Berland collider

binary search

Nudist Beach

binary search, graphs, greedy

Hiking

binary search, dp

Empire Strikes Back

binary search, math, number theory

New Passenger Trams

binary search, brute force, data structures, sortings, two pointers

wxhtzdy ORO Tree

binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees

Decomposition

binary search, brute force, data structures, divide and conquer, dp, two pointers

Bipartite Segments

binary search, data structures, dfs and similar, dsu, graphs, two pointers

Game with Stones

binary search, data structures, games, greedy

Rectangle Shrinking

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

Sereja and Squares

binary search, data structures, hashing

Infinite Card Game

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

Culture Code

binary search, combinatorics, data structures, dp, shortest paths, sortings

Max to the Right of Min

binary search, data structures, divide and conquer, dp, dsu, two pointers

AmShZ and G.O.A.T.

binary search, brute force, greedy, implementation, math

K Integers

binary search, data structures

Yet Another Array Counting Problem

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

Company

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

New School

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

Selling Souvenirs

binary search, dp, greedy, ternary search

Excellent Arrays

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

Stressful Training

binary search, greedy

Sum of Medians

binary search, brute force, data structures, implementation

Dog Snacks

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

Mark and Professor Koro

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

MEX of LCM

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

LCM Sum (easy version)

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

Hemose in ICPC ?

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

Asterism (Hard Version)

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

Qpwoeirut and Vertices

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

MEX Queries

binary search, data structures, trees

Fixed Point Removal

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

Complete The Graph

binary search, constructive algorithms, graphs, shortest paths

Printer

binary search, data structures, implementation, sortings

Petya and Tree

binary search, dfs and similar, probabilities, sortings, trees

Maze 1D

binary search, greedy, implementation

Lucky Tickets

binary search, data structures, sortings, two pointers

BinCoin

binary search, divide and conquer, hashing, implementation, probabilities, trees

Thwarting Demonstrations

binary search, data structures, trees

Mushroom Gnomes - 2

binary search, data structures, probabilities, sortings

George and Cards

binary search, data structures

Guard Duty (medium)

binary search, dp, greedy, sortings

Chemistry Experiment

binary search, data structures, ternary search

Prairie Partition

binary search, constructive algorithms, greedy, math

Nastya Hasn't Written a Legend

binary search, data structures

Hospital Queue

binary search, graphs, greedy, implementation

Gaining Rating

binary search, greedy, implementation, math, sortings, two pointers

Radio stations

binary search, data structures

Chain Reaction

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

Numerical Sequence (hard version)

binary search, math

Searching Rectangles

binary search, constructive algorithms, interactive

Arson In Berland Forest

binary search, graphs, graphs, shortest paths

Glad to see you!

binary search, interactive

Serval and Snake

binary search, brute force, interactive

Vladik and cards

binary search, bitmasks, brute force, dp

Vlad and the Nice Paths (hard version)

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

Professor GukiZ and Two Arrays

binary search, two pointers

Tree

binary search, dp, trees

List Of Integers

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

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

Rock Is Push

binary search, dp

Explosions?

binary search, data structures, dp, greedy, math

Serge and Dining Room

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

High Cry

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

Two chandeliers

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

Cute Sequences

binary search, brute force, greedy, math

Irrigation

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

Valera and Queries

binary search, data structures

notepad.exe

binary search, constructive algorithms, greedy, interactive

Bear and Tower of Cubes

binary search, dp, greedy

Two Types of Spells

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

Weights Division (hard version)

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

Domino Principle

binary search, data structures, sortings

Army Creation

binary search, data structures

Andrew and Taxi

binary search, dfs and similar, graphs

Anonymity Is Important

binary search, brute force, data structures, dsu, greedy, sortings

Delivery Bears

binary search, flows, graphs

Vika and Bonuses

binary search, brute force, math, ternary search

Nature Reserve

binary search, geometry, ternary search

Gold Transfer

binary search, data structures, dp, greedy, interactive, trees

Arithmetic Progression

binary search, interactive, number theory, probabilities

Telepanting

binary search, data structures, dp, sortings

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

Travelling Salesman Problem

binary search, data structures, dp, greedy, shortest paths, sortings, two pointers

Make It Increasing

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

GukiZ hates Boxes

binary search, greedy

Carrots for Rabbits

binary search, data structures, greedy, math, sortings

The Bakery

binary search, data structures, divide and conquer, dp, two pointers

Erase and Extend (Hard Version)

binary search, data structures, greedy, hashing, string suffix structures, strings, two pointers

Tree Requests

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

Автобус

binary search, data structures, greedy, sortings

Neural Network Problem

*special problem, binary search, greedy

Significant Cups

*special problem, binary search, data structures, two pointers

Bombing

binary search, dp, probabilities

Graph

*special problem, binary search, dfs and similar, dp, math, ternary search

Harry Potter and the Golden Snitch

binary search, geometry

Hostname Aliases

*special problem, binary search, data structures, implementation, sortings, strings

Inna and Binary Logic

binary search, bitmasks, data structures