Range Sorting (Hard Version)

binary search, data structures, dp, greedy

Red-Blue Operations (Hard Version)

binary search, constructive algorithms, greedy, implementation, math

Avoid Rainbow Cycles

data structures, dsu, graphs, greedy, sortings, trees

Omkar and Landslide

binary search, constructive algorithms, data structures, greedy, math

Phoenix and Berries

brute force, dp, greedy, math

DeadLee

data structures, dfs and similar, greedy, implementation, sortings

Editorial for Two

binary search, data structures, greedy, implementation

Are You Fired?

constructive algorithms, data structures, greedy, implementation

Voting (Hard Version)

binary search, data structures, greedy

Kindergarten

data structures, dp, greedy

XOR Tree

bitmasks, data structures, dfs and similar, dsu, greedy, trees

Buy Low Sell High

constructive algorithms, data structures, greedy

Transportation

greedy, sortings, two pointers

Sweets for Everyone!

binary search, greedy, implementation

Ilya and Two Numbers

constructive algorithms, data structures, dsu, greedy

Brackets

combinatorics, dp, greedy

Square Tiling

constructive algorithms, greedy

Castle

dp, greedy, probabilities, sortings, trees

Edo and Magnets

brute force, greedy, implementation, two pointers

Mashmokh and Water Tanks

binary search, data structures, greedy, trees, two pointers

Discarding Game

dp, greedy, two pointers

Alex and Complicated Task

data structures, dp, greedy

Polycarp's problems

binary search, dp, greedy

Timetable

constructive algorithms, data structures, greedy, math

Curfew

binary search, brute force, greedy, sortings

Monsters and Potions

brute force, dp, greedy, implementation

Chemistry in Berland

dfs and similar, greedy, trees

Vasya and Templates

greedy, implementation, strings

Guess the Tree

bitmasks, constructive algorithms, dp, greedy, trees

Nudist Beach

binary search, graphs, greedy

String Multiplication

dp, greedy, strings

City Union

constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math

Digital Wallet

dp, greedy

Game with Stones

binary search, data structures, games, greedy

Rectangle Shrinking

binary search, brute force, data structures, greedy, implementation, two pointers

Maximum path

dp, greedy, implementation

Queue in the Train

data structures, greedy, implementation

Anton and Ira

constructive algorithms, greedy, math

Knapsack

dfs and similar, dp, greedy

st-Spanning Tree

dsu, graphs, greedy, implementation

Infinite Card Game

binary search, brute force, data structures, dfs and similar, dp, dsu, games, graphs, greedy, sortings, two pointers

Paint Charges

data structures, dp, greedy, math

Beautiful Rectangle

brute force, combinatorics, constructive algorithms, data structures, greedy, math

Sasha and the Happy Tree Cutting

bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees

Looksery Party

constructive algorithms, dfs and similar, graphs, greedy

Jellyfish and EVA

dp, graphs, greedy, math, probabilities

Modular Sequence

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

Tenzing and Triangle

data structures, dp, geometry, greedy, math

Poman Numbers

bitmasks, greedy, math, strings

PermutationForces II

brute force, combinatorics, greedy, sortings, trees, two pointers

AmShZ and G.O.A.T.

binary search, brute force, greedy, implementation, math

Sum Queries?

data structures, greedy, implementation, math

Alice and the Doll

brute force, data structures, greedy, implementation

Red-Black Pepper

brute force, data structures, greedy, math, number theory

Earth Wind and Fire

constructive algorithms, greedy, math, sortings, two pointers

Tree Compass

constructive algorithms, dfs and similar, greedy, trees

Company

binary search, data structures, dfs and similar, greedy, trees

New School

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

Leaving the Bar

brute force, data structures, geometry, greedy, math, sortings

Number of Groups

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

Selling Souvenirs

binary search, dp, greedy, ternary search

Colors and Intervals

constructive algorithms, data structures, greedy, sortings

Tokitsukaze and Duel

brute force, games, greedy

Stressful Training

binary search, greedy

Lost Array

graphs, greedy, interactive, shortest paths

Xenon's Attack on the Gangs

combinatorics, dfs and similar, dp, greedy, trees

Boxes And Balls

data structures, greedy

Tree Queries (Hard Version)

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

Optimal Insertion

data structures, divide and conquer, dp, greedy, sortings

Dog Snacks

binary search, dfs and similar, dp, greedy, trees

Extreme Extension

dp, greedy, math, number theory

Mark and Professor Koro

binary search, bitmasks, brute force, combinatorics, data structures, greedy

Wine Factory (Easy Version)

data structures, greedy

Array GCD

dp, greedy, number theory

Happy Life in University

data structures, dfs and similar, greedy, trees

Voting (Easy Version)

data structures, dp, greedy

Removing Leaves

data structures, greedy, implementation, trees

Qpwoeirut and Vertices

binary search, data structures, dfs and similar, divide and conquer, dsu, greedy, trees

Monster Invaders

dp, greedy, implementation

Keshi in Search of AmShZ

graphs, greedy, shortest paths

Fixed Point Removal

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

Dogeforces

constructive algorithms, data structures, dfs and similar, divide and conquer, dsu, greedy, sortings, trees

Trees of Tranquillity

data structures, dfs and similar, greedy, trees

Complete the Projects (hard version)

dp, greedy

Trains and Statistic

data structures, dp, greedy

Centroids

data structures, dfs and similar, dp, graphs, greedy, trees

Minimal Labels

data structures, dfs and similar, graphs, greedy

Almost Triple Deletions

data structures, dp, greedy

Grid Xor

constructive algorithms, greedy, implementation, interactive, math

Team Building

bitmasks, dp, greedy, sortings

Mister B and Boring Game

games, greedy

Luck is in Numbers

greedy

Two progressions

constructive algorithms, greedy

Tetris revisited

constructive algorithms, graph matchings, greedy, math

Swaps

constructive algorithms, graphs, greedy

Tests Renumeration

greedy, implementation

Maze 1D

binary search, greedy, implementation

Competition

data structures, greedy

Antichain

dp, graph matchings, greedy

Maximum Control (medium)

data structures, dfs and similar, graphs, greedy, trees