Three-dimensional Turtle Super Computer

brute force, dfs and similar, graphs

Road Improvement

*special problem, dfs and similar, graphs, greedy, trees

Turn

geometry, math

Jerry's Protest

brute force, combinatorics, dp, probabilities

Graph and String

constructive algorithms, graphs

The Union of k-Segments

greedy, sortings

Harmony Analysis

constructive algorithms

Moodular Arithmetic

combinatorics, dfs and similar, dsu, math, number theory

Make Palindrome

constructive algorithms, greedy, strings

The Big Race

math

Gennady the Dentist

brute force, implementation

Dima and Lisa

brute force, math, number theory

Kefa and Dishes

bitmasks, dp

Bots

combinatorics, dp, math, number theory

ZgukistringZ

brute force, constructive algorithms, implementation, strings

Writing Code

dp

Weird Chess

brute force, constructive algorithms, implementation

Correcting Mistakes

constructive algorithms, dp, greedy, hashing, strings, two pointers

Clique Problem

data structures, dp, greedy, implementation, sortings

A and B and Interesting Substrings

data structures, dp, two pointers

Inversions problem

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

Permutations

bitmasks, divide and conquer, math

Vanya and Computer Game

binary search, implementation, math, sortings

Fight the Monster

binary search, brute force, implementation

Friends and Presents

binary search, math

Interesting Array

constructive algorithms, data structures, trees

Table Decorations

greedy

MUH and Cube Walls

string suffix structures, strings

Hexakosioihexekontahexaphobia

*special problem

Pashmak and Parmida's problem

data structures, divide and conquer, sortings

4-point polyline

brute force, constructive algorithms, geometry, trees

Multiplication Table

binary search, brute force

Andrey and Problem

greedy, math, probabilities

One-Based Arithmetic

brute force, dfs and similar, divide and conquer

Dungeons and Candies

dsu, graphs, greedy, trees

Ryouko's Memory Note

implementation, math, sortings

Prime Swaps

greedy, sortings

Online Meeting

implementation

Dome

*special problem

Restore Graph

dfs and similar, graphs, sortings

Upgrading Array

dp, greedy, math, number theory

Vessels

data structures, dsu, implementation, trees

Mittens

constructive algorithms, greedy, sortings

Renting Bikes

binary search, greedy

Dima and Hares

dp, greedy

Jeff and Rounding

dp, greedy, implementation, math

Vasily the Bear and Sequence

brute force, greedy, implementation, number theory

Chips

greedy

IQ Test

implementation

Stadium and Games

binary search, math

Yaroslav and Sequence

constructive algorithms

Beautiful Numbers

brute force, combinatorics

Maximum Xor Secondary

data structures, implementation, two pointers

Zero Tree

dfs and similar, dp, greedy, trees

Good Substrings

data structures, strings

Cycle in Graph

dfs and similar, graphs

View Angle

brute force, geometry, math

Mr. Bender and Square

binary search, implementation, math

Anagram

greedy, strings

Unsorting Array

brute force, sortings

Playing with Permutations

implementation, math

Queries for Number of Palindromes

dp, hashing, strings

King's Path

dfs and similar, graphs, hashing, shortest paths

Boring Partition

constructive algorithms

Fence

dp

Reducing Fractions

implementation, math, number theory, sortings

Little Elephant and Array

constructive algorithms, data structures

Hiring Staff

greedy

The Beaver's Problem - 3

The Beaver's Problem - 3

Beaver's Calculator 1.0

greedy

Guess That Car!

math, ternary search

Programming Language

binary search, brute force, expression parsing, implementation

Football Championship

brute force, implementation

Try and Catch

expression parsing, implementation

Surrounded

geometry

Stack

*special problem, expression parsing, implementation

AlgoRace

dp, shortest paths

Mushroom Scientists

math, ternary search

Wooden Fence

dp

Cubes

binary search, dp, two pointers

Defragmentation

implementation

Representative Sampling

Greedy Merchants

Script Generation

Range Increments

data structures, greedy

Chamber of Secrets

dfs and similar, shortest paths

Wizards and Huge Prize

dp, math, probabilities

Brackets

*special problem

Alternating case

*special problem

Factorial zeros

*special problem

HQ9+

*special problem

Prime factorization

*special problem

Binary notation

*special problem

Distance in Tree

dfs and similar, dp, trees

Binary notation

*special problem

Bag of mice

dp, games, math, probabilities

Lucky Number 2

constructive algorithms

Help General

constructive algorithms, greedy, implementation

Queue

constructive algorithms, greedy, sortings