Loader

*special problem, graphs

Different variables

*special problem

King's Path

*special problem, math, trees

A Battle Against a Dragon

*special problem, data structures, dp

Combostone

games, implementation

Emperor's Problem

geometry

Painting Numbers

*special problem, data structures, greedy, number theory

Tram

Goats and Wolves

greedy

Colored Jenga

dfs and similar, dp, probabilities

Clever Fat Rat

dp

Row of Models

greedy, sortings

Olympic Games

math

Poachers

dp, games, graphs, trees

Help Monks

constructive algorithms

Lift and Throw

brute force

Two Circles

brute force, data structures, implementation

HQ

*special problem, constructive algorithms

Berland.Taxi

data structures

Space mines

geometry

Special Graph

Summer Reading

dp, greedy

Deputies

constructive algorithms, graphs, greedy, implementation

Deck-Building Game

divide and conquer, math

Lucky Segments

binary search, implementation, two pointers

Little Elephant and Triangle

geometry, math

Interactive Bulls and Cows (Hard)

brute force, constructive algorithms, interactive

Madness

constructive algorithms, dfs and similar, trees

Cycle

brute force, dfs and similar, implementation

Shaass and Painter Robot

brute force, implementation, number theory

Help Greg the Dwarf

geometry, ternary search

Hyper String

dp

Save the City!

geometry

Last chance

data structures, flows, graph matchings, graphs, trees

Journey

dp, math

Not Quick Transformation

divide and conquer, math

Max and Min

geometry

Flags

dp, math, matrices

New Year Tree Decorations

geometry, schedules, sortings

Shoe Store

dp, graph matchings, greedy, sortings, two pointers

Packmen Strike Back

binary search, dp, math

SmartGarden

constructive algorithms, divide and conquer

Journey

dp, trees

Product Tuples

divide and conquer, fft

Shooting Gallery

data structures, implementation

Dish Shopping

data structures, divide and conquer

Digits

brute force, implementation, math

The Evil Temple and the Moving Rocks

constructive algorithms

Wilbur and Strings

dfs and similar, dp, graphs, strings

Game with Tokens

data structures, games, implementation

Rhombus

brute force, data structures, dp

Savior

brute force, dsu, math

Representative Sampling

Cactus Search

interactive

Colorful Stones

dp, two pointers

Dividing Kingdom

binary search, brute force, data structures

Azembler

brute force, implementation

Igor and Interesting Numbers

brute force, combinatorics, dp, math

Sereja and Cinema

combinatorics, math

Keen Tree Calculation

binary search, data structures, dp, geometry, graphs, implementation, trees

Horse Races

dp, math

One Node is Gone

constructive algorithms, implementation, trees

Guards In The Storehouse

bitmasks, dp

Strange Radiation

binary search, implementation, math

Electrical Efficiency

combinatorics, data structures, dp, math, number theory, trees

Palindromic Parentheses

constructive algorithms

Half-decay tree

data structures, divide and conquer, dp, math, probabilities

Cutting a Fence

binary search, data structures, dsu

A Story of One Country (Easy)

brute force, divide and conquer, sortings

Runaway to a Shadow

geometry, sortings

New Year and Cleaning

binary search, implementation

Interactive Factorial Guessing

brute force, games, implementation, interactive

Yaroslav and Algorithm

constructive algorithms

Garden

bitmasks, dp, graphs, trees

The Great Julya Calendar

dp

Polycarpus the Safecracker

brute force, dp

Write The Contest

binary search, dp, math

Gifts from Grandfather Ahmed

dp, math, number theory

Plane Tiling

geometry, implementation, math

World of Darkraft

dp, games

Tachibana Kanade's Tofu

dp

Rowena Ravenclaw's Diadem

trees

Max and Bike

binary search, geometry

Fetch the Treasure

brute force, data structures, graphs, shortest paths

String Transformation

hashing, strings

Candies and Stones

divide and conquer, dp

L BREAK into program

*special problem

Encryption (hard)

data structures, dp

Typewriter

brute force, math

Double Elimination

dp, implementation

Balance

constructive algorithms, dfs and similar, graphs, trees

Color the Carpet

constructive algorithms

Gang Up

flows, graphs

A Shade of Moonlight

binary search, geometry, math, sortings, two pointers

Virus

data structures, divide and conquer, dsu, graphs

Perun, Ult!

brute force, greedy, sortings

Madoka and The First Session

constructive algorithms, flows, graph matchings, graphs, implementation

Sereja and Straight Lines

binary search, data structures, geometry, sortings, two pointers

AND-permutations

constructive algorithms

Crisp String

bitmasks, dp