Little C Loves 3 II

brute force, constructive algorithms, flows, graph matchings

Tree Queries (Easy Version)

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

notepad.exe

binary search, constructive algorithms, greedy, interactive

Construct the Binary Tree

brute force, constructive algorithms, trees

Moment of Bloom

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

Cars

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

The minimal unique substring

constructive algorithms, math, strings

Nezzar and Nice Beatmap

constructive algorithms, geometry, greedy, math, sortings

Count Seconds

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

In Search of Truth (Easy Version)

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

Kill Anton

brute force, constructive algorithms, data structures, math, strings

Figure Fixing

constructive algorithms, dfs and similar, dsu, graphs, greedy, math

Happy Line

constructive algorithms, greedy, sortings

Equal Binary Subsequences

constructive algorithms, geometry, greedy, implementation, strings

K-th Path

brute force, constructive algorithms, shortest paths, sortings

Koa and the Beach (Hard Version)

constructive algorithms, dp, greedy, implementation

New Game Plus!

constructive algorithms, greedy, math

Prefixes and Suffixes

constructive algorithms, strings, two pointers

Sum of Digits

brute force, constructive algorithms, dp, greedy

Paired Payment

binary search, brute force, constructive algorithms, dp, flows, graphs, shortest paths

Guess the K-th Zero (Hard version)

binary search, constructive algorithms, data structures, interactive

Kuroni and the Score Distribution

constructive algorithms, greedy, implementation, math

Perfect Triples

bitmasks, brute force, constructive algorithms, divide and conquer, math

Salyg1n and Array (hard version)

constructive algorithms, interactive

Equal Tree Sums

constructive algorithms, dfs and similar, math, trees

Make It Increasing

binary search, constructive algorithms, data structures, dp, implementation

Three Sequences

constructive algorithms, data structures, greedy, math

Strange Housing

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

Magic Stones

constructive algorithms, math, sortings

Powerful Ksenia

bitmasks, constructive algorithms, math

Multiples and Power Differences

constructive algorithms, graphs, math, number theory

Tree Requests

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

Pixels

constructive algorithms, math

Arithmancy (Easy)

brute force, constructive algorithms, interactive, strings

Exact Neighbours (Medium)

constructive algorithms

Constants in the language of Shakespeare

constructive algorithms, dp, greedy

Broken Monitor

brute force, constructive algorithms, greedy, implementation

Polycarp's Picture Gallery

constructive algorithms, greedy

Kamal-ol-molk's Painting

brute force, constructive algorithms, greedy

The table

constructive algorithms, greedy

Valera and Swaps

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

Start of the session

constructive algorithms

Compartments

combinatorics, constructive algorithms, greedy, implementation

Job Lookup

constructive algorithms, dp, shortest paths, trees

Black and White Tree

constructive algorithms, dsu, graphs, greedy, trees

New Roads

constructive algorithms, graphs, trees

Below the Diagonal

constructive algorithms, greedy, math

Nice table

brute force, constructive algorithms, greedy, math

Tesla

constructive algorithms, implementation

Vladik and Favorite Game

constructive algorithms, dfs and similar, graphs, interactive

Invariance of Tree

constructive algorithms, dfs and similar, greedy, trees

Flawed Flow

constructive algorithms, flows, graphs, greedy

Permutation recovery

constructive algorithms, data structures, dfs and similar, graphs, greedy, math, sortings

Santa Claus and a Palindrome

constructive algorithms, data structures, greedy

Another Wine Tasting Event

combinatorics, constructive algorithms, math, strings

Down or Right

constructive algorithms, interactive, matrices

Autosynthesis

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

The Harmonization of XOR

bitmasks, constructive algorithms, greedy, math

Leha and another game about graph

constructive algorithms, data structures, dfs and similar, dp, graphs

Sand Fortress

binary search, constructive algorithms, math

Candy Party (Hard Version)

bitmasks, constructive algorithms, dp, greedy, implementation, math

Weird journey

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

Underground Lab

constructive algorithms, dfs and similar, graphs

Tree Constructing

constructive algorithms, graphs

String

brute force, constructive algorithms, hashing, implementation, string suffix structures, strings

Timofey and rectangles

constructive algorithms, geometry

Clique Partition

brute force, constructive algorithms, graphs, greedy, implementation

Domino (hard version)

constructive algorithms, implementation, math

ConstructOR

bitmasks, chinese remainder theorem, combinatorics, constructive algorithms, math, number theory

Berland Beauty

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

Rectangular Congruence

constructive algorithms, number theory

The LCMs Must be Large

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

Treelabeling

bitmasks, constructive algorithms, dfs and similar, games, greedy, implementation, trees

Mahmoud and a xor trip

bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees

Minimax

constructive algorithms, greedy, strings

Send Boxes to Alice (Hard Version)

constructive algorithms, greedy, math, number theory, ternary search, two pointers

MEX vs DIFF

binary search, brute force, constructive algorithms, data structures, greedy, two pointers

XOR Break --- Solo Version

bitmasks, constructive algorithms, greedy

Decryption

constructive algorithms, implementation, math, number theory

Points on Plane

constructive algorithms, divide and conquer, geometry, greedy, sortings

Omkar and Duck

bitmasks, constructive algorithms, interactive, math

Permutation Shift

brute force, combinatorics, constructive algorithms, dfs and similar, dsu, graphs, math

GCD Queries

constructive algorithms, interactive, number theory

Money Transfers

constructive algorithms, data structures, greedy, sortings

01 Tree

constructive algorithms, data structures, dsu, greedy, sortings, trees

Height All the Same

combinatorics, constructive algorithms, math, matrices

Challenges in school №41

brute force, constructive algorithms, games, graphs, greedy, implementation, sortings

Destroying Roads

constructive algorithms, graphs, shortest paths

Painting the Array II

constructive algorithms, data structures, dp, greedy, implementation

Present

binary search, bitmasks, constructive algorithms, data structures, math, sortings

Two Arrays

binary search, brute force, combinatorics, constructive algorithms, dp, two pointers

The Winter Hike

constructive algorithms, greedy, math

Ehab's Last Corollary

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

Nearest Beautiful Number (hard version)

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

Binary Median

binary search, bitmasks, brute force, constructive algorithms

Swaps Again

constructive algorithms, implementation, sortings

Binary Subsequence Rotation

binary search, constructive algorithms, data structures, greedy

Coloring Edges

constructive algorithms, dfs and similar, graphs

Police Stations

constructive algorithms, dfs and similar, dp, graphs, shortest paths, trees

Errich-Tac-Toe (Easy Version)

constructive algorithms, math