Lucky Tree

dp, dsu, trees

Crime Management

dp, graphs, matrices

Arrangement

bitmasks, dp

Basketball Team

combinatorics, dp, math, probabilities

Buns

dp

Candies and Stones

divide and conquer, dp

Castle

dp, greedy, probabilities, sortings, trees

Buses

binary search, data structures, dp

Help Shrek and Donkey

dp, games, math, probabilities

Lucky Country

dp, dsu, graphs

Horse Races

dp, math

Lucky Numbers

dp, greedy

Lostborn

dp, math, number theory

Flags

dp, math, matrices

Widget Library

dp, expression parsing, graphs, implementation

Beautiful Road

dfs and similar, dp, dsu, graphs, implementation, sortings, trees

Interesting Game

dp, games, math

Genetic engineering

dp, string suffix structures, trees

Two Subsequences

bitmasks, dp

Numbers

dp, math, number theory

Two out of Three

dp

Pairs

dfs and similar, dp, dsu, graphs, implementation, trees

Password

bitmasks, dp, shortest paths

Beaver

data structures, dp, greedy, hashing, strings, two pointers

Beaver Game

dp, games, number theory

Domino Carpet

dp, implementation

Beavermuncher-0xFF

dfs and similar, dp, dsu, greedy, trees

Tourist

binary search, data structures, dp

Plus and xor

dp, greedy, math

Mutation

bitmasks, dp, math

Big Maximum Sum

data structures, dp, greedy, implementation, math, trees

Train

dp, games, greedy

LionAge II

dp

Fibonacci army

*special problem, dp

Nuclear Fusion

bitmasks, dp

Round Table Knights

dp, math, number theory

Information Reform

dp, implementation, trees

Dot

dp, games

Half-decay tree

data structures, divide and conquer, dp, math, probabilities

Optical Experiment

binary search, data structures, dp

Sequence of Balls

dp

Partial Teacher

dp, graphs, greedy, implementation

Petya and Post

data structures, dp

Sweets Game

bitmasks, dfs and similar, dp, games, implementation

World Evil

dp, flows

Expression

dp

Journey

dp, math

Changing a String

dp

Beautiful numbers

dp, number theory

Writing a Song

brute force, dp, strings

First Digit Law

dp, math, probabilities

Dead Ends

bitmasks, dp

Caterpillar

dfs and similar, dp, graphs, trees

Bombing

binary search, dp, probabilities

Common ancestor

dp

Game

brute force, dp, implementation

Galaxy Union

dp, trees, two pointers

Ivan the Fool VS Gorynych the Dragon

dp, games, graphs

Comb

data structures, dp

School

dp, dsu

Phone Number

dp

Anfisa the Monkey

dp

Pawn

dp

What Has Dirichlet Got to Do with That?

dp, games

Moon Craters

dp, sortings

The Great Marathon

dp

Smart Boy

dp, games, strings

Let's Go Rolling!

dp, sortings

Lesson Timetable

combinatorics, dp, math

Animals

dp, greedy

TV Game

dp

Shooting Gallery

dp, probabilities

Don't fear, DravDe is kind

binary search, data structures, dp, hashing

Bath Queue

combinatorics, dp, probabilities

Number With The Given Amount Of Divisors

brute force, dp, number theory

Broken robot

dp, math, probabilities

Tree

dp

Bargaining Table

brute force, dp

Stripe 2

binary search, dp, sortings

Checkout Assistant

dp

Flag 2

dp

Seller Bob

brute force, dp, greedy

Balance

dp

Fish

bitmasks, dp, probabilities

Triangles

combinatorics, dp

Camels

dp

Two Paths

dfs and similar, dp, graphs, shortest paths, trees, two pointers

Triangles

dp, geometry

Sequence

dp, sortings

Forward, march!

binary search, dp, greedy

A Simple Task

bitmasks, dp, graphs

LCIS

dp

Cinema Cashier

dp, implementation

How many trees?

combinatorics, divide and conquer, dp

Beads

dp, graphs

Looking for Order

bitmasks, dp

Defining Macros

dp, expression parsing, implementation

Lizards and Basements 2

brute force, dp

Longest Regular Bracket Sequence

constructive algorithms, data structures, dp, greedy, sortings, strings

Mysterious Present

dp, sortings