Nearly Lucky Number

implementation

Lucky Interval

brute force, math

Lucky Sorting

constructive algorithms, sortings

Lucky Tree

dp, dsu, trees

Lucky Probability

brute force, probabilities

Lucky Sum of Digits

brute force, implementation

Datatypes

math, sortings

Palindromic Times

implementation, strings

Darts

geometry, probabilities

Crime Management

dp, graphs, matrices

Arrangement

bitmasks, dp

Basketball Team

combinatorics, dp, math, probabilities

Dorm Water Supply

dfs and similar, graphs

Space Rescuers

geometry, ternary search

Treasure Island

brute force, implementation

Buns

dp

Choosing Laptop

brute force, implementation

Card Game

implementation

Lift and Throw

brute force

Entertaining Geodetics

brute force, dsu, implementation

Item World

brute force, implementation, sortings

Dark Assembly

brute force, probabilities

Transmigration

implementation

Blackjack

implementation

Buying Sets

flows, graph matchings

Time to Raid Cowavans

brute force, data structures, sortings

Russian Roulette

constructive algorithms, greedy

Cthulhu

dfs and similar, dsu, graphs

Testing Pants for Sadness

greedy, implementation, math

Sum of Digits

implementation

Clothes

brute force

Candies and Stones

divide and conquer, dp

Castle

dp, greedy, probabilities, sortings, trees

Vectors

implementation, math

Buses

binary search, data structures, dp

Homework

greedy

Interval Coloring

*special problem, greedy, math

Rotation

*special problem, geometry, math

Battleship

*special problem, dfs and similar, implementation

Name the album

*special problem, data structures, implementation

Polynom

*special problem, implementation

Lamps in a Line

*special problem, math

World of Mouth

*special problem, strings

A+B

*special problem, implementation

Friendly Numbers

*special problem, implementation

Carpeting the Room

*special problem, implementation

Help Chef Gerasim

implementation, sortings

Help Far Away Kingdom

strings

Help Shrek and Donkey

dp, games, math, probabilities

Help Monks

constructive algorithms

Help Greg the Dwarf

geometry, ternary search

Help King

implementation, probabilities, trees

Help Victoria the Wise

brute force, implementation

Leaders

dfs and similar, dsu, graphs, trees

Robot in Basement

bitmasks, brute force, implementation

Winning Strategy

binary search, graphs, math, shortest paths

Superset

constructive algorithms, divide and conquer

Domino

brute force, implementation

Lucky Numbers (easy)

binary search, bitmasks, brute force

Football

implementation, strings

Lucky Country

dp, dsu, graphs

Horse Races

dp, math

Volleyball

shortest paths

Lucky Numbers

dp, greedy

Hockey

implementation, strings

Friends

graphs, implementation, math

Restoring Password

implementation, strings

Lostborn

dp, math, number theory

Flags

dp, math, matrices

Azembler

brute force, implementation

End of Exams

greedy

Frames

implementation

Binary Number

greedy

Chips

implementation, math

Igloo Skyscraper

data structures, geometry

Grocer's Problem

constructive algorithms, graphs, greedy

Ski Base

combinatorics, dsu, graphs

Queue

binary search, data structures

Newspaper Headline

greedy, strings

African Crossword

implementation, strings

Cableway

greedy, math

Fire and Ice

greedy

Space mines

geometry

Chip Play

brute force, data structures, implementation

Widget Library

dp, expression parsing, graphs, implementation

Robbery

greedy

Keyboard

implementation

Chord

brute force, implementation

Mogohu-Rea Idol

geometry

Beautiful Road

dfs and similar, dp, dsu, graphs, implementation, sortings, trees

Interesting Game

dp, games, math

Vasya and Types

implementation, strings

Trains

implementation, math

Long sequence

brute force, math, matrices

Powerful array

data structures, implementation, math, two pointers

Genetic engineering

dp, string suffix structures, trees

Tetris revisited

constructive algorithms, graph matchings, greedy, math

Reflection

math

Guard Towers

binary search, dsu, geometry, graphs, sortings

Sum of Medians

binary search, brute force, data structures, implementation