Interactive Game with Coloring

brute force, constructive algorithms, dfs and similar, graphs, implementation, interactive, trees

Decreasing Game

constructive algorithms, dfs and similar, dp, greedy, interactive

Connectivity Addicts

constructive algorithms, dsu, graphs, greedy, interactive, shortest paths, trees

Palindromic Paths

implementation, interactive

The penguin's game

binary search, constructive algorithms, interactive

X-OR

bitmasks, constructive algorithms, divide and conquer, interactive, probabilities

Cat, Fox and Maximum Array Split

brute force, interactive

Hidden Fortress

interactive, math

Rollbacks (Hard Version)

data structures, interactive, trees

Game of Pairs

constructive algorithms, dfs and similar, interactive, math, number theory

Secure Password

bitmasks, combinatorics, constructive algorithms, interactive, math

In Search of Truth (Hard Version)

constructive algorithms, interactive, math, meet-in-the-middle, probabilities

Magnets

binary search, constructive algorithms, interactive

Lamps on a Circle

games, implementation, interactive, math

Dasha and Chess

constructive algorithms, games, interactive

Guess Divisors Count

constructive algorithms, interactive, number theory

Anti-Theft Road Planning

bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math

Library game

games, greedy, interactive, sortings

Intriguing Selection

brute force, constructive algorithms, implementation, interactive, sortings

Find a Gift

binary search, interactive, probabilities

Assiut Chess

brute force, constructive algorithms, interactive

Lost Root

interactive, probabilities

Katya and Segments Sets

data structures, interactive, sortings

Coffee Varieties (hard version)

constructive algorithms, graphs, interactive

Spinach Pizza

games, geometry, greedy, interactive

Olha and Igor

interactive, probabilities, trees

Madhouse (Hard version)

brute force, constructive algorithms, hashing, interactive, math

Baby Ehab's Hyper Apartment

binary search, graphs, interactive, sortings, two pointers

Hidden Bipartite Graph

binary search, constructive algorithms, dfs and similar, graphs, interactive

Mark and the Online Exam

bitmasks, constructive algorithms, interactive, probabilities

Doremy's Perfect DS Class (Easy Version)

binary search, interactive

Guess the number

dp, interactive

Michael and Hotel

binary search, interactive, trees

Coffee Varieties (easy version)

graphs, interactive

Crop Squares

constructive algorithms, geometry, interactive, math

Doremy's Perfect DS Class (Medium Version)

binary search, interactive

Jamie and To-do List

data structures, interactive, trees

Pink Floyd

graphs, interactive

New Year and Finding Roots

constructive algorithms, implementation, interactive, trees

Yui and Mahjong Set

constructive algorithms, interactive

AquaMoon and Wrong Coordinate

constructive algorithms, interactive, math

Interactive Factorial Guessing

brute force, games, implementation, interactive

Is It Rated?

greedy, interactive, math, probabilities

Tricky Interactor

constructive algorithms, implementation, interactive

The Mind

constructive algorithms, interactive, probabilities

Doremy's Perfect DS Class (Hard Version)

binary search, interactive

Omkar and Modes

binary search, divide and conquer, interactive

Legendary Tree

binary search, interactive, trees

Arithmancy (Easy)

brute force, constructive algorithms, interactive, strings

Guess two numbers

binary search, interactive

Cactus Search

interactive

Enchanted Matrix

bitmasks, interactive, number theory

Joking (Hard Version)

dp, interactive

Tubular Bells

interactive, math, number theory, probabilities

Guess the String

constructive algorithms, interactive, probabilities

Matching Reduction

brute force, constructive algorithms, dfs and similar, flows, graph matchings, graphs, interactive

Finding lines

constructive algorithms, divide and conquer, interactive

Hot and Cold

binary search, interactive

Fading into Fog

geometry, interactive, math, probabilities

Good Colorings

binary search, constructive algorithms, graphs, interactive

Rin and The Unknown Flower

constructive algorithms, greedy, interactive, math

Rainbow Coins

interactive

Triangle Platinum?

brute force, combinatorics, implementation, interactive, math, probabilities

Guess the Perimeter

binary search, interactive, number theory

Pepe Racing

constructive algorithms, implementation, interactive, sortings

Perfect Matching

data structures, divide and conquer, interactive, trees

Stuck Conveyor

binary search, constructive algorithms, interactive

How to Learn You Score

constructive algorithms, interactive

The Potion of Great Power

*special problem, 2-sat, binary search, data structures, graphs, interactive, sortings, two pointers

Interactive Bulls and Cows (Hard)

brute force, constructive algorithms, interactive

Vabank

binary search, interactive

Median Queries

constructive algorithms, interactive, probabilities

Colors

*special problem, binary search, constructive algorithms, interactive

Roads in E City

interactive, math, probabilities, trees

Zigzag Game

games, interactive

New Year and the Factorisation Collaboration

interactive, math, number theory

New Year and Snowy Grid

dfs and similar, dsu, graphs, interactive

Graph Coloring

data structures, graphs, interactive

The Riddle of the Sphinx

binary search, data structures, data structures, interactive

Alesya and Discrete Math

divide and conquer, interactive

Cursed Game

interactive

AI Takeover

interactive

So Mean

interactive, math

Strange device

binary search, interactive, math, trees

Milutin's Plums

interactive

Lost Nodes

constructive algorithms, dp, graphs, interactive, sortings, trees

Knightmare (hard)

graphs, interactive, shortest paths

Expected Twist

*special problem, interactive

Finding the Vertex

brute force, dfs and similar, dp, interactive, trees

Tree Diameter

interactive, trees

Anti-Proxy Attendance

constructive algorithms, dp, interactive, ternary search

Differentiating Games

games, interactive

Arithmancy (Medium)

constructive algorithms, interactive, probabilities, strings

Knightmare (easy)

graphs, interactive, shortest paths

Interactive Mex Tree

constructive algorithms, dfs and similar, interactive, trees

Xor-quiz

constructive algorithms, dp, interactive, math, number theory

Verifying Kingdom

binary search, divide and conquer, interactive, trees

Centroid Guess

interactive, probabilities, trees

Шардирование постов

*special problem, binary search, interactive

Rotary Laser Lock

binary search, interactive