The Cake Is a Lie

constructive algorithms, data structures, dfs and similar, graphs

Dog Show

constructive algorithms, data structures, greedy

Capitalism

constructive algorithms, dfs and similar, graphs, shortest paths

House Planning

constructive algorithms, data structures, graph matchings, greedy

Oolimry and Suffix Array

combinatorics, constructive algorithms, math

The Most Reckless Defense

bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths

Byteland, Berland and Disputed Cities

constructive algorithms, greedy

Journey

brute force, constructive algorithms, implementation

Blocking Chips

binary search, constructive algorithms, dfs and similar, greedy, trees

Tokens on Graph

constructive algorithms, dfs and similar, graphs, shortest paths

Valera and Swaps

constructive algorithms, dsu, graphs, implementation, math, string suffix structures

Before Exam

constructive algorithms, implementation, sortings

Road Widening

constructive algorithms, greedy, implementation

Sergey's problem

constructive algorithms, graphs

Numbers

constructive algorithms, implementation

Conveyor

constructive algorithms, dp, math

Idempotent functions

constructive algorithms, graphs, math

Любимые числа Поликарпа

constructive algorithms, implementation

X-OR

bitmasks, constructive algorithms, divide and conquer, interactive, probabilities

Seating of Students

brute force, constructive algorithms, math

Restore Array

constructive algorithms

The penguin's game

binary search, constructive algorithms, interactive

Coloring

brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math

ANDfinity

bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs

Add on a Tree: Revolution

constructive algorithms, dfs and similar, implementation, trees

Lock Puzzle

constructive algorithms, implementation, strings

Picking Strings

constructive algorithms, implementation, strings

City Union

constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math

Connectivity Addicts

constructive algorithms, dsu, graphs, greedy, interactive, shortest paths, trees

Decreasing Game

constructive algorithms, dfs and similar, dp, greedy, interactive

Start of the session

constructive algorithms

Almost Fault-Tolerant Database

brute force, constructive algorithms, dfs and similar, greedy, implementation

Interactive Bulls and Cows (Easy)

brute force, constructive algorithms, implementation

Dima and Horses

combinatorics, constructive algorithms, graphs

Interactive Game with Coloring

brute force, constructive algorithms, dfs and similar, graphs, implementation, interactive, trees

Vulnerable Kerbals

constructive algorithms, dp, graphs, math, number theory

Swapping Problem

brute force, constructive algorithms, data structures, sortings

Dividing Island

constructive algorithms

Xorcerer's Stones

bitmasks, constructive algorithms, dp, trees

Defender of Childhood Dreams

bitmasks, constructive algorithms, divide and conquer

Compartments

combinatorics, constructive algorithms, greedy, implementation

Restore the Permutation by Sorted Segments

brute force, constructive algorithms, data structures, greedy, implementation

Собери стол

constructive algorithms, sortings

Continuous City

bitmasks, constructive algorithms

Multiple Lamps

bitmasks, brute force, constructive algorithms, math, number theory

Madhouse (Easy version)

brute force, constructive algorithms, interactive, math

Cyclic Shifts Sorting

brute force, constructive algorithms, implementation, sortings

Running in Pairs

constructive algorithms, greedy, math

Point Ordering

constructive algorithms, geometry, interactive, math

Cross-Language Program

*special problem, constructive algorithms

Ideal Farm

constructive algorithms, math

Xum

bitmasks, constructive algorithms, math, matrices, number theory

Boring Partition

constructive algorithms

The Struggling Contestant

constructive algorithms, greedy

Construct Matrix

constructive algorithms, math

XOR Triangle

bitmasks, brute force, constructive algorithms, dp, greedy, math

Anton and School

bitmasks, constructive algorithms, implementation, math

Big Secret

constructive algorithms, math

Yurii Can Do Everything

binary search, bitmasks, brute force, constructive algorithms, divide and conquer, two pointers

Job Lookup

constructive algorithms, dp, shortest paths, trees

What Is It?

constructive algorithms, greedy

Strange Shuffle

binary search, brute force, constructive algorithms, interactive

Double Knapsack

constructive algorithms, two pointers

Merge Not Sort

constructive algorithms, dp

Black and White Tree

constructive algorithms, dsu, graphs, greedy, trees

New Roads

constructive algorithms, graphs, trees

Zero-One

constructive algorithms, games, greedy

Below the Diagonal

constructive algorithms, greedy, math

I Wanna be the Team Leader

bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers

Axis Walking

bitmasks, combinatorics, constructive algorithms, dp, meet-in-the-middle

Oranges and Apples

constructive algorithms, sortings

Graph Subset Problem

constructive algorithms, data structures, graphs

Chips

constructive algorithms, implementation

Karen and Test

brute force, combinatorics, constructive algorithms, math

Joking (Easy Version)

binary search, constructive algorithms, interactive, ternary search

Set Theory

brute force, constructive algorithms

GCD of Polynomials

constructive algorithms, math

Brackets in Implications

constructive algorithms, greedy, implementation, math

King's Puzzle

constructive algorithms

Interactive Treasure Hunt

brute force, constructive algorithms, geometry, interactive, math

Johnny and Megan's Necklace

binary search, bitmasks, constructive algorithms, dfs and similar, dsu, graphs

It's a bird! No, it's a plane! No, it's AaParsa!

constructive algorithms, graphs, shortest paths

Mastermind

constructive algorithms, graph matchings, greedy, implementation, sortings, two pointers

Sonya and Matrix

brute force, constructive algorithms, implementation

Anton and Ira

constructive algorithms, greedy, math

The Fox and the Complete Tree Traversal

constructive algorithms, dp, implementation, math, trees

Red-Blue Matrix

brute force, constructive algorithms, implementation, sortings

Cost Equilibrium

combinatorics, constructive algorithms, math, sortings

Searching Rectangles

binary search, constructive algorithms, interactive

Pairs of Pairs

constructive algorithms, dfs and similar, graphs, greedy, trees

Four Points

brute force, constructive algorithms, flows, geometry, greedy, implementation, math, ternary search

Vika and Segments

constructive algorithms, data structures, geometry, two pointers

Folding Strip

constructive algorithms, greedy, strings

Ehab and the Big Finale

constructive algorithms, divide and conquer, graphs, implementation, interactive, trees

Decypher the String

bitmasks, chinese remainder theorem, constructive algorithms, interactive, math

Practice

constructive algorithms, divide and conquer, implementation

Plan of Lectures

constructive algorithms, dfs and similar, dsu, graphs, implementation, sortings, trees

Nice table

brute force, constructive algorithms, greedy, math

AND-MEX Walk

bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs

Beautiful Rectangle

brute force, combinatorics, constructive algorithms, data structures, greedy, math