphs, shortest paths

Jellyfish and Math

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

Super Jaber

dfs and similar, graphs, implementation, shortest paths

Valera and Fools

dfs and similar, dp, graphs, shortest paths

Koala and Notebook

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

Hyakugoku and Ladders

dp, probabilities, shortest paths

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

Knights

geometry, graphs, shortest paths, sortings

Connectivity Addicts

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

BFS Trees

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

The Hidden Pair (Hard Version)

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

Tenzing and Tree

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

Dima and Trap Graph

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

Three Pieces

dfs and similar, dp, shortest paths