Collaboration

*special problem

University Schedule

*special problem

Flower Shop

*special problem, data structures, fft, math

Demonic Invasion

*special problem, flows

Zero-XOR Array

*special problem, dp

Falling Blocks

*special problem, data structures

Paint the String

*special problem, dp, strings

Unusual Graph

*special problem, graphs

Good Subsets

*special problem, dp

Scissors and Tape

*special problem, constructive algorithms, geometry

Loader

*special problem

Game with Segments

*special problem, data structures, games

Cyclic Shifts

*special problem, strings

Road Repair in Treeland

*special problem, binary search, dp, trees

The Hero with Bombs

*special problem

Pac-Man 2.0

*special problem, dp

Build From Suffixes

*special problem, combinatorics, data structures

Longest Saw

*special problem, constructive algorithms

Chess Rush

*special problem, combinatorics, dp, implementation, math

Black Cat Rush

*special problem

Superstitions Inspection

*special problem

Hungarian Notation

*special problem

Different variables

*special problem

Rotate Matrix

*special problem

Non-decimal sum

*special problem

Interval Coloring

*special problem, greedy, math

Suffix Subgroup

*special problem, strings

Building Skyscrapers

*special problem

King's Path

*special problem, math, trees

INI-file

*special problem, implementation

Rogue-like Game

*special problem, brute force, greedy, two pointers

Truncatable primes

*special problem

Perse-script

*special problem, expression parsing

M-numbers

*special problem, dp, math

Graph Decomposition

*special problem, graphs

Euclidean Distance

*special problem

Battleship

*special problem, dfs and similar, implementation

Контрольная сумма

*special problem

Viruses

*special problem, dp, shortest paths, string suffix structures

Divisibility Check

*special problem

Alternating case

*special problem

Brackets

*special problem

Date Change

*special problem

Sort the Table

*special problem, sortings

Chain Letter

*special problem, dfs and similar, graphs

Composing Of String

*special problem, dp

Painting Numbers

*special problem, data structures, greedy, number theory

Caesar Cipher

*special problem

Roads

*special problem, geometry, sortings

Perfectionist Arkadiy

*special problem, number theory

Exchange of Books

*special problem

Name the album

*special problem, data structures, implementation

Pens And Days Of Week

*special problem, binary search, number theory

Feed the Golorp

*special problem

Greedy Petya

*special problem, dfs and similar, graphs, greedy

Mixture

*special problem, data structures, geometry, math, sortings

Oil

*special problem, greedy, math

Hamming Distance

*special problem

Levenshtein distance

*special problem

Jumping frogs

*special problem

Pairwise Sums

*special problem

Table Bowling

*special problem, sortings

Шардирование постов

*special problem, binary search, interactive

Path Canonization

*special problem

kotlinkotlinkotlinkotlin...

*special problem, graphs, implementation, strings

Wheels

*special problem, binary search, greedy

Movie Fan

*special problem, data structures, greedy, implementation, sortings

Primes in Interval

*special problem

Date calculation

*special problem

Number Deletion Game

*special problem, dp, games, greedy

Dogecoin

*special problem, *special problem, binary search, data structures

Polynom

*special problem, implementation

Two IP Cameras

*special problem, math, number theory

The Fraction

*special problem

Array Sum

*special problem

Counting Fridays

*special problem

Points in triangle

*special problem, geometry

Maximal Difference

*special problem

Triskaidekaphobia

*special problem

Quantum Classification - 2

*special problem

Array sorting

*special problem, sortings

Ali goes shopping

*special problem, brute force, strings

Reformat the String

*special problem

Quantum Classification - 1

*special problem

Neural Network Problem

*special problem, binary search, greedy

Binary notation

*special problem

Контрольная сумма

*special problem

Amusement Park

*special problem, dp, math

Caesar Cipher

*special problem

Lamps in a Line

*special problem, math

Factorial zeros

*special problem

Star Trek

*special problem, combinatorics, dfs and similar, dp, games, graphs, matrices, trees

Domain

*special problem, expression parsing

HQ

*special problem, constructive algorithms

Palindromic Doubles

*special problem, data structures, dp

Goshtasp, Vishtasp and Eidi

*special problem, greedy, math

HQ9+

*special problem

Array Sorting

*special problem

Double Permutation Inc.

*special problem, binary search, greedy

Eval

*special problem