Far Relative’s Problem

brute force

Bear and Three Balls

brute force, implementation, sortings

The Best Vacation

binary search, brute force, greedy, implementation, two pointers

Menorah

brute force, graphs, greedy, math

Tandem Repeats?

brute force, strings, two pointers

Tokitsukaze and Strange Inequality

brute force, data structures, dp

Maximum Product Strikes Back

brute force, implementation, math, two pointers

Points on the line

brute force, greedy, sortings

Convert to Ones

brute force, greedy, implementation, math

Strongly Connected City

brute force, dfs and similar, graphs, implementation

Balance (Easy version)

brute force, data structures, implementation, number theory

Koxia and Number Theory

brute force, chinese remainder theorem, math, number theory

Mike and strings

brute force, dp, strings

Mike and Fun

brute force, dp, greedy, implementation

Magic Forest

brute force

Mind Control

brute force, data structures, implementation

Connect

brute force, dfs and similar, dsu

Reverse Card (Easy Version)

brute force, math, number theory

Marvolo Gaunt's Ring

brute force, data structures, dp

Two Bases

brute force, implementation

Almost Arithmetic Progression

brute force, implementation, math

Parallelogram is Back

brute force, constructive algorithms, geometry

Ball Game

brute force, implementation

Jamie and Alarm Snooze

brute force, implementation, math

Let's Watch Football

binary search, brute force, math

Bark to Unlock

brute force, implementation, strings

Single Wildcard Pattern Matching

brute force, implementation, strings

Art Union

brute force, dp, implementation

Book

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

Optimal Point on a Line

brute force, sortings

Running Miles

brute force, dp, greedy

Going Home

brute force, hashing, implementation, math

Compression and Expansion

brute force, data structures, greedy, implementation, trees

Color with Occurrences

brute force, data structures, dp, greedy, strings

Cake Assembly Line

brute force, sortings

Mike and Children

brute force, implementation

Three Integers

brute force, math

p-binary

bitmasks, brute force, math

Simple Molecules

brute force, graphs, math

A + B Strikes Back

*special problem, brute force, constructive algorithms, dsu, implementation

Polo the Penguin and Segments

brute force, implementation

Optimal Currency Exchange

brute force, math

Replace by MEX

brute force, constructive algorithms, sortings

Run For Your Prize

brute force, greedy

Good Triples

brute force, combinatorics, number theory

Economy Game

brute force

Alyona and copybooks

brute force, implementation

Seat Arrangements

brute force, implementation

Dima and Lisa

brute force, math, number theory

Beautiful Numbers

brute force, combinatorics

Polycarp and Letters

brute force, implementation, strings

Eat the Chip

brute force, games, greedy, math

Modulo Equality

brute force, sortings

Karen and Morning

brute force, implementation

Divide and Summarize

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

Mountain Scenery

brute force, constructive algorithms, implementation

Hacking Cypher

brute force, math, number theory, strings

Even Subarrays

bitmasks, brute force, hashing, math, number theory

Little Elephant and Chess

brute force, strings

Thor

brute force, data structures, implementation

Row

brute force, constructive algorithms

Arpa’s obvious problem and Mehrdad’s terrible solution

brute force, math, number theory

Antipalindrome

brute force, implementation, strings

Basic Diplomacy

brute force, constructive algorithms, greedy, implementation

Caisa and Sugar

brute force, implementation

Interview

brute force, implementation

Vasya and Multisets

brute force, dp, greedy, implementation, math

Fixed Points

brute force, implementation, math

Ceil Divisions

brute force, constructive algorithms, math, number theory

Generate Login

brute force, greedy, sortings

Planar Reflections

brute force, data structures, dp

Hyperset

brute force, data structures, implementation

Colorful Graph

brute force, dfs and similar, graphs

Welfare State

binary search, brute force, data structures, sortings

Segment Occurrences

brute force, implementation

Playlist

brute force, data structures, sortings

Required Length

brute force, dfs and similar, dp, hashing, shortest paths

Proper Nutrition

brute force, implementation, number theory

Crossword solving

brute force, implementation, strings

Permutation Game

brute force, dfs and similar, games, graphs, greedy, math

The Artful Expedient

brute force, implementation

Watering an Array

brute force, greedy, implementation, math

Bear and Prime Numbers

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

Tokitsukaze and Mahjong

brute force, implementation

Classroom Watch

brute force, math

Remove Adjacent

brute force, constructive algorithms, greedy, strings

Long Legs

brute force, math

Exchange

brute force, math

Floor and Mod

binary search, brute force, math, number theory

Bear and Strings

brute force, greedy, implementation, math, strings

Pride

brute force, dp, greedy, math, number theory

Line Empire

binary search, brute force, dp, greedy, implementation, math

Ohana Cleans Up

brute force, greedy, strings

New Year and Old Property

bitmasks, brute force, implementation

Zigzags

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

Zuhair and Strings

brute force, implementation, strings

Planning The Expedition

binary search, brute force, implementation

Binary String Copying

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

Orray

bitmasks, brute force, greedy, math, sortings

Mike and Fax

brute force, implementation, strings