Underground Lab

constructive algorithms, dfs and similar, graphs

Weird journey

combinatorics, constructive algorithms, dfs and similar, dsu, graphs

Analysis of Pathes in Functional Graph

data structures, graphs

Leha and another game about graph

constructive algorithms, data structures, dfs and similar, dp, graphs

Turtle Mission: Robot and the Earthquake

dfs and similar, dp, graphs, shortest paths

Ralph and Mushrooms

dp, graphs

Autosynthesis

constructive algorithms, dfs and similar, graphs, greedy, sortings

Yaroslav and Time

binary search, graphs, shortest paths

Information Graph

dfs and similar, dsu, graphs, trees

The way home

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

Fishes

data structures, graphs, greedy, probabilities, shortest paths

National Property

2-sat, dfs and similar, graphs, implementation

Transitive Graph

dfs and similar, dp, dsu, graphs, implementation

Dispute

dfs and similar, graphs, greedy

Is It Flower?

dfs and similar, graphs, implementation

Permutation recovery

constructive algorithms, data structures, dfs and similar, graphs, greedy, math, sortings

Light Bulbs (Easy Version)

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

Greg and Friends

combinatorics, dp, graphs, shortest paths

Desk Disorder

combinatorics, dfs and similar, dsu, graphs, trees

Flawed Flow

constructive algorithms, flows, graphs, greedy

Berland and the Shortest Paths

brute force, dfs and similar, graphs, shortest paths

Presents in Bankopolis

dp, graphs, shortest paths

Little Girl and Problem on Trees

data structures, graphs, trees

Cactus

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

Vladik and Favorite Game

constructive algorithms, dfs and similar, graphs, interactive

Counter Attack

data structures, dsu, graphs, hashing, sortings

New Roads

constructive algorithms, graphs, trees

Black and White Tree

constructive algorithms, dsu, graphs, greedy, trees

Valera and Swaps

constructive algorithms, dsu, graphs, implementation, math, string suffix structures

Chessboard Billiard

dfs and similar, dsu, graphs, number theory

Daleks' Invasion (medium)

dfs and similar, graphs, shortest paths, trees

Fools and Foolproof Roads

data structures, dfs and similar, dsu, graphs, greedy

Ivan the Fool VS Gorynych the Dragon

dp, games, graphs

Game with Points

dp, graphs, implementation, shortest paths

Road Problem

graphs

Tree Requests

binary search, bitmasks, constructive algorithms, dfs and similar, graphs, trees

Multiples and Power Differences

constructive algorithms, graphs, math, number theory

Discrete Centrifugal Jumps

data structures, dp, graphs

A Simple Task

bitmasks, dp, graphs

Strange Housing

constructive algorithms, dfs and similar, graph matchings, graphs, greedy

To Go Or Not To Go?

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

Almost Acyclic Graph

dfs and similar, graphs

Infinite Path

brute force, dfs and similar, graphs, math, number theory

Paired Payment

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

Trips

graphs

Divisor Paths

combinatorics, graphs, greedy, math, number theory

Three States

dfs and similar, graphs, shortest paths

Tourism

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

Ring Road 2

2-sat, dfs and similar, dsu, graphs

Figure Fixing

constructive algorithms, dfs and similar, dsu, graphs, greedy, math

Super M

dfs and similar, dp, graphs, trees

Delivery Bears

binary search, flows, graphs

Andrew and Taxi

binary search, dfs and similar, graphs

Find a Number

dp, graphs, number theory, shortest paths

Bananas in a Microwave

dfs and similar, dp, graphs, implementation

Count Seconds

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

Cars

2-sat, constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings

Moment of Bloom

constructive algorithms, dfs and similar, graph matchings, graphs, greedy, trees

Strictly Positive Matrix

graphs, math

Water Level

brute force, graphs, greedy, implementation, math

Robots on a Grid

data structures, dfs and similar, dsu, graphs, greedy, matrices

Table Compression

dfs and similar, dp, dsu, graphs, greedy

One-Way Reform

constructive algorithms, dfs and similar, flows, graphs, greedy

Between

constructive algorithms, dfs and similar, graphs, greedy

X(or)-mas Tree

bitmasks, dfs and similar, dsu, graphs, trees

Two Houses

brute force, graphs, greedy, interactive, sortings

Ela and the Wiring Wizard

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

Lights

brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation

Love Triangles

dfs and similar, dsu, graphs

Railguns

brute force, dfs and similar, dp, graphs

Node Pairs

dp, graphs, math, number theory

Edge Reverse

binary search, dfs and similar, graphs, trees

The Maximum Subtree

dfs and similar, dp, graphs, trees

President and Roads

dfs and similar, graphs, hashing, shortest paths

Square Root of Permutation

combinatorics, constructive algorithms, dfs and similar, graphs, math

Little Pony and Summer Sun Celebration

constructive algorithms, dfs and similar, graphs

AND-MEX Walk

bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs

Gift

dsu, graphs, sortings, trees

Graph Coloring

dfs and similar, graphs

Arson In Berland Forest

binary search, graphs, graphs, shortest paths

Kirill and Company

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

Compressed Tree

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

Okabe and City

dfs and similar, graphs, shortest paths

Network Safety

dfs and similar, dsu, graphs, math, sortings

Hospital Queue

binary search, graphs, greedy, implementation

Dima and Horses

combinatorics, constructive algorithms, graphs

Valera and Fools

dfs and similar, dp, graphs, shortest paths

Drivers Dissatisfaction

data structures, dsu, graphs, trees

Bribes

dfs and similar, graphs, trees

Lovely Matrix

dfs and similar, graphs, greedy, sortings

Snake

bitmasks, dfs and similar, graphs, implementation

Wrong Floyd

brute force, constructive algorithms, dfs and similar, graphs

Ksenia and Pawns

dfs and similar, graphs, implementation, trees

Maximum Control (medium)

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

FreeDiv

dfs and similar, graphs, greedy

The Doctor Meets Vader (Medium)

flows, graph matchings, graphs, shortest paths, sortings

Ancient Language

graphs, sortings

Swaps

constructive algorithms, graphs, greedy

Suggested Friends

brute force, graphs

Leaders

dfs and similar, dsu, graphs, trees