Special Problem

*special problem, brute force, games, interactive

You Are a Robot

*special problem, *special problem

Double Vision

*special problem

Anomaly

*special problem, communication

Numbers

*special problem

Shortest Paths

*special problem, shortest paths

Neural Feud

*special problem, strings

And?

*special problem, bitmasks

Are You Smiling?

*special problem, *special problem, *special problem, strings

Odd One Out

*special problem, graph matchings, implementation

Strange Process

*special problem

Sum of MEX

*special problem, combinatorics, data structures, dp, math

Jammer

*special problem, math

Self-Produced Sequences

*special problem, combinatorics, math

Supersequence

*special problem, binary search, greedy

Two Arrays

*special problem, math

Minesweeper

*special problem, constructive algorithms, greedy

Two Towers

*special problem, greedy, math

Game

*special problem

Color the Tree

*special problem

Merging Vertices in a Graph

*special problem, dfs and similar, dsu, graphs

Good Robot Paths

*special problem, data structures, geometry, sortings

Array Reduction

*special problem, greedy

Perfect Cut

*special problem, dp, greedy

Avoid Minimums

*special problem, greedy, math

Minimum on Subarrays

*special problem, brute force

Games

*special problem, greedy

Furniture Store

*special problem, implementation

Premiere at a Wrong Time

*special problem

Mysterious Script

*special problem, expression parsing, number theory

Blurry Vision

*special problem, fft, math

Definitely a Geometry Problem

*special problem, geometry

⅓ оf а Рrоblеm

*special problem, math

Pair Count

*special problem, number theory

Where Am I?

*special problem, geometry

Would It Be Unrated?

*special problem, binary search, brute force

Plinko

*special problem, games, interactive

Piecing It Together

*special problem, string suffix structures

Hamiltonian Partition

*special problem, *special problem

Nim with Special Numbers

*special problem, *special problem

Esports in Berland

*special problem, *special problem, greedy, greedy

Weapon Upgrade

*special problem, *special problem, dp

Color the Arrows

*special problem, *special problem, dp, dp

Uppercase or Lowercase?

*special problem, *special problem, interactive

Coin Game

*special problem, greedy

Showmatch

*special problem

Password Generator

*special problem

Order Statistics

*special problem, binary search

Card Flip

*special problem

Best Runner

*special problem

Strong Connectivity Strikes Back

*special problem, constructive algorithms, graphs

Cute Subsequences

*special problem, sortings

Dreaming Is Not Harmful

*special problem

Arithmetic Exercise

*special problem, data structures, dp, greedy

Alice, Bob, And Two Arrays

*special problem, data structures, dp, games

Stack and Queue

*special problem, data structures, divide and conquer

Strange Matrix

*special problem, graphs, greedy

Removal of a Permutation

*special problem

Good Subarray

*special problem, data structures, greedy

Rock-Paper-Scissors Bot

*special problem, greedy, strings

Among Wolves

*special problem

Split the Expression

*special problem

Shuffle

*special problem

Problem Solving

*special problem

Necromancer

*special problem

Equal Trees

*special problem, graphs, meet-in-the-middle

Composite Spells

*special problem, dp

Observation Towers

*special problem

Narrow Paths

*special problem, combinatorics

Yet Another Permutation Constructive

*special problem, constructive algorithms

Staircase

*special problem

Firewood

*special problem

Clock in the Pool

*special problem, math

1-3-5

*special problem, dp

Accuracy-Preserving Summation Algorithm

*special problem

Help, what does it mean to be "Based"

*special problem, brute force, constructive algorithms, expression parsing, implementation, sortings

Dark Matter

*special problem, bitmasks, geometry

Palindrome

*special problem, implementation, strings

Mathematician Takeover

*special problem, binary search, dfs and similar, math

Grid

*special problem, brute force

Sweep Line

*special problem, combinatorics, games, math

Are You a Procrastinator?

*special problem, implementation

They Have Fooled

*special problem, brute force, schedules

Is it stated?

*special problem, strings

Are You a Robot, Again?

*special problem, strings

Almost Certainly

*special problem, constructive algorithms, data structures, sortings

Burenka and Pether

*special problem, data structures, dfs and similar, divide and conquer, dsu, graphs, sortings, trees

Three Arrays

*special problem, constructive algorithms, implementation, sortings

Parallel Universes

*special problem, constructive algorithms, dfs and similar, dsu, graphs

Big Persimmon

*special problem, dp, games

More Gifts

*special problem, dfs and similar, two pointers

Evidence Board

*special problem, constructive algorithms, dfs and similar, graphs, trees

Draw Polygon Lines

*special problem, constructive algorithms, dp, geometry, interactive

Two Colors

*special problem

Inverse Problem

*special problem, combinatorics, dp

Sum of Digits of Sums

*special problem, binary search, data structures

Pool Records

*special problem, greedy

Build Railway Stations

*special problem, greedy, trees

Maximum Sum Subarrays

*special problem, dp

Remove and Add

*special problem, greedy