Lost Luggage

dp, flows

Clearing the Snowdrift

data structures, dfs and similar, dp, greedy

Homework

bitmasks, math, matrices

Bermuda Triangle

chinese remainder theorem, geometry, implementation, math, number theory

Baggage Claim

combinatorics, dfs and similar, dp, dsu, graphs, implementation, math, trees

Sports Betting

2-sat, brute force, math, sortings

Wonderful XOR Problem

bitmasks, combinatorics, dp, fft, math

Wonderful Guessing Game

bitmasks, constructive algorithms, interactive

Wonderful Impostors

data structures, implementation, two pointers

Wonderful Teddy Bears

greedy, implementation, sortings

Wonderful Lightbulbs

combinatorics, constructive algorithms, math

Wonderful City

dp, implementation

Wonderful Gloves

greedy, math, sortings

Wonderful Sticks

constructive algorithms, greedy

Premiere at a Wrong Time

*special problem

Mysterious Script

*special problem, expression parsing, number theory

Blurry Vision

*special problem, fft, math

Definitely a Geometry Problem

*special problem, geometry

⅓ оf а Рrоblеm

*special problem, math

Pair Count

*special problem, number theory

Where Am I?

*special problem, geometry

Would It Be Unrated?

*special problem, binary search, brute force

Plinko

*special problem, games, interactive

Piecing It Together

*special problem, string suffix structures

La Vaca Saturno Saturnita

binary search, brute force, math, number theory

Chimpanzini Bananini

data structures, implementation, math

Trulimero Trulicina

constructive algorithms

Boneca Ambalabu

bitmasks

Tung Tung Sahur

greedy, strings, two pointers

Brr Brrr Patapim

math

Bobritto Bandito

brute force, constructive algorithms

Trippi Troppi

strings

Shorten the Array

binary search, bitmasks, data structures, dfs and similar, greedy, strings, trees, two pointers

Hackers and Neural Networks

bitmasks, brute force, greedy

Min Max MEX

binary search, brute force, greedy

Skibidi Table

bitmasks, implementation

Simple Repetition

math, number theory

Expensive Number

greedy, math

Ideal Generator

math

Andryusha and CCB

brute force, constructive algorithms, greedy, math, number theory, strings

She knows...

combinatorics, constructive algorithms, graphs, math

Mishkin Energizer

brute force, constructive algorithms, greedy, implementation, strings

Asuna and the Mosquitoes

constructive algorithms, greedy, math

Lady Bug

brute force, constructive algorithms, implementation, math

Kamilka and the Sheep

greedy, math, number theory, sortings

Gleb and Boating

brute force, constructive algorithms, data structures, dp, graphs, greedy, math, number theory, shortest paths

Igor and Mountain

binary search, brute force, dp

Interesting Ratio

brute force, math, number theory, two pointers

Place of the Olympiad

binary search, greedy, math

Combination Lock

constructive algorithms, greedy

Team Training

dp, greedy, sortings

Olympiad Date

greedy, strings

Dining Hall

data structures, greedy, implementation, sortings

Pushing Balls

brute force, dp, implementation

Treasure Hunt

implementation, math

Black Cat Collapse

Conditional Operators

constructive algorithms

Key of Like (Hard Version)

dp, math, probabilities

Key of Like (Easy Version)

dp, games, math, probabilities

Canteen (Hard Version)

binary search, data structures, dp, flows, greedy, two pointers

Canteen (Easy Version)

binary search, data structures, flows, greedy, two pointers

Simple Permutation

constructive algorithms, number theory

Hamiltonian Partition

*special problem, *special problem

Nim with Special Numbers

*special problem, *special problem

Esports in Berland

*special problem, *special problem, greedy, greedy

Weapon Upgrade

*special problem, *special problem, dp

Color the Arrows

*special problem, *special problem, dp, dp

Uppercase or Lowercase?

*special problem, *special problem, interactive

Coin Game

*special problem, greedy

Showmatch

*special problem

Password Generator

*special problem

Online Palindrome

brute force, constructive algorithms, interactive

Zebra-like Numbers

bitmasks, brute force, constructive algorithms, dfs and similar, dp, greedy, math

Even String

brute force, combinatorics, dp, math, strings

Disappearing Permutation

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

Large Array and Segments

binary search, brute force, greedy

Cloudberry Jam

math

Serval and Colorful Array (Hard Version)

data structures, greedy

Serval and Colorful Array (Easy Version)

data structures, greedy

Serval and Modulo

constructive algorithms, math, number theory

Serval and Kaitenzushi Buffet

data structures, graph matchings, greedy

Serval and The Formula

bitmasks, constructive algorithms, dp, greedy

Serval and Final MEX

constructive algorithms, implementation

Serval and String Theory

constructive algorithms, implementation

Turtle and Nediam 2

dp, greedy

Wish Upon a Satellite (Hard Version)

data structures, dp

Wish Upon a Satellite (Easy Version)

dp, games

Skyscape

constructive algorithms, data structures, greedy

Blossom

binary search, combinatorics, dp, implementation, math, two pointers

Arcology On Permafrost

binary search, brute force, constructive algorithms, greedy, math

You Soared Afar With Grace

constructive algorithms, data structures, greedy, implementation

MIN = GCD

greedy, math, number theory

Max and Mod

constructive algorithms, math

Floor or Ceil

brute force, greedy

Binary Matrix

constructive algorithms, greedy

Hard Formula (Hard Version)

math

Hard Formula

math, number theory

Hot Matrix

constructive algorithms, math

Quantifier

combinatorics, dp, implementation

MST in Modulo Graph

constructive algorithms, dsu, graphs, greedy, math, number theory, sortings, trees