Game with Multiset

binary search, bitmasks, brute force, greedy

Kim's Quest

bitmasks, combinatorics, dp

Divisibility Test

math

Accumulator Apex

data structures, implementation, sortings

Remove and Add

*special problem, greedy

Poisonous Swamp

*special problem, *special problem, implementation, implementation

Security Guard

*special problem, greedy

Short Permutation Problem

combinatorics, dp, fft, math

Split Plus K

greedy, math, number theory

Heavy Intervals

constructive algorithms, data structures, dsu, greedy, math, sortings

Shift and Reverse

greedy, sortings

Good Triples

brute force, combinatorics, number theory

Jumping Through Segments

binary search, constructive algorithms

Triangle Construction

greedy, math

Merge Not Sort

constructive algorithms, dp

Largest Subsequence

greedy, strings

Set To Max (Hard Version)

constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings

Set To Max (Easy Version)

brute force, constructive algorithms, greedy

Array Game

binary search, brute force, data structures, sortings, two pointers

Maximum And Queries (easy version)

binary search, bitmasks, brute force, greedy

Theofanis' Nightmare

constructive algorithms, greedy

Collapsing Strings

data structures, strings, trees

Robot Queries

binary search, data structures, dp, implementation

Insert and Equalize

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

Yet Another Monster Fight

binary search, dp, greedy, implementation, math

Add, Divide and Floor

constructive algorithms, greedy, math

Anji's Binary Tree

dfs and similar, dp, trees

Unusual Entertainment

data structures, dfs and similar, dsu, shortest paths, sortings, trees, two pointers

Alex's whims

constructive algorithms, graphs, greedy, shortest paths, trees

Queue Sort

greedy, implementation, sortings

Yarik and Musical Notes

hashing, math, number theory

Absolute Beauty

greedy, math

Colorful Grid

constructive algorithms

Milena and Admirer

greedy, math

Ones and Twos

binary search, data structures, divide and conquer, math, two pointers

Matching Arrays

binary search, constructive algorithms, greedy, sortings

XOR Construction

bitmasks, constructive algorithms, data structures, math, string suffix structures, trees

Torn Lucky Ticket

brute force, dp, hashing, implementation, math

Neutral Tonality

constructive algorithms, greedy, sortings, two pointers

Anonymous Informant

brute force, dfs and similar, graphs, implementation

Suspicious logarithms

binary search, brute force, math

Smilo and Monsters

binary search, constructive algorithms, greedy, sortings, two pointers

Doremy's Connecting Plan

constructive algorithms, greedy, math, sortings

Qingshan Loves Strings 2

constructive algorithms, greedy, implementation

Time Travel

binary search, graphs, shortest paths

Decreasing String

implementation, strings

Medium Design

brute force, data structures, dp, greedy, sortings

Dances (Hard Version)

binary search, greedy, sortings, two pointers

Dances (Easy version)

binary search, greedy, two pointers

You Are So Beautiful

data structures

Look Back

bitmasks, greedy

In Love

data structures, greedy

Tree XOR

bitmasks, dfs and similar, dp, greedy, trees

Card Game

brute force, greedy

Sets and Union

bitmasks, brute force, constructive algorithms, greedy

Minimum Maximum Distance

dfs and similar, dp, graphs, shortest paths, trees

Block Sequence

dp

Divide and Equalize

math, number theory

Sum of XOR Functions

bitmasks, combinatorics, divide and conquer, dp, math

Make it Alternating

combinatorics, dp, greedy

Vasilije Loves Number Theory

brute force, math, number theory

Iva & Pav

binary search, bitmasks, data structures, greedy

Reverse Madness

data structures, greedy

Effects of Anti Pimples

combinatorics, number theory, sortings

Jellyfish and Mex

dp

Jellyfish and Green Apple

bitmasks, greedy, math, number theory

Mad City

dfs and similar, dsu, games, graphs, shortest paths, trees

ABBC or BACB

constructive algorithms, greedy

Money Trees

binary search, greedy, math, two pointers

Selling a Menagerie

dfs and similar, dsu, graphs, implementation, math

Data Structures Fan

binary search, bitmasks, data structures, dp

Prefix Purchase

greedy, implementation, sortings

Colorful Table

binary search, data structures, dp, implementation, math, two pointers

Candy Party (Easy Version)

bitmasks, constructive algorithms, graphs, greedy, implementation, math

Fill in the Matrix

constructive algorithms, implementation

Cyclic Operations

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

Salyg1n and the MEX Game

constructive algorithms, data structures, games, greedy, interactive

Completely Searching for Inversions

dfs and similar, dp, graphs

Battling with Numbers

combinatorics, math, number theory

Matrix Cascade

brute force, constructive algorithms, data structures, dp, greedy, math

Divisor Chain

bitmasks, constructive algorithms, math, number theory

Two-Colored Dominoes

constructive algorithms, greedy

Magic Will Save the World

binary search, bitmasks, brute force, dp

Kolya and Movie Theatre

constructive algorithms, data structures, greedy

Ice Cream Balls

binary search, combinatorics, constructive algorithms, math

Sorting By Multiplication

dp, greedy

Queries for the Array

data structures, dfs and similar, implementation, strings, trees

Game on Permutation

data structures, dp, games, greedy

Andrey and Escape from Capygrad

binary search, data structures, dp, dsu, greedy, sortings

The Walkway

brute force, dp, greedy, math, number theory

Sum and Product

binary search, data structures, math

Power of Points

math, sortings

Strong Vertices

math, sortings, trees

PermuTree (easy version)

dfs and similar, dp, trees

To Become Max

binary search, brute force, data structures, dp

Dual (Hard Version)

constructive algorithms, math

Dual (Easy Version)

constructive algorithms, math

Imbalanced Arrays

constructive algorithms, graphs, greedy, math, sortings, two pointers

Ntarsis' Set

binary search, math, number theory

Lisa and the Martians

bitmasks, greedy, math, strings, trees