Short Code

data structures, dp, greedy, strings, trees

Pathwalks

data structures, dp, graphs

Alternating Tree

combinatorics, dfs and similar, divide and conquer, dp, probabilities, trees

Mahmoud and Ehab and yet another xor task

bitmasks, dp, math, matrices

Guard Duty (medium)

binary search, dp, greedy, sortings

Encryption (hard)

data structures, dp

Path Counting

combinatorics, dp

Runner's Problem

dp, matrices, sortings

Almost Increasing Array

data structures, dp

Fibonacci String Subsequences

combinatorics, dp, matrices

Cutlet

data structures, dp

Sleepy Game

dfs and similar, dp, games, graphs

Fafa and Ancient Mathematics

dfs and similar, dp, trees

Team Work

combinatorics, dp, math

Tree

binary search, dp, trees

Divisibility

constructive algorithms, dp, greedy, number theory

Birds

dp

Tanks

dp, greedy, implementation

Logical Expression

bitmasks, dp, shortest paths

New Year and Entity Enumeration

bitmasks, combinatorics, dp, math

New Year and Arbitrary Arrangement

dp, math, probabilities

Party

bitmasks, brute force, dp, graphs

Clear The Matrix

bitmasks, dp

Maximum Questions

data structures, dp, strings

Ralph and Mushrooms

dp, graphs

Connecting Vertices

dp, graphs

Maximum Element

combinatorics, dp, math

Packmen Strike Back

binary search, dp, math

Awards For Contestants

brute force, data structures, dp

Yet Another Minimization Problem

divide and conquer, dp

Huge Strings

bitmasks, brute force, dp, implementation, strings

Gotta Go Fast

binary search, dp

Third Month Insanity

dp, probabilities, trees

Masha and Cactus

dp, trees

Eleventh Birthday

combinatorics, dp, math

Similar Words

dp, hashing, strings, trees

Salazar Slytherin's Locket

bitmasks, dp

Michael and Charging Stations

binary search, dp, greedy

Casinos and travel

dp

Arpa and a game with Mojtaba

bitmasks, dp, games

Guards In The Storehouse

bitmasks, dp

On the Bench

combinatorics, dp

Leha and another game about graph

constructive algorithms, data structures, dfs and similar, dp, graphs

Winter is here

combinatorics, dp, math, number theory

Convex Countour

dp

Round Subset

dp, math

Roads in the Kingdom

dfs and similar, dp, graphs, trees

The Bakery

binary search, data structures, divide and conquer, dp, two pointers

String Compression

dp, hashing, string suffix structures, strings

Liar

binary search, dp, hashing, string suffix structures

Okabe and El Psy Kongroo

dp, matrices

Karen and Supermarket

brute force, dp, trees

Anthem of Berland

dp, strings

Selling Souvenirs

binary search, dp, greedy, ternary search

Expected diameter of a tree

binary search, brute force, dfs and similar, dp, sortings, trees

Send the Fool Further! (hard)

dfs and similar, dp, math, trees

Send the Fool Further! (medium)

dp, trees

Field expansion

brute force, dp, meet-in-the-middle

Exam Cheating

binary search, dp

Police Stations

constructive algorithms, dfs and similar, dp, graphs, shortest paths, trees

Presents in Bankopolis

dp, graphs, shortest paths

Anton and School - 2

combinatorics, dp, math, number theory

Axel and Marston in Bitland

bitmasks, dp, graphs, matrices

Composing Of String

*special problem, dp

Vulnerable Kerbals

constructive algorithms, dp, graphs, math, number theory

Bear and Company

dp

Bear and Tree Jumps

dfs and similar, dp, trees

Game of Stones

bitmasks, dp, games

Jon and Orbs

dp, math, probabilities

Mahmoud and a xor trip

bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees

Tree Folding

dfs and similar, dp, greedy, implementation, trees

Maximum path

dp, greedy, implementation

Bash Plays with Functions

brute force, combinatorics, dp, number theory

Felicity's Big Secret Revealed

bitmasks, dp

Bacterial Melee

brute force, combinatorics, dp, string suffix structures

Vladik and chat

brute force, constructive algorithms, dp, implementation, strings

Igor and Interesting Numbers

brute force, combinatorics, dp, math

Hongcow Buys a Deck of Cards

bitmasks, brute force, dp

Vladik and cards

binary search, bitmasks, brute force, dp

Ostap and Tree

dp, trees

Anton and Tree

dfs and similar, dp, trees

Funny Game

dp, games

Financiers Game

dp

Polycarp's problems

binary search, dp, greedy

Sonya and Problem Wihtout a Legend

dp, sortings

Memory and Scores

combinatorics, dp, math

Centroids

data structures, dfs and similar, dp, graphs, greedy, trees

Ant Man

dp, graphs, greedy

LRU

bitmasks, dp, math, probabilities

Legen...

data structures, dp, matrices, strings

Couple Cover

brute force, dp, number theory

The Wall (hard)

dp

Bear and Tower of Cubes

binary search, dp, greedy

Another Sith Tournament

bitmasks, dp, math, probabilities

Vanya and Balloons

binary search, brute force, dp, implementation

Vanya and Treasure

data structures, dp, graphs, shortest paths

Trains and Statistic

data structures, dp, greedy

Four Divisors

data structures, dp, math, number theory, sortings, two pointers

Fence Divercity

combinatorics, dp, number theory

Table Compression

dfs and similar, dp, dsu, graphs, greedy