Is it rated - 2

*special problem, implementation, interactive

AquaMoon and Stolen String

interactive, math

Bear and Prime 100

constructive algorithms, interactive, math

Interview

binary search, implementation, interactive

PolandBall and Forest

dfs and similar, dsu, graphs, interactive, trees

Guessing the Greatest (easy version)

binary search, interactive

Chocolate Bunny

constructive algorithms, interactive, math, two pointers

Searching Local Minimum

binary search, interactive, ternary search

Guess the K-th Zero (Easy version)

binary search, interactive

Lost Numbers

brute force, divide and conquer, interactive, math

Salyg1n and the MEX Game

constructive algorithms, data structures, games, greedy, interactive

Fixed Point Guessing

binary search, constructive algorithms, interactive

Guessing the Greatest (hard version)

binary search, interactive

RPD and Rap Sheet (Easy Version)

bitmasks, constructive algorithms, interactive, math

Li Hua and Chess

constructive algorithms, greedy, interactive

Guess the Array

constructive algorithms, interactive, math

3-Coloring

constructive algorithms, games, interactive

Guess the Cycle Size

interactive, probabilities

Hidden Permutations

dfs and similar, interactive, math

Bitwise Operation Wizard

bitmasks, constructive algorithms, greedy, interactive, math

Take a Guess

bitmasks, constructive algorithms, interactive, math

Find a Mine

binary search, constructive algorithms, geometry, greedy, interactive, math

Lost Tree

constructive algorithms, interactive, trees

XOR Guessing

bitmasks, interactive, math

Tournament Countdown

constructive algorithms, greedy, interactive, number theory, probabilities

Flamingoes of Mystery

interactive

Omkar and the Meaning of Life

constructive algorithms, greedy, interactive

Rocket

binary search, interactive

Kuroni and the Celebration

constructive algorithms, dfs and similar, interactive, trees

Bit Guessing Game

binary search, bitmasks, constructive algorithms, interactive

Too Many Impostors (easy version)

constructive algorithms, implementation, interactive

Strange Device

constructive algorithms, interactive, math, sortings

Guess The String

binary search, constructive algorithms, interactive

Nastia and a Hidden Permutation

constructive algorithms, interactive

Finding Zero

constructive algorithms, interactive, math

Bitwise Queries (Easy Version)

bitmasks, constructive algorithms, interactive, math

Guess The Maximums

binary search, implementation, interactive, math

GCD Guess

bitmasks, chinese remainder theorem, constructive algorithms, games, interactive, math, number theory

Salyg1n and Array (simple version)

constructive algorithms, interactive, math

Guess the Permutation

binary search, combinatorics, interactive, math

Tree Diameter

bitmasks, graphs, interactive

Railway System

constructive algorithms, graphs, greedy, interactive, sortings

GCD Queries

constructive algorithms, interactive, number theory

Omkar and Duck

bitmasks, constructive algorithms, interactive, math

Interacdive Problem

binary search, constructive algorithms, interactive

Game with modulo

binary search, constructive algorithms, interactive

More Wrong

divide and conquer, interactive

Grid Xor

constructive algorithms, greedy, implementation, interactive, math

Salyg1n and Array (hard version)

constructive algorithms, interactive

Guess the K-th Zero (Hard version)

binary search, constructive algorithms, data structures, interactive

Rudolph and Mimic

constructive algorithms, implementation, interactive

Sum Graph

brute force, constructive algorithms, graphs, implementation, interactive, shortest paths, trees

Bitwise Queries (Hard Version)

bitmasks, constructive algorithms, interactive, math

Dwarves, Hats and Extrasensory Abilities

binary search, constructive algorithms, geometry, interactive

Arithmetic Progression

binary search, interactive, number theory, probabilities

Ehab and another another xor problem

bitmasks, constructive algorithms, implementation, interactive

Gold Transfer

binary search, data structures, dp, greedy, interactive, trees

Minimum and Maximum

constructive algorithms, interactive

Pick Heroes

greedy, implementation, interactive, sortings

Divisors

interactive, math, number theory

Subway Pursuit

binary search, interactive, probabilities

In Search of Truth (Easy Version)

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

Hemose in ICPC ?

binary search, dfs and similar, implementation, interactive, math, number theory, trees

Interactive LowerBound

brute force, interactive, probabilities

notepad.exe

binary search, constructive algorithms, greedy, interactive

Enchanted Artifact

constructive algorithms, interactive, strings

Ithea Plays With Chtholly

binary search, constructive algorithms, games, greedy, interactive

A Map of the Cat

brute force, interactive

Down or Right

constructive algorithms, interactive, matrices

RPD and Rap Sheet (Hard Version)

brute force, constructive algorithms, interactive, math

Integer Game

constructive algorithms, games, interactive, math

The hat

binary search, interactive

Lost Array

graphs, greedy, interactive, shortest paths

Two Houses

brute force, graphs, greedy, interactive, sortings

Geo Game

greedy, interactive, math

Too Many Impostors (hard version)

constructive algorithms, implementation, interactive, math

Hongcow's Game

bitmasks, divide and conquer, interactive

Anya's Simultaneous Exhibition

constructive algorithms, graphs, greedy, interactive, sortings

String Set Queries

brute force, data structures, hashing, interactive, string suffix structures, strings

Mahmoud and Ehab and the binary string

binary search, divide and conquer, interactive

ace5 and Task Order

constructive algorithms, divide and conquer, implementation, interactive, probabilities, sortings

Deleting Numbers

interactive, math, number theory

Intersecting Subtrees

dfs and similar, interactive, trees

Vladik and Favorite Game

constructive algorithms, dfs and similar, graphs, interactive

Cooperative Game

constructive algorithms, interactive, number theory

Decypher the String

bitmasks, chinese remainder theorem, constructive algorithms, interactive, math

Ehab and the Big Finale

constructive algorithms, divide and conquer, graphs, implementation, interactive, trees

Serval and Snake

binary search, brute force, interactive

Glad to see you!

binary search, interactive

Searching Rectangles

binary search, constructive algorithms, interactive

Guess the Root

brute force, interactive, math

Interactive Treasure Hunt

brute force, constructive algorithms, geometry, interactive, math

The Hidden Pair (Easy Version)

binary search, dfs and similar, graphs, interactive, shortest paths, trees

Joking (Easy Version)

binary search, constructive algorithms, interactive, ternary search

Strange Shuffle

binary search, brute force, constructive algorithms, interactive

Point Ordering

constructive algorithms, geometry, interactive, math

Madhouse (Easy version)

brute force, constructive algorithms, interactive, math

The Hidden Pair (Hard Version)

binary search, dfs and similar, graphs, interactive, shortest paths, trees

XOR Break --- Game Version

bitmasks, games, greedy, interactive

Something with XOR Queries

brute force, interactive, probabilities