K-th Beautiful String

binary search, brute force, combinatorics, implementation, math

Infinite Path

brute force, dfs and similar, graphs, math, number theory

Princesses and Princes

brute force, graphs, greedy

Wise Men (Easy Version)

bitmasks, brute force, dp, meet-in-the-middle

Ehab's REAL Number Theory Problem

brute force, dfs and similar, graphs, number theory, shortest paths

Yet Another Palindrome Problem

brute force, strings

Even Subset Sum Problem

brute force, dp, greedy, implementation

String Modification

brute force, constructive algorithms, implementation, sortings, strings

Kuroni and Antihype

bitmasks, brute force, dp, dsu, graphs

Kuroni and Impossible Calculation

brute force, combinatorics, math, number theory

Kuroni and the Gifts

brute force, constructive algorithms, greedy, sortings

Remove Adjacent

brute force, constructive algorithms, greedy, strings

Blocks and Sensors

brute force

World of Darkraft: Battle for Azathoth

brute force, data structures, sortings

Construct the Binary Tree

brute force, constructive algorithms, trees

Three Integers

brute force, math

Perform the Combo

brute force

Skyscrapers (easy version)

brute force, data structures, dp, greedy

Fast Food Restaurant

brute force, greedy, implementation

Cow and Message

brute force, dp, math, strings

Longest Palindrome

brute force, constructive algorithms, greedy, implementation, strings

Anu Has a Function

brute force, greedy, math

Keep talking and nobody explodes -- easy

bitmasks, brute force, expression parsing

Mind Control

brute force, data structures, implementation

ConneR and the A.R.C. Markland-N

binary search, brute force, implementation

Aroma's Search

brute force, constructive algorithms, geometry, greedy, implementation

Deadline

binary search, brute force, math, ternary search

Delete a Segment

brute force, constructive algorithms, data structures, dp, graphs, sortings, trees, two pointers

Dr. Evil Underscores

bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees

Fadi and LCM

brute force, math, number theory

Hyperset

brute force, data structures, implementation

Harry The Potter

brute force, constructive algorithms, dp, fft, implementation, math

Madhouse (Hard version)

brute force, constructive algorithms, hashing, interactive, math

Madhouse (Easy version)

brute force, constructive algorithms, interactive, math

Verse For Santa

binary search, brute force, implementation

Modulo Equality

brute force, sortings

Invertation in Tournament

brute force, divide and conquer, graphs, math

Equation

brute force, math

Shuffle Hashing

brute force, implementation, strings

Divide The Students

brute force

Shawarma Tent

brute force, geometry, greedy, implementation

Suits

brute force, greedy, math

Beautiful Rectangle

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

Remove One Element

brute force, dp

Three Friends

brute force, greedy, math, sortings

Beautiful Sequence

brute force, constructive algorithms, greedy

Intriguing Selection

brute force, constructive algorithms, implementation, interactive, sortings

Tournament

brute force, dp, greedy

Make Them Similar

bitmasks, brute force, hashing, meet-in-the-middle

Daniel and Spring Cleaning

bitmasks, brute force, combinatorics, dp

Show Must Go On

binary search, brute force, greedy, shortest paths

Data Center

brute force, implementation

The Feast and the Bus

brute force, constructive algorithms, greedy, math

p-binary

bitmasks, brute force, math

Broken Keyboard

brute force, strings, two pointers

Tiling Terrace

brute force, dp

Good Numbers (easy version)

brute force, greedy, implementation

The World Is Just a Programming Task (Easy Version)

brute force, dp, greedy, implementation

Alice and the Doll

brute force, data structures, greedy, implementation

Stones

brute force, greedy, math

Paint the Tree

brute force, constructive algorithms, dp, graphs, implementation, trees

The Football Season

brute force, math, number theory

Rooms and Staircases

brute force, implementation

Complete Tripartite

brute force, constructive algorithms, graphs, hashing, implementation

Distinct Digits

brute force, implementation

Dawid and Bags of Candies

brute force, implementation

Marek and Matching (hard version)

brute force, probabilities

Marek and Matching (easy version)

brute force, probabilities

Marcin and Training Camp

brute force, greedy

Anadi and Domino

brute force, graphs

Numerical Sequence (easy version)

binary search, brute force, math

Graph And Numbers

bitmasks, brute force, combinatorics, dp, meet-in-the-middle

2048 Game

brute force, greedy, math

Rotate Columns (easy version)

bitmasks, brute force, dp, greedy, sortings

The Number Of Good Substrings

binary search, bitmasks, brute force

Badges

brute force, math

Optimal Currency Exchange

brute force, math

Two Small Strings

brute force, constructive algorithms

Equalizing by Division (hard version)

brute force, math, sortings

Equalizing by Division (easy version)

brute force, implementation

Uniqueness

binary search, brute force, implementation, two pointers

Remainder Problem

brute force, data structures, implementation

There Are Two Types Of Burgers

brute force, greedy, implementation, math

Kirk and a Binary String (easy version)

brute force, greedy, strings

Shortest Cycle

bitmasks, brute force, graphs, shortest paths

Graph Traveler

brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory

Compress Words

brute force, hashing, implementation, string suffix structures, strings

White Lines

brute force, data structures, dp, implementation, two pointers

Hotelier

brute force, data structures, implementation

You Are Given Some Strings...

brute force, string suffix structures, strings

You Are Given a WASD-string...

brute force, data structures, dp, greedy, implementation, math, strings

You Are Given a Decimal String...

brute force, dp, shortest paths

Welfare State

binary search, brute force, data structures, sortings

Cubeword

*special problem, brute force, dp, meet-in-the-middle

K-th Path

brute force, constructive algorithms, shortest paths, sortings

Three Piles of Candies

brute force, constructive algorithms, math

Sport Mafia

binary search, brute force, math

Archaeology

brute force, constructive algorithms, greedy, strings

Count The Rectangles

bitmasks, brute force, data structures, geometry, sortings

Tokitsukaze and Duel

brute force, games, greedy