Spanning Tree Queries

binary search, data structures, dfs and similar, dsu, graphs, greedy, math, sortings, trees

Ina of the Mountain

data structures, dp, greedy, math

Wrong Answer on test 233 (Hard Version)

combinatorics, math

Prime Gift

binary search, dfs and similar, math, meet-in-the-middle, number theory, two pointers

Half Queen Cover

constructive algorithms, math

Tonya and Burenka-179

data structures, greedy, math, number theory

Hyperregular Bracket Strings

combinatorics, greedy, hashing, math, number theory, sortings

Bored Bakry

bitmasks, greedy, math, two pointers

Chopping Carrots (Hard Version)

brute force, constructive algorithms, data structures, dp, greedy, math, number theory, two pointers

Too Many Impostors (hard version)

constructive algorithms, implementation, interactive, math

Red-Blue Operations (Hard Version)

binary search, constructive algorithms, greedy, implementation, math

Broken robot

dp, math, probabilities

Please, another Queries on Array?

bitmasks, data structures, divide and conquer, math, number theory

MEX Tree

combinatorics, dfs and similar, implementation, math, trees

Omkar and Landslide

binary search, constructive algorithms, data structures, greedy, math

Mahmoud and Ehab and yet another xor task

bitmasks, dp, math, matrices

Phoenix and Berries

brute force, dp, greedy, math

Game on Sum (Hard Version)

combinatorics, dp, games, math

Thief in a Shop

divide and conquer, dp, fft, math

Team Work

combinatorics, dp, math

DZY Loves Fibonacci Numbers

data structures, math, number theory

Two IP Cameras

*special problem, math, number theory

Big Number and Remainder

*special problem, math, number theory

Berland Square

implementation, math

Archer's Shot

binary search, geometry, math, two pointers

Divisibility Rules

math, number theory

Square Equation Roots

math

Summer Homework

data structures, math

Strange town

constructive algorithms, math

Lesson Timetable

combinatorics, dp, math

Party Organization

brute force, math, probabilities

Summer Homework

data structures, math

Bear in the Field

math, matrices

Wizards and Numbers

games, math

Wilbur and Trees

dp, math, probabilities, sortings

Timetable

constructive algorithms, data structures, greedy, math

Danger of Mad Snakes

combinatorics, dp, math

Fibonacci Sums

dp, math

Turtle Magic: Royal Turtle Shell Pattern

bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math

Moving Platforms

graphs, math, number theory, shortest paths

Little Victor and Set

brute force, constructive algorithms, math

Barrels and boxes

brute force, combinatorics, math, number theory, probabilities

Graph Traveler

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

Empire Strikes Back

binary search, math, number theory

Restoring the Expression

brute force, hashing, math

Coprime Arrays

math, number theory

City Union

constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math

Bamboo Partition

brute force, data structures, implementation, math, number theory, sortings, two pointers

Vulnerable Kerbals

constructive algorithms, dp, graphs, math, number theory

Li Hua and Array

brute force, data structures, dsu, math, number theory, two pointers

Mice problem

geometry, implementation, math, sortings

Max History

combinatorics, math

Different Subsets For All Tuples

combinatorics, math

ZS and The Birthday Paradox

math, number theory, probabilities

Point Ordering

constructive algorithms, geometry, interactive, math

Kleofáš and the n-thlon

dp, math, probabilities

Fenwick Tree

bitmasks, brute force, combinatorics, data structures, dp, math, trees

Card Bag

dp, math, probabilities

Robot Cleaner Revisit

implementation, math, probabilities

Nikita and Order Statistics

chinese remainder theorem, fft, math

Anton and Ira

constructive algorithms, greedy, math

Cost Equilibrium

combinatorics, constructive algorithms, math, sortings

Gregor and the Odd Cows (Easy)

bitmasks, geometry, math, number theory

Rubik's Cube Coloring (hard version)

brute force, dp, implementation, math, trees

Balance Addicts

combinatorics, dp, math, two pointers

Beautiful Rectangle

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

Omsk Metro (hard version)

data structures, dfs and similar, divide and conquer, dp, math, trees

Paint Charges

data structures, dp, greedy, math

Shortest Path Problem?

dfs and similar, graphs, math

Jellyfish and EVA

dp, graphs, greedy, math, probabilities

Sasha and the Happy Tree Cutting

bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees

Tenzing and Triangle

data structures, dp, geometry, greedy, math

Poman Numbers

bitmasks, greedy, math, strings

Modular Sequence

brute force, constructive algorithms, dp, graphs, greedy, math, number theory

Inversion Expectation

dp, math, probabilities

Scalar Queries

combinatorics, data structures, math, sortings

Natasha, Sasha and the Prefix Sums

combinatorics, dp, math, number theory

(Zero XOR Subset)-less

math, matrices

Non-Intersecting Subpermutations

combinatorics, dp, implementation, math

AmShZ and G.O.A.T.

binary search, brute force, greedy, implementation, math

Sasha and the Wedding Binary Search Tree

brute force, combinatorics, data structures, dfs and similar, math, trees

Sum Queries?

data structures, greedy, implementation, math

Red-Black Pepper

brute force, data structures, greedy, math, number theory

Earth Wind and Fire

constructive algorithms, greedy, math, sortings, two pointers

Yet Another Inversions Problem

combinatorics, data structures, dp, implementation, math, number theory

Vasya and Magic Matrix

dp, math, probabilities

Leaving the Bar

brute force, data structures, geometry, greedy, math, sortings

Yet Another Array Counting Problem

binary search, data structures, divide and conquer, dp, flows, math, trees

Excellent Arrays

binary search, combinatorics, constructive algorithms, implementation, math, sortings, two pointers

Partial Sorting

combinatorics, math, number theory

Binary Spiders

bitmasks, data structures, implementation, math, sortings, trees

Extreme Extension

dp, greedy, math, number theory

Steps to One

dp, math, number theory, probabilities

Arithmetic Operations

brute force, data structures, graphs, math

Game of the Year

brute force, data structures, math, number theory

LCM Sum (easy version)

binary search, brute force, combinatorics, math, number theory, two pointers

MEX of LCM

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

Pairwise Modulo

data structures, math

Instant Noodles

graphs, hashing, math, number theory

Hemose in ICPC ?

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