Maximum Absurdity

data structures, dp, implementation

XOR and Favorite Number

data structures

The Child and Sequence

data structures, math

Two TVs

data structures, greedy, sortings

Equate Multisets

constructive algorithms, data structures, greedy, math, number theory

Three Blocks Palindrome (hard version)

brute force, data structures, dp, two pointers

Square-Free Division (easy version)

data structures, dp, greedy, math, number theory, two pointers

Mentors

binary search, data structures, implementation

Rorororobot

binary search, data structures, greedy, math

Tokitsukaze and Strange Inequality

brute force, data structures, dp

Minimum Array

binary search, data structures, greedy

Rudolf and k Bridges

binary search, data structures, dp, two pointers

Bus of Characters

data structures, greedy, implementation

Circular RMQ

data structures

Skier

data structures, implementation

Mike and Feet

binary search, data structures, dp, dsu

You Are So Beautiful

data structures

Multiset

binary search, data structures

Balance (Easy version)

brute force, data structures, implementation, number theory

Mind Control

brute force, data structures, implementation

Sonya and Queries

data structures, implementation

Monoblock

combinatorics, data structures, implementation, math

Multiplicity

data structures, dp, implementation, math, number theory

Marvolo Gaunt's Ring

brute force, data structures, dp

T-shirt buying

data structures, implementation

Training Session

combinatorics, data structures, geometry, implementation, math

XOR on Segment

bitmasks, data structures

The Festive Evening

data structures, implementation

Book

binary search, brute force, data structures, dp, graphs, implementation, sortings

Compression and Expansion

brute force, data structures, greedy, implementation, trees

String Deletion

binary search, data structures, greedy, two pointers

MEX and Increments

constructive algorithms, data structures, dp, greedy, implementation, math, sortings

Photo to Remember

*special problem, data structures, dp, implementation

Color with Occurrences

brute force, data structures, dp, greedy, strings

Longest k-Good Segment

binary search, data structures, two pointers

Destroying Array

data structures, dsu

Cd and pwd commands

*special problem, data structures, implementation

Divide and Summarize

binary search, brute force, data structures, divide and conquer, implementation, sortings

Thor

brute force, data structures, implementation

Yet Another Yet Another Task

data structures, dp, implementation, two pointers

Replacement

constructive algorithms, data structures, implementation

Hyperset

brute force, data structures, implementation

Planar Reflections

brute force, data structures, dp

Playlist

brute force, data structures, sortings

Coffee Break

binary search, data structures, greedy, two pointers

Geometric Progression

binary search, data structures, dp

Vasiliy's Multiset

binary search, bitmasks, data structures, trees

Welfare State

binary search, brute force, data structures, sortings

Integers Have Friends

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

Program

data structures, dp, implementation, strings

Game of Credit Cards

data structures, dp, greedy, sortings

Bear and Prime Numbers

binary search, brute force, data structures, dp, implementation, math, number theory

Hits Different

data structures, dp, implementation, math

Little Elephant and Array

constructive algorithms, data structures

Queries for the Array

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

RGB Substring (hard version)

data structures, dp, implementation, two pointers

Pashmak and Parmida's problem

data structures, divide and conquer, sortings

Where is the Pizza?

data structures, dfs and similar, dsu, graphs, implementation, math

Kolya and Movie Theatre

constructive algorithms, data structures, greedy

Zigzags

brute force, combinatorics, data structures, math, two pointers

Binary String Copying

binary search, brute force, data structures, hashing, strings

Rooks Defenders

data structures, implementation

Heavy Intervals

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

In Love

data structures, greedy

Maximum Crossings (Hard Version)

data structures, divide and conquer, sortings

Vlad and an Odd Ordering

binary search, bitmasks, data structures, dp, implementation, math, number theory

Counting Rectangles

brute force, data structures, dp, implementation

Enemy is weak

data structures, trees

Skyscrapers (easy version)

brute force, data structures, dp, greedy

Valeriy and Deque

data structures, implementation

Catch Overflow!

data structures, expression parsing, implementation

Good Substrings

data structures, strings

Almost Increasing Subsequence

binary search, data structures, greedy

Candies!

data structures, dp, implementation, math

Zero Path

brute force, data structures, dp, graphs, greedy, shortest paths

Sum and Product

binary search, data structures, math

Zero-Sum Prefixes

brute force, data structures, dp, greedy, implementation

Three Blocks Palindrome (easy version)

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

Helping the Nature

constructive algorithms, data structures, greedy

Fault-tolerant Network

brute force, data structures, implementation

Salyg1n and the MEX Game

constructive algorithms, data structures, games, greedy, interactive

New Year and Ascent Sequence

binary search, combinatorics, data structures, dp, implementation, sortings

Escape from Stones

constructive algorithms, data structures, implementation, two pointers

Monsters And Spells

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

Array Game

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

Colorful Table

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

13th Labour of Heracles

data structures, greedy, sortings, trees

Build a Contest

data structures, implementation

PolandBall and Game

binary search, data structures, games, greedy, sortings, strings

Tracking Segments

binary search, brute force, data structures, two pointers

To Become Max

binary search, brute force, data structures, dp

Iva & Pav

binary search, bitmasks, data structures, greedy

The Morning Star

combinatorics, data structures, geometry, implementation, math, sortings

Powers of Two

brute force, data structures, implementation, math

MEX maximizing

data structures, greedy, implementation, math

Recent Actions

data structures, greedy, implementation, math

Stack of Presents

data structures, implementation

Tea Tasting

binary search, data structures, implementation

Modulo Sum

combinatorics, data structures, dp, two pointers

Range Update Point Query

binary search, brute force, data structures