Friends and Presents

binary search, math

Masha and two friends

implementation

Number With The Given Amount Of Divisors

brute force, dp, number theory

Xenia and Spies

brute force, greedy, implementation

Paper Work

greedy

Hometask

greedy

Toy Train

brute force, greedy

Pictures with Kittens (easy version)

dp

Bus Game

greedy

Kilani and the Game

dfs and similar, graphs, implementation, shortest paths

Replace With Product

brute force, greedy, math

Zero-One (Hard Version)

dp, greedy

Batch Sort

brute force, greedy, implementation, math

Permutation Cycle

brute force, constructive algorithms

Roman and Numbers

bitmasks, brute force, combinatorics, dp, number theory

Happy Birthday

math

Kolya and Tandem Repeat

brute force, implementation, strings

Split Plus K

greedy, math, number theory

Garland

dfs and similar, graphs, greedy, trees

The Winter Hike

constructive algorithms, greedy, math

Yet Another Problem On a Subsequence

combinatorics, dp

Two Arrays

binary search, brute force, combinatorics, constructive algorithms, dp, two pointers

XOR Equation

dp, math

Quantity of Strings

combinatorics, dfs and similar, graphs, math

Olya and Energy Drinks

data structures, dfs and similar, graphs, shortest paths

Football

constructive algorithms

Array Restoration

constructive algorithms, data structures

Dasha and Very Difficult Problem

binary search, brute force, constructive algorithms, greedy, sortings

Anton and Lines

geometry, sortings

Arthur and Table

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

Not a Geometry Problem

*special problem, *special problem, constructive algorithms, geometry, math

Masha-forgetful

brute force, constructive algorithms, dp, hashing, implementation, strings

Birthday Gift

bitmasks, brute force, constructive algorithms, greedy, implementation

Circus

brute force, greedy, math, strings

String Reconstruction

data structures, greedy, sortings, strings

Star

*special problem, combinatorics

Moving Points

data structures, divide and conquer, implementation, sortings

Mahmoud and Ehab and the xor

constructive algorithms

Present

binary search, bitmasks, constructive algorithms, data structures, math, sortings

Sequence Sorting

dp, greedy, two pointers

Secrets

greedy

Two Seals

brute force, implementation

White Lines

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

Amr and Chemistry

brute force, graphs, greedy, math, shortest paths

Tenzing and His Animal Friends

constructive algorithms, graphs, greedy

Dima and Sequence

implementation, math

We Need More Bosses

dfs and similar, graphs, trees

Watch the Videos

binary search, constructive algorithms, two pointers

Kate and imperfection

greedy, implementation, math, number theory, sortings, two pointers

Copying Data

data structures

Flying Saucer Segments

math

Painting the Array II

constructive algorithms, data structures, dp, greedy, implementation

Road Reform

dsu, graphs, greedy

Two Sets

2-sat, dfs and similar, dsu, graph matchings, greedy

Median Smoothing

implementation

Palindromic characteristics

brute force, dp, hashing, strings

Alice, Bob, Two Teams

brute force, constructive algorithms

Curiosity Has No Limits

Playing Piano

constructive algorithms, dp

Flag of Berland

brute force, implementation

Xor-MST

bitmasks, constructive algorithms, data structures

Anagram Search

implementation, strings

Two Squares

geometry, implementation

Maximum Distance

dsu, graphs, shortest paths, sortings

Maximum Subarray

data structures, dp, greedy, two pointers

Shuffle

combinatorics, math, two pointers

Dima and Hares

dp, greedy

Cleaning

data structures, dp, greedy, math

Yet Another Division Into Teams

dp, greedy, sortings

Counting Rhombi

brute force, math

Babaei and Birthday Cake

data structures, dp

Jzzhu and Chocolate

greedy, math

Reverse Sort Sum

constructive algorithms, data structures, greedy, implementation, math, two pointers

Fun with Integers

dfs and similar, graphs, implementation, math

Potions Homework

implementation, sortings

Hanoi Factory

brute force, data structures, dp, greedy, sortings

Boring Segments

data structures, sortings, trees, two pointers

Error Correct System

greedy

Martian Dollar

brute force

Valid Sets

dfs and similar, dp, math, trees

Pattern

implementation, strings

Fish Graph

brute force, constructive algorithms, dfs and similar, graphs

Road to Cinema

binary search, greedy, sortings

What is for dinner?

greedy, implementation

Find Color

constructive algorithms, geometry, implementation, math

Koa and the Beach (Easy Version)

brute force, dp, greedy

Cutting Figure

constructive algorithms, graphs, trees

Almost Sorted

binary search, combinatorics, constructive algorithms, implementation

Destroying Roads

constructive algorithms, graphs, shortest paths

Placing Jinas

combinatorics, math

Guess The Maximums

binary search, implementation, interactive, math

Number of Parallelograms

geometry

Lazyland

Unfair Poll

binary search, constructive algorithms, implementation, math

Subsequence Counting

bitmasks, constructive algorithms, greedy, implementation

Sereja and Swaps

brute force, sortings

Magic Stones

constructive algorithms, math, sortings

Average Numbers

brute force, implementation

Dynasty Puzzles

dp

Devu and Partitioning of the Array

brute force, constructive algorithms, implementation, number theory