Lihmuf Balling

binary search, brute force, math

Magical Permutation

bitmasks, brute force, constructive algorithms, data structures, graphs, math

Geometrical Progression

brute force, math, number theory

Project Manager

brute force, data structures, implementation

Cube Problem

brute force, math, number theory

Rectangles and Square

brute force, dp

Plane of Tanks: Duel

brute force, dp, math, probabilities

Domino

brute force, implementation

Mocha and Diana (Hard Version)

brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, trees, two pointers

Subset Sums

brute force, data structures

Fuzzy Search

bitmasks, brute force, fft

Xor of 3

brute force, constructive algorithms, greedy, two pointers

Maximum Monogonosity

brute force, dp, math

The Number of Subpermutations

brute force, data structures, divide and conquer, hashing, math

Two Editorials

brute force, dp, greedy, sortings, two pointers

Stringforces

binary search, bitmasks, brute force, dp, strings, two pointers

MinimizOR

bitmasks, brute force, data structures, divide and conquer, greedy, implementation, two pointers

Complete the MST

bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees

Sanae and Giant Robot

binary search, brute force, data structures, dsu, greedy, sortings

Strange Shuffle

binary search, brute force, constructive algorithms, interactive

Yurii Can Do Everything

binary search, bitmasks, brute force, constructive algorithms, divide and conquer, two pointers

XOR Triangle

bitmasks, brute force, constructive algorithms, dp, greedy, math

Bash Plays with Functions

brute force, combinatorics, dp, number theory

Expected diameter of a tree

binary search, brute force, dfs and similar, dp, sortings, trees

Rollbacks (Easy Version)

brute force, data structures, dfs and similar, trees

Swapping Problem

brute force, constructive algorithms, data structures, sortings

Removing Graph

brute force, dp, games, graphs, math

LCM Sum (hard version)

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

Almost Fault-Tolerant Database

brute force, constructive algorithms, dfs and similar, greedy, implementation

ANDfinity

bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs

Nene vs. Monsters (Easy Version)

brute force, implementation, math

Summer Earnings

binary search, bitmasks, brute force, geometry, sortings

Text Editor

brute force, dp, greedy, strings

Cats on the Upgrade (easy version)

brute force, data structures, dfs and similar, divide and conquer, dp, graphs, trees

Curious Array

brute force, combinatorics, implementation, math

Narrow Components

brute force, data structures, dp, dsu, math, trees

Lottery

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

Doremy's Experimental Tree

brute force, constructive algorithms, dfs and similar, dsu, sortings, trees

Smooth Sailing (Easy Version)

binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths

Peterson Polyglot

brute force, dfs and similar, dsu, hashing, strings, trees

Dividing Kingdom II

brute force, data structures, dsu, graphs, sortings

Algebra Flash

bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees

Balancing Weapons

binary search, brute force, data structures, math, two pointers

The Neutral Zone

brute force, math

Brukhovich and Exams

brute force, greedy, implementation, math, sortings

Serval and Music Game

brute force, dp, implementation, math, number theory

Hossam and a Letter

brute force, dp, implementation, two pointers

Function Sum

brute force, combinatorics, dp, fft, math

Multiset of Strings

bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees

Perun, Ult!

brute force, greedy, sortings

Typewriter

brute force, math

Fetch the Treasure

brute force, data structures, graphs, shortest paths

Polycarpus the Safecracker

brute force, dp

Interactive Factorial Guessing

brute force, games, implementation, interactive

A Story of One Country (Easy)

brute force, divide and conquer, sortings

Azembler

brute force, implementation

Igor and Interesting Numbers

brute force, combinatorics, dp, math

Dividing Kingdom

binary search, brute force, data structures

Rhombus

brute force, data structures, dp

Savior

brute force, dsu, math

Digits

brute force, implementation, math

Shaass and Painter Robot

brute force, implementation, number theory

Cycle

brute force, dfs and similar, implementation

Interactive Bulls and Cows (Hard)

brute force, constructive algorithms, interactive

Two Circles

brute force, data structures, implementation

Lift and Throw

brute force

Machine Learning

brute force, data structures

Binary Table

bitmasks, brute force, divide and conquer, dp, fft, math

Ehab's REAL Number Theory Problem

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

Lizards and Basements 2

brute force, dp

Rebrending

brute force, data structures, divide and conquer, implementation

Palindrome Partition

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

Mathematics Curriculum

brute force, combinatorics, dp, trees

Twin Clusters

bitmasks, brute force, constructive algorithms, math, probabilities

Bring Balance

brute force, constructive algorithms, greedy

Mercenaries

bitmasks, brute force, combinatorics, dp, dsu, math, two pointers

Tree Recovery

brute force, constructive algorithms, dfs and similar, dsu, graphs, trees

Serega the Pirate

brute force, constructive algorithms

Wise Men (Easy Version)

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

Survival of the Weakest (easy version)

binary search, brute force, implementation, math, sortings

Playoff Restoration

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

Matrix Sorting

bitmasks, brute force, constructive algorithms, greedy, two pointers

Vika and Stone Skipping

brute force, implementation, math, number theory

Min Cost Permutation (Easy Version)

brute force, constructive algorithms, greedy, math

Vova Escapes the Matrix

brute force, dfs and similar, divide and conquer, shortest paths

Intriguing Selection

brute force, constructive algorithms, implementation, interactive, sortings

Timofey and remoduling

brute force, implementation, math, number theory

Too Much Money

brute force, greedy

Cutting Rectangle

brute force, math, number theory

Limak and Shooting Points

brute force, geometry, math

Sum of Matchings

brute force, combinatorics, constructive algorithms, dfs and similar, graph matchings, greedy, math

Dasha and cyclic table

bitmasks, brute force, fft, strings, trees

Kay and Eternity

brute force, implementation, sortings

GCD is Greater

brute force, data structures, math, number theory

Scissors

brute force, strings

Field Should Not Be Empty

brute force, data structures, divide and conquer

Candies for Children

brute force, math

Dasha and Photos

brute force, data structures, dp, implementation

Brand New Problem

bitmasks, brute force, dp

The Last Hole!

brute force, geometry