Numbers Exchange

greedy, implementation, math

F1 Champions

implementation

Too Many Impostors (hard version)

constructive algorithms, implementation, interactive, math

Genetic Engineering

implementation, two pointers

The Maths Lecture

dp, implementation

Full Binary Tree Queries

brute force, implementation, trees

Colorful Points

data structures, greedy, implementation

Greedy Shopping

binary search, data structures, divide and conquer, greedy, implementation

Door Frames

greedy, implementation

Evolution of Weasels

greedy, implementation, strings

Spyke Chatting

implementation

Network Mask

*special problem, bitmasks, brute force, implementation

Train Maintenance

brute force, data structures, implementation

Points

implementation, math

Chain Reaction

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

Yet Another Inversions Problem

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

GukiZ and GukiZiana

binary search, data structures, implementation

Insertion Sort

data structures, dp, implementation, math

Alice and the Doll

brute force, data structures, greedy, implementation

Hockey

implementation, strings

Sum Queries?

data structures, greedy, implementation, math

Death Stars (easy)

implementation

Scrambled

*special problem, implementation

AmShZ and G.O.A.T.

binary search, brute force, greedy, implementation, math

Bulls and Cows

brute force, implementation

Bear and Up-Down

brute force, implementation

Mister B and PR Shifts

data structures, implementation, math

Diana and Liana

greedy, implementation, two pointers

International Olympiad

constructive algorithms, greedy, implementation, math

Non-Intersecting Subpermutations

combinatorics, dp, implementation, math

Biathlon

binary search, implementation

Nastya and a Game

brute force, implementation, math

Lightsabers (easy)

implementation

Chris and Road

geometry, implementation

Draw Brackets!

*special problem, implementation

Serval and Shift-Shift-Shift

bitmasks, brute force, constructive algorithms, implementation

Palindromic Cut

brute force, implementation, strings

Toda 2

greedy, implementation

Username

*special problem, implementation

Ants

brute force, implementation

ace5 and Task Order

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

Cubes

games, greedy, implementation

Fibonacci Additions

brute force, data structures, hashing, implementation, math

Olya and magical square

constructive algorithms, implementation, math

Hexagonal numbers

*special problem, implementation

Follow Traffic Rules

implementation, math

Restoring Increasing Sequence

binary search, brute force, greedy, implementation

WTF?

*special problem, graph matchings, implementation, trees

Cinema

implementation

Logging

implementation, strings

Permutation Sum

bitmasks, combinatorics, dp, implementation, meet-in-the-middle

Vasya's Function

binary search, implementation, math

Drazil Likes Heap

constructive algorithms, data structures, greedy, implementation

Noise Level

dfs and similar, implementation, math

Tesla

constructive algorithms, implementation

Walk the Runway

bitmasks, brute force, data structures, dp, graphs, implementation, sortings

Pacifist frogs

implementation

Travel Cards

greedy, implementation, sortings

New Year Cards

brute force, greedy, implementation

Washer, Dryer, Folder

greedy, implementation

Vlad and Avoiding X

bitmasks, brute force, dfs and similar, dp, implementation

Practice

constructive algorithms, divide and conquer, implementation

Rubik's Cube Coloring (hard version)

brute force, dp, implementation, math, trees

Divisors

brute force, dfs and similar, implementation, number theory

Зингер | color

*special problem, implementation

Plan of Lectures

constructive algorithms, dfs and similar, dsu, graphs, implementation, sortings, trees

st-Spanning Tree

dsu, graphs, greedy, implementation

Ehab and the Big Finale

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

Four Points

brute force, constructive algorithms, flows, geometry, greedy, implementation, math, ternary search

MinimizOR

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

Fractal

implementation

Vanya and Brackets

brute force, dp, expression parsing, greedy, implementation, strings

Red-Blue Matrix

brute force, constructive algorithms, implementation, sortings

Hit Ball

geometry, implementation, math

Police Patrol

greedy, implementation, math, ternary search

Возможно, вы знаете этих людей?

implementation

The Fox and the Complete Tree Traversal

constructive algorithms, dp, implementation, math, trees

Mastermind

constructive algorithms, graph matchings, greedy, implementation, sortings, two pointers

Sonya and Matrix

brute force, constructive algorithms, implementation

Vitaly and Advanced Useless Algorithms

dp, greedy, implementation

Brackets in Implications

constructive algorithms, greedy, implementation, math

New Year and Rainbow Roads

graphs, greedy, implementation

Chips

constructive algorithms, implementation

Blog Photo

binary search, implementation

Easy Tape Programming

brute force, implementation

Plane of Tanks: Pro

implementation

Robot Cleaner Revisit

implementation, math, probabilities

Oh Sweet Beaverette

brute force, implementation

Rectangle Puzzle II

implementation, math

Columns Swaps

2-sat, dfs and similar, dsu, graphs, implementation

Harry Potter and the History of Magic

brute force, greedy, implementation

Копирование файлов I

*special problem, brute force, implementation, math

Appleman and a Sheet of Paper

data structures, implementation

Exotic Queries

data structures, implementation, sortings

Queue in the Train

data structures, greedy, implementation

PermuTree (hard version)

bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees

Intersection

implementation, math

Treasure Island

brute force, implementation

Maximum path

dp, greedy, implementation

Geometry Horse

greedy, implementation, sortings, two pointers