Dominant Indices

data structures, dsu, trees

Sonya and Problem Wihtout a Legend

dp, sortings

Count Pairs

math, matrices, number theory, two pointers

Physical Education Lessons

data structures, implementation, sortings

Nearest vectors

geometry, sortings

Xor-MST

bitmasks, constructive algorithms, data structures

Errich-Tac-Toe (Hard Version)

constructive algorithms, math

Team Building

bitmasks, dp, greedy, sortings

Sasha and Array

data structures, math, matrices

Devu and Flowers

bitmasks, combinatorics, number theory

Grid Xor

constructive algorithms, greedy, implementation, interactive, math

Almost Triple Deletions

data structures, dp, greedy

Minimal Labels

data structures, dfs and similar, graphs, greedy

Centroids

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

Rectangle Painting 1

dp

Antimatter

dp

Bitwise Queries (Hard Version)

bitmasks, constructive algorithms, interactive, math

Placing Rooks

combinatorics, fft, math

Mike and Foam

bitmasks, combinatorics, dp, math, number theory

Double Profiles

graphs, hashing, sortings

Complete The Graph

binary search, constructive algorithms, graphs, shortest paths

Anton and School - 2

combinatorics, dp, math, number theory

Trains and Statistic

data structures, dp, greedy

Complete the Projects (hard version)

dp, greedy

Returning Home

graphs, shortest paths, sortings

Road Improvement

dp, trees

Product Oriented Recurrence

dp, math, matrices, number theory

Prefix Product Sequence

constructive algorithms, math, number theory

Garden of the Sun

constructive algorithms, graphs

Trees of Tranquillity

data structures, dfs and similar, greedy, trees

Dogeforces

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

Another Filling the Grid

combinatorics, dp, math

LuoTianyi and the Floating Islands (Hard Version)

combinatorics, dfs and similar, math, probabilities, trees

Fixed Point Removal

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

Tree Array

brute force, combinatorics, dp, graphs, math, probabilities, trees

388535 (Hard Version)

bitmasks, brute force, data structures, math

Keshi in Search of AmShZ

graphs, greedy, shortest paths

Anthem of Berland

dp, strings

MEX Queries

binary search, data structures, trees

Monster Invaders

dp, greedy, implementation

Segment Sum

bitmasks, combinatorics, dp, math

Qpwoeirut and Vertices

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

Edges in MST

dfs and similar, dsu, graphs, sortings

Omkar and Forest

combinatorics, graphs, math, shortest paths

Asterism (Hard Version)

binary search, combinatorics, dp, math, number theory, sortings

Two Different

constructive algorithms, divide and conquer

Removing Leaves

data structures, greedy, implementation, trees

Pattern Matching

bitmasks, data structures, dfs and similar, graphs, hashing, sortings, strings

Tourist Reform

dfs and similar, graphs

Envy

data structures, dsu, graphs

Divide Points

constructive algorithms, geometry, math

Another MEX Problem

bitmasks, brute force, dp, shortest paths

Divan and Kostomuksha (hard version)

dp, number theory

Hemose in ICPC ?

binary search, dfs and similar, implementation, interactive, math, number theory, trees

Fox And Dinner

flows

Instant Noodles

graphs, hashing, math, number theory

Pairwise Modulo

data structures, math

Voting (Easy Version)

data structures, dp, greedy

Happy Life in University

data structures, dfs and similar, greedy, trees

Enchanted Artifact

constructive algorithms, interactive, strings

Drazil and Park

data structures

MEX of LCM

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

Array GCD

dp, greedy, number theory

LCM Sum (easy version)

binary search, brute force, combinatorics, math, number theory, two pointers

Game of the Year

brute force, data structures, math, number theory

Wine Factory (Easy Version)

data structures, greedy

The Great Mixing

dfs and similar, graphs, shortest paths

Arithmetic Operations

brute force, data structures, graphs, math

Mark and Professor Koro

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

Steps to One

dp, math, number theory, probabilities

Extreme Extension

dp, greedy, math, number theory

Martian Strings

string suffix structures, strings

Binary Spiders

bitmasks, data structures, implementation, math, sortings, trees

Dog Snacks

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

Pursuit For Artifacts

dfs and similar, dsu, graphs, trees

Optimal Insertion

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

Tree Queries (Hard Version)

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

Merging Towers

data structures, dsu, implementation, trees

Sum of Medians

binary search, brute force, data structures, implementation

Robot on the Board 2

brute force, dfs and similar, graphs, implementation

Boxes And Balls

data structures, greedy

Xenon's Attack on the Gangs

combinatorics, dfs and similar, dp, greedy, trees

Lost Array

graphs, greedy, interactive, shortest paths

Multidimensional Queries

bitmasks, data structures

Stressful Training

binary search, greedy

Alternating Tree

combinatorics, dfs and similar, divide and conquer, dp, probabilities, trees

Pig and Palindromes

combinatorics, dp

Boboniu Walks on Graph

brute force, dfs and similar, graphs, hashing

Tokitsukaze and Duel

brute force, games, greedy

Excellent Arrays

binary search, combinatorics, constructive algorithms, implementation, math, sortings, two pointers

Colors and Intervals

constructive algorithms, data structures, greedy, sortings

Partial Sorting

combinatorics, math, number theory

Selling Souvenirs

binary search, dp, greedy, ternary search

Number of Groups

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

Tree Compass

constructive algorithms, dfs and similar, greedy, trees

Leaving the Bar

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

Daniel and Spring Cleaning

bitmasks, brute force, combinatorics, dp

New School

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

Company

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

Yet Another Array Counting Problem

binary search, data structures, divide and conquer, dp, flows, math, trees