Number of Ways

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

Wonder Room

brute force, math

Restore Cube

brute force, geometry

Caisa and Tree

brute force, dfs and similar, math, number theory, trees

Caisa and Pylons

brute force, implementation, math

Caisa and Sugar

brute force, implementation

Appleman and Easy Task

brute force, implementation

Roland and Rose

brute force, geometry, math, sortings

Little Victor and Set

brute force, constructive algorithms, math

Little Dima and Equation

brute force, implementation, math, number theory

Vasya and Socks

brute force, implementation, math

Elections

brute force

Little Pony and Harmony Chest

bitmasks, brute force, dp

4-point polyline

brute force, constructive algorithms, geometry, trees

Eevee

brute force, implementation, strings

Predict Outcome of the Game

brute force, implementation, math

Divisors

brute force, dfs and similar, implementation, number theory

Multiplication Table

binary search, brute force

DZY Loves Modification

brute force, data structures, greedy

Kolya and Tandem Repeat

brute force, implementation, strings

Borya and Hanabi

bitmasks, brute force, implementation

One-Based Arithmetic

brute force, dfs and similar, divide and conquer

Devu and Partitioning of the Array

brute force, constructive algorithms, implementation, number theory

Banners

brute force, data structures, dp

Special Grid

brute force, dp, greedy

Kitahara Haruki's Gift

brute force, implementation

Football Kit

brute force, greedy, implementation

Shower Line

brute force, implementation

Balls Game

brute force, two pointers

Sereja and Swaps

brute force, sortings

Biathlon Track

binary search, brute force, constructive algorithms, data structures, dp

Art Union

brute force, dp, implementation

A + B Strikes Back

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

Curious Array

brute force, combinatorics, implementation, math

Triangle

brute force, geometry, implementation, math

Searching for Graph

brute force, constructive algorithms, graphs

Trees in a Row

brute force, implementation

Roman and Numbers

bitmasks, brute force, combinatorics, dp, number theory

Inna and New Matrix of Candies

brute force, implementation, schedules

Physical Education and Buns

brute force, implementation, math

Counting Sticks

brute force, implementation

Supercollider

brute force

The Tournament

brute force

Word Folding

brute force

George and Round

brute force, greedy, two pointers

Fly, freebies, fly!

binary search, brute force, implementation

Bear and Prime Numbers

binary search, brute force, data structures, dp, implementation, math, number theory

Bear and Strings

brute force, greedy, implementation, math, strings

Bear and Raspberry

brute force, greedy, implementation

Sereja and Prefixes

binary search, brute force

New Year Letter

bitmasks, brute force, dp

Playing with Dice

brute force

Counting Rectangles is Fun

brute force, divide and conquer, dp

Hamburgers

binary search, brute force

Broken Monitor

brute force, constructive algorithms, greedy, implementation

Dima and Magic Guitar

brute force, implementation, math

Dima and To-do List

brute force, implementation

Ghd

brute force, math, probabilities

Beautiful Set

brute force, number theory

Two Circles

brute force, data structures, implementation

Fence

brute force, dp

Pair of Numbers

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

Dima and Kicks

brute force, dsu, graphs, implementation

Dima and Text Messages

brute force, strings

Dima and Continuous Line

brute force, implementation

Group of Students

brute force, greedy, implementation

Vasya and Beautiful Arrays

brute force, dp, number theory

Vasya and Robot

brute force, greedy, math

Jeff and Digits

brute force, implementation, math

Wrong Floyd

brute force, constructive algorithms, dfs and similar, graphs

TL

brute force, greedy, implementation

Subset Sums

brute force, data structures

Fixed Points

brute force, implementation, math

Simple Molecules

brute force, graphs, math

Pumping Stations

brute force, dfs and similar, divide and conquer, flows, graphs, greedy, trees

Xenia and Spies

brute force, greedy, implementation

Maximal Area Quadrilateral

brute force, geometry

Divisor Tree

brute force, number theory, trees

Vasily the Bear and Sequence

brute force, greedy, implementation, number theory

Rectangles and Square

brute force, dp

Summer Earnings

binary search, bitmasks, brute force, geometry, sortings

Characteristics of Rectangles

binary search, bitmasks, brute force, implementation, sortings

Lucky Tickets

brute force, constructive algorithms

Oh Sweet Beaverette

brute force, implementation

Cakeminator

brute force, implementation

Flipping Game

brute force, dp, implementation

Magic Numbers

brute force, greedy

Ants

brute force, implementation

Perfect Pair

brute force

Summer Homework

brute force, data structures

PE Lesson

brute force, dp

EKG

brute force, dfs and similar

Sereja and Bottles

brute force

Fetch the Treasure

brute force, data structures, graphs, shortest paths

Tennis Rackets

brute force, geometry

Continued Fractions

brute force, implementation, math

Strange Addition

brute force, constructive algorithms, implementation

Calendar

brute force, implementation

Pythagorean Theorem II

brute force, math

Minimum Modular

brute force, graphs, math, number theory