The Wu

bitmasks, brute force, data structures

Numerical Sequence (easy version)

binary search, brute force, math

Good Triple

brute force, two pointers

Sum of Progression

brute force, data structures, dp, implementation, math

Unlucky Numbers

brute force, dp, greedy, implementation

Suspicious logarithms

binary search, brute force, math

Vasilije Loves Number Theory

brute force, math, number theory

Li Hua and Tree

brute force, data structures, dfs and similar, dp, implementation, trees

Lonely Mountain Dungeons

brute force, data structures, greedy, math, ternary search

Koa and the Beach (Easy Version)

brute force, dp, greedy

Fish Graph

brute force, constructive algorithms, dfs and similar, graphs

Palindromic characteristics

brute force, dp, hashing, strings

White Lines

brute force, data structures, dp, implementation, two pointers

Amr and Chemistry

brute force, graphs, greedy, math, shortest paths

Birthday Gift

bitmasks, brute force, constructive algorithms, greedy, implementation

Arthur and Table

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

Hexagons

brute force, constructive algorithms, greedy, implementation, math, shortest paths

Checkpoints

brute force, constructive algorithms, greedy, math, probabilities

Archaeology

brute force, constructive algorithms, greedy, strings

Survey in Class

brute force, data structures, greedy, implementation, sortings

Vanya and Triangles

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

Up the Strip

brute force, dp, math, number theory, two pointers

Black Cells

binary search, brute force, greedy, math

Half of Same

brute force, math, number theory

Pavel and Triangles

brute force, dp, fft, greedy, ternary search

Two Small Strings

brute force, constructive algorithms

Asterism (Easy Version)

binary search, brute force, combinatorics, math, number theory, sortings

Complete Tripartite

brute force, constructive algorithms, graphs, hashing, implementation

Array Repetition

binary search, brute force, dsu, implementation, math

Unusual Matrix

2-sat, brute force, constructive algorithms

Necklace Assembly

brute force, dfs and similar, dp, graphs, greedy, number theory

Fox And Jumping

bitmasks, brute force, dp, math

Berserk Monsters

brute force, data structures, dsu, implementation, math

Need for Pink Slips

bitmasks, brute force, dfs and similar, implementation, math, probabilities

Divisible Numbers (hard version)

brute force, math, number theory

Vanya and Scales

brute force, dp, greedy, math, meet-in-the-middle, number theory

Array Stabilization (GCD version)

binary search, brute force, data structures, divide and conquer, number theory, two pointers

Perform Easily

binary search, brute force, dp, implementation, sortings, two pointers

Difference Array

brute force, data structures, implementation, sortings

Beautiful Sequence

brute force, constructive algorithms, greedy

Nearest Beautiful Number (easy version)

binary search, bitmasks, brute force, constructive algorithms, dfs and similar, greedy

Education

brute force, dp, greedy, implementation

Shortest Cycle

bitmasks, brute force, graphs, shortest paths

Beautiful Array

brute force, data structures, divide and conquer, dp, greedy

K-periodic Garland

brute force, dp, greedy

Dr. Evil Underscores

bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees

Maximum Subsequence Value

brute force, constructive algorithms

Not Adding

brute force, dp, math, number theory

The Best Vacation

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

Replace by MEX

brute force, constructive algorithms, sortings

Zigzags

brute force, combinatorics, data structures, math, two pointers

Ali goes shopping

*special problem, brute force, strings

Prime Segment

*special problem, brute force, math, number theory

Sweepstake

*special problem, brute force, constructive algorithms, implementation, math

Игра в Девятку I

*special problem, brute force, dp

Three-dimensional Turtle Super Computer

brute force, dfs and similar, graphs

Dark Assembly

brute force, probabilities

Programming Language

binary search, brute force, expression parsing, implementation

One-Based Arithmetic

brute force, dfs and similar, divide and conquer

Football Championship

brute force, implementation

New Year Cards

brute force, greedy, implementation

Very Interesting Game

brute force, number theory

Palindromic Cut

brute force, implementation, strings

Unsorting Array

brute force, sortings

Inversions problem

brute force, dfs and similar, dp, meet-in-the-middle

Game

brute force, dp, implementation

Trees

brute force

4-point polyline

brute force, constructive algorithms, geometry, trees

Bitwise Formula

bitmasks, brute force, dfs and similar, expression parsing, implementation

Vasily the Bear and Sequence

brute force, greedy, implementation, number theory

Divisible by Twenty-Five

brute force, dfs and similar, dp

Weird Chess

brute force, constructive algorithms, implementation

Math Show

brute force, greedy

The Feast and the Bus

brute force, constructive algorithms, greedy, math

Four Segments

brute force, data structures, dp

Jerry's Protest

brute force, combinatorics, dp, probabilities

Little Artem and Dance

brute force, constructive algorithms, implementation

My pretty girl Noora

brute force, dp, greedy, math, number theory

Connect the Points

brute force, constructive algorithms, geometry

Bus Number

brute force, combinatorics, math

Travelling Salesman and Special Numbers

brute force, combinatorics, dp

Sum over all Substrings (Easy Version)

brute force, dp, greedy, strings

Fight the Monster

binary search, brute force, implementation

ZgukistringZ

brute force, constructive algorithms, implementation, strings

Jon Snow and his Favourite Number

brute force, dp, implementation, sortings

The Golden Age

brute force, math

Circus

brute force, greedy, math, strings

Toy Train

brute force, greedy

Gennady the Dentist

brute force, implementation

View Angle

brute force, geometry, math

Array and Segments (Easy version)

brute force, greedy, implementation

Inversion Counting

brute force, math

Too Easy Problems

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

Many Perfect Squares

brute force, math, number theory

Cyclic Operations

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

Magic Will Save the World

binary search, bitmasks, brute force, dp

Compressed Bracket Sequence

brute force, implementation

Xor-Subsequence (easy version)

bitmasks, brute force, dp, strings, trees, two pointers

Molly's Chemicals

binary search, brute force, data structures, implementation, math

Integral Array

brute force, constructive algorithms, data structures, math