Little Elephant and LCM

binary search, combinatorics, dp, math

Selling Souvenirs

binary search, dp, greedy, ternary search

Expected Damage

binary search, combinatorics, probabilities

Make It Connected

binary search, brute force, constructive algorithms, dsu, graphs, greedy, matrices, trees, two pointers

Cubes

binary search, dp, two pointers

New School

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

Korney Korneevich and XOR (hard version)

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

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

Chip 'n Dale Rescue Rangers

binary search, geometry, math

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

Greedy Shopping

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

List Of Integers

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

K Integers

binary search, data structures

Ordering Pizza

binary search, sortings, ternary search

GukiZ and GukiZiana

binary search, data structures, implementation

Chain Reaction

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

Mahmoud and Ehab and the binary string

binary search, divide and conquer, interactive

Tree

binary search, dp, trees

Professor GukiZ and Two Arrays

binary search, two pointers

AmShZ and G.O.A.T.

binary search, brute force, greedy, implementation, math

Network Coverage

binary search, constructive algorithms, data structures, greedy

Doctor

binary search, math, sortings

Vlad and the Nice Paths (hard version)

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

Biathlon

binary search, implementation

Cheap Robot

binary search, dsu, graphs, shortest paths, trees

Minimum Array

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

Charming Meals

binary search, brute force, greedy, sortings

Circular Mirror

binary search, combinatorics, geometry, math, two pointers

Reverse and Swap

binary search, bitmasks, data structures

Restoring Increasing Sequence

binary search, brute force, greedy, implementation

Bear and Bowling 4

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

Vasya's Function

binary search, implementation, math

Session in BSU

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

Grouped Carriages

binary search, data structures, dp, flows, greedy

Max to the Right of Min

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

Prime Gift

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

FTL

binary search, dp

Vladik and cards

binary search, bitmasks, brute force, dp

Stadium and Games

binary search, math

Spanning Tree Queries

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

Sereja and Periods

binary search, dfs and similar, strings

Culture Code

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

Infinite Card Game

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

Serval and Snake

binary search, brute force, interactive

Vika and Wiki

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

Flying Sort (Hard Version)

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

Santa Claus and Tangerines

binary search, data structures, greedy, two pointers

Stringforces

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

Glad to see you!

binary search, interactive

Arson In Berland Forest

binary search, graphs, graphs, shortest paths

Numerical Sequence (hard version)

binary search, math

Searching Rectangles

binary search, constructive algorithms, interactive

Hot Bath

binary search, brute force, math

Mahmoud and Ehab and the function

binary search, data structures, sortings

Sereja and Squares

binary search, data structures, hashing

Number Busters

binary search, math

Johnny and Megan's Necklace

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

Blog Photo

binary search, implementation

The Hidden Pair (Easy Version)

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

Bracket Cost

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

Split the Tree

binary search, data structures, dp, greedy, trees

Joking (Easy Version)

binary search, constructive algorithms, interactive, ternary search

Sanae and Giant Robot

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

Optical Experiment

binary search, data structures, dp

Mr. Kitayuta vs. Bamboos

binary search, greedy

Spider's Web

binary search, sortings, two pointers

RBS

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

Strange Shuffle

binary search, brute force, constructive algorithms, interactive

Josuke and Complete Graph

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

Simple Skewness

binary search, math, ternary search

Yurii Can Do Everything

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

Memory for Arrays

binary search, bitmasks, greedy

Level Generation

binary search, math, ternary search

Radio stations

binary search, data structures

Dima and Trap Graph

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

Gaining Rating

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

Nastya and King-Shamans

binary search, data structures

Tyndex.Brome

binary search, implementation

Rectangle Shrinking

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

Expected diameter of a tree

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

Trucks and Cities

binary search, dp

Nanosoft

binary search, data structures, dp, implementation

The Hidden Pair (Hard Version)

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

Good Subarrays (Hard Version)

binary search, data structures, dp, two pointers

Game with Stones

binary search, data structures, games, greedy

Lightsabers (medium)

binary search, two pointers

Getting Deals Done

binary search, data structures

Zip-line

binary search, data structures, dp, hashing

Hospital Queue

binary search, graphs, greedy, implementation

Palindrome Partition

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

Bipartite Segments

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

Decomposition

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

The penguin's game

binary search, constructive algorithms, interactive

Distance Tree (easy version)

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

Painting Edges

binary search, data structures

April Fools' Problem (medium)

binary search, flows, graphs

wxhtzdy ORO Tree

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

Strange Function

binary search, data structures, dp, greedy