Controversial Rounds

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

Summer Earnings

binary search, bitmasks, brute force, geometry, sortings

Animals and Puzzle

binary search, data structures

Strange Function

binary search, data structures, dp, greedy

Card Game

binary search, flows, graphs

wxhtzdy ORO Tree

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

April Fools' Problem (medium)

binary search, flows, graphs

Cow and Treats

binary search, combinatorics, dp, greedy, implementation, math

Painting Edges

binary search, data structures

Distance Tree (easy version)

binary search, data structures, dfs and similar, graphs, shortest paths, trees

Decomposition

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

The penguin's game

binary search, constructive algorithms, interactive

Bipartite Segments

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

Palindrome Partition

binary search, brute force, data structures, dp, hashing, strings

Hospital Queue

binary search, graphs, greedy, implementation

Getting Deals Done

binary search, data structures

Zip-line

binary search, data structures, dp, hashing

Lightsabers (medium)

binary search, two pointers

Game with Stones

binary search, data structures, games, greedy

Good Subarrays (Hard Version)

binary search, data structures, dp, two pointers

The Hidden Pair (Hard Version)

binary search, dfs and similar, graphs, interactive, shortest paths, trees

Trucks and Cities

binary search, dp

Expected diameter of a tree

binary search, brute force, dfs and similar, dp, sortings, trees

Nanosoft

binary search, data structures, dp, implementation

Tyndex.Brome

binary search, implementation

Nastya and King-Shamans

binary search, data structures

Rectangle Shrinking

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

Gaining Rating

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

Dima and Trap Graph

binary search, data structures, dfs and similar, dsu, shortest paths, two pointers

Radio stations

binary search, data structures

Level Generation

binary search, math, ternary search

Memory for Arrays

binary search, bitmasks, greedy

Yurii Can Do Everything

binary search, bitmasks, brute force, constructive algorithms, divide and conquer, two pointers

Simple Skewness

binary search, math, ternary search

Josuke and Complete Graph

binary search, brute force, data structures, math, number theory

Strange Shuffle

binary search, brute force, constructive algorithms, interactive

RBS

binary search, bitmasks, brute force, data structures, dp

Spider's Web

binary search, sortings, two pointers

Mr. Kitayuta vs. Bamboos

binary search, greedy

Optical Experiment

binary search, data structures, dp

Sanae and Giant Robot

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

Split the Tree

binary search, data structures, dp, greedy, trees

Bracket Cost

binary search, data structures, divide and conquer, dp, greedy, strings

Joking (Easy Version)

binary search, constructive algorithms, interactive, ternary search

The Hidden Pair (Easy Version)

binary search, dfs and similar, graphs, interactive, shortest paths, trees

Blog Photo

binary search, implementation

Johnny and Megan's Necklace

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

Number Busters

binary search, math

Sereja and Squares

binary search, data structures, hashing

Mahmoud and Ehab and the function

binary search, data structures, sortings

Hot Bath

binary search, brute force, math

Searching Rectangles

binary search, constructive algorithms, interactive

Numerical Sequence (hard version)

binary search, math

Arson In Berland Forest

binary search, graphs, graphs, shortest paths

Glad to see you!

binary search, interactive

Stringforces

binary search, bitmasks, brute force, dp, strings, two pointers

Flying Sort (Hard Version)

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

Santa Claus and Tangerines

binary search, data structures, greedy, two pointers

Vika and Wiki

binary search, bitmasks, combinatorics, divide and conquer, dp, math

Serval and Snake

binary search, brute force, interactive

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

Sereja and Periods

binary search, dfs and similar, strings

Spanning Tree Queries

binary search, data structures, dfs and similar, dsu, graphs, greedy, math, sortings, trees

Vladik and cards

binary search, bitmasks, brute force, dp

Stadium and Games

binary search, math

FTL

binary search, dp

Prime Gift

binary search, dfs and similar, math, meet-in-the-middle, number theory, two pointers

Max to the Right of Min

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

Grouped Carriages

binary search, data structures, dp, flows, greedy

Session in BSU

binary search, dfs and similar, dsu, graph matchings, graphs

Vasya's Function

binary search, implementation, math

Bear and Bowling 4

binary search, data structures, divide and conquer, geometry, ternary search

Restoring Increasing Sequence

binary search, brute force, greedy, implementation

Reverse and Swap

binary search, bitmasks, data structures

Circular Mirror

binary search, combinatorics, geometry, math, two pointers

Minimum Array

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

Cheap Robot

binary search, dsu, graphs, shortest paths, trees

Biathlon

binary search, implementation

Vlad and the Nice Paths (hard version)

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

Doctor

binary search, math, sortings

Network Coverage

binary search, constructive algorithms, data structures, greedy

Charming Meals

binary search, brute force, greedy, sortings

AmShZ and G.O.A.T.

binary search, brute force, greedy, implementation, math

Professor GukiZ and Two Arrays

binary search, two pointers

Tree

binary search, dp, trees

Ordering Pizza

binary search, sortings, ternary search

Mahmoud and Ehab and the binary string

binary search, divide and conquer, interactive

GukiZ and GukiZiana

binary search, data structures, implementation

K Integers

binary search, data structures

List Of Integers

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

Greedy Shopping

binary search, data structures, divide and conquer, greedy, implementation

Kuro and GCD and XOR and SUM

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

Edge Reverse

binary search, dfs and similar, graphs, trees

Chain Reaction

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

Chip 'n Dale Rescue Rangers

binary search, geometry, math

Company

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

Korney Korneevich and XOR (hard version)

binary search, brute force, dp, greedy, two pointers

New School

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

Cubes

binary search, dp, two pointers