Bananas in a Microwave

dfs and similar, dp, graphs, implementation

New Year and Arbitrary Arrangement

dp, math, probabilities

Not Escaping

data structures, dp, implementation, shortest paths, two pointers

In Search of Truth (Easy Version)

constructive algorithms, interactive, math, meet-in-the-middle, probabilities

Count Seconds

brute force, constructive algorithms, dp, graphs, implementation, math

Mocha and Stars

combinatorics, dp, fft, math, number theory

Domino Principle

binary search, data structures, sortings

Weights Division (hard version)

binary search, dfs and similar, greedy, sortings, trees, two pointers

Nezzar and Nice Beatmap

constructive algorithms, geometry, greedy, math, sortings

Yaroslav and Divisors

data structures

Two Types of Spells

binary search, data structures, greedy, implementation, math, sortings

Test

hashing, strings

Cars

2-sat, constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings

Moment of Bloom

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

Construct the Binary Tree

brute force, constructive algorithms, trees

Bear and Tower of Cubes

binary search, dp, greedy

Om Nom and Necklace

hashing, string suffix structures, strings

Playoff Fixing

combinatorics, trees

notepad.exe

binary search, constructive algorithms, greedy, interactive

Maximum Weight Subset

dp, trees

Match & Catch

dp, string suffix structures, strings

Tree Queries (Easy Version)

brute force, constructive algorithms, dfs and similar, dp, greedy, trees

Strictly Positive Matrix

graphs, math

Two Hundred Twenty One (hard version)

data structures, math

Little C Loves 3 II

brute force, constructive algorithms, flows, graph matchings

The minimal unique substring

constructive algorithms, math, strings

Water Level

brute force, graphs, greedy, implementation, math

Combinatorics Problem

brute force, combinatorics, dp

Cute Sequences

binary search, brute force, greedy, math

Sofia and Strings

data structures, greedy, sortings, strings, two pointers

Valera and Queries

binary search, data structures

Irrigation

binary search, data structures, implementation, sortings, trees, two pointers

LIS of Sequence

data structures, dp, greedy, hashing, math

Girl Permutation

combinatorics, dp, math, number theory

Birds

dp

Addition on Segments

bitmasks, data structures, divide and conquer, dp

Star MST

combinatorics, dp, graph matchings, math

Two chandeliers

binary search, brute force, chinese remainder theorem, math, number theory

Ants in Leaves

dfs and similar, greedy, sortings, trees

High Cry

binary search, bitmasks, combinatorics, data structures, divide and conquer

Robots on a Grid

data structures, dfs and similar, dsu, graphs, greedy, matrices

Let Them Slide

data structures, implementation

Valid Bitonic Permutations

combinatorics, dp, implementation, math, number theory

Serge and Dining Room

binary search, data structures, graph matchings, greedy, implementation, math, trees

Case of Chocolate

data structures

RPD and Rap Sheet (Hard Version)

brute force, constructive algorithms, interactive, math

Table Compression

dfs and similar, dp, dsu, graphs, greedy

Symmetree

dfs and similar, hashing, implementation, trees

Explosions?

binary search, data structures, dp, greedy, math

Short Colorful Strip

combinatorics, dfs and similar, dp

Another Sith Tournament

bitmasks, dp, math, probabilities

Palindrome-less Arrays

combinatorics, divide and conquer, dp

One-Way Reform

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

Fill the Matrix

data structures, greedy, math

Three Religions

dp, implementation, strings

Between

constructive algorithms, dfs and similar, graphs, greedy

X(or)-mas Tree

bitmasks, dfs and similar, dsu, graphs, trees

Two Houses

brute force, graphs, greedy, interactive, sortings

Math Test

bitmasks, brute force, greedy

Lieges of Legendre

games, math

Ela and the Wiring Wizard

brute force, dp, graphs, greedy, implementation, shortest paths

Prefix Function Queries

dfs and similar, dp, hashing, string suffix structures, strings, trees

The Number Games

data structures, greedy, trees

Pluses everywhere

combinatorics, dp, math, number theory

Rock Is Push

binary search, dp

Anton and Permutation

brute force, data structures

Dreamoon and Strings

dp, strings

Wrong Answer on test 233 (Easy Version)

dp

Two Bracket Sequences

dp, strings, two pointers

Equidistant Vertices

brute force, combinatorics, dfs and similar, dp, trees

Tests for problem D

constructive algorithms, dfs and similar, divide and conquer, trees

Lights

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

Count The Rectangles

bitmasks, brute force, data structures, geometry, sortings

Love Triangles

dfs and similar, dsu, graphs

The Game Of Parity

games

K and Medians

constructive algorithms, greedy, math

Railguns

brute force, dfs and similar, dp, graphs

Hamiltonian Spanning Tree

dfs and similar, dp, graph matchings, greedy, trees

Node Pairs

dp, graphs, math, number theory

The Maximum Subtree

dfs and similar, dp, graphs, trees

Edge Reverse

binary search, dfs and similar, graphs, trees

Kuro and GCD and XOR and SUM

binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees

The Maths Lecture

dp, implementation

List Of Integers

binary search, bitmasks, brute force, combinatorics, math, number theory

Hemose on the Tree

bitmasks, constructive algorithms, dfs and similar, trees

Train Maintenance

brute force, data structures, implementation

Tree

binary search, dp, trees

DIY Garland

constructive algorithms, greedy, trees

Professor GukiZ and Two Arrays

binary search, two pointers

Small Permutation Problem (Easy Version)

brute force, combinatorics, dp, math

Changing Brackets

constructive algorithms, data structures, dp, greedy

Ice cream coloring

constructive algorithms, dfs and similar, greedy

Memory and Scores

combinatorics, dp, math

Vlad and the Nice Paths (hard version)

binary search, combinatorics, data structures, dp, math, two pointers

Salazar Slytherin's Locket

bitmasks, dp

President and Roads

dfs and similar, graphs, hashing, shortest paths

Helping Hiasat

bitmasks, brute force, dp, meet-in-the-middle

Square Root of Permutation

combinatorics, constructive algorithms, dfs and similar, graphs, math

Chain Reaction

binary search, data structures, dsu, greedy, implementation, math, number theory

Little Pony and Summer Sun Celebration

constructive algorithms, dfs and similar, graphs