Arrow Path

brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths

Sasha and the Casino

binary search, brute force, constructive algorithms, games, greedy, math

StORage room

bitmasks, brute force, constructive algorithms, greedy

Insert and Equalize

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

Sets and Union

bitmasks, brute force, constructive algorithms, greedy

Flipper

brute force, constructive algorithms, greedy

Unforgivable Curse (hard version)

brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings

Unforgivable Curse (easy version)

brute force, constructive algorithms, dsu, graphs, greedy, strings

Equalize by Divide

brute force, constructive algorithms, greedy, math

Sum of Substrings

brute force, constructive algorithms, greedy, math, strings

Column Swapping

brute force, constructive algorithms, greedy, implementation, sortings

Twist the Permutation

brute force, constructive algorithms, implementation, math

Madoka and the Elegant Gift

brute force, constructive algorithms, graphs, implementation

Factorials and Powers of Two

bitmasks, brute force, constructive algorithms, dp, math

Mocha and Diana (Easy Version)

brute force, constructive algorithms, dsu, graphs, greedy, trees

Coin Rows

brute force, constructive algorithms, dp, implementation

Prinzessin der Verurteilung

brute force, constructive algorithms, strings

Minimum Ties

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

Sage's Birthday (hard version)

binary search, brute force, constructive algorithms, greedy, sortings, two pointers

Stairs

brute force, constructive algorithms, greedy, implementation, math

Binary String Reconstruction

2-sat, brute force, constructive algorithms, greedy

Codeforces Subsequences

brute force, constructive algorithms, greedy, math, strings

Composite Coloring

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

String Modification

brute force, constructive algorithms, implementation, sortings, strings

Longest Palindrome

brute force, constructive algorithms, greedy, implementation, strings

New Year and the Treasure Geolocation

brute force, constructive algorithms, greedy, implementation

Row

brute force, constructive algorithms

Three Garlands

brute force, constructive algorithms

Qualification Rounds

bitmasks, brute force, constructive algorithms, dp

Parallelogram is Back

brute force, constructive algorithms, geometry

Vladik and fractions

brute force, constructive algorithms, math, number theory

Mike and Cellphone

brute force, constructive algorithms, implementation

Restoring Painting

brute force, constructive algorithms, math

Amity Assessment

brute force, constructive algorithms, implementation

Promocodes with Mistakes

*special problem, brute force, constructive algorithms, implementation

A Trivial Problem

brute force, constructive algorithms, math, number theory

Alice, Bob, Two Teams

brute force, constructive algorithms

Removing Columns

brute force, constructive algorithms, implementation

Secret Combination

brute force, constructive algorithms, implementation

Towers

brute force, constructive algorithms, greedy, implementation, sortings

Fedor and New Game

bitmasks, brute force, constructive algorithms, implementation

A + B Strikes Back

*special problem, brute force, constructive algorithms, dsu, implementation

Searching for Graph

brute force, constructive algorithms, graphs

Array

brute force, constructive algorithms, implementation

Mountain Scenery

brute force, constructive algorithms, implementation

Kalevitch and Chess

brute force, constructive algorithms