Last Number

combinatorics, math

M-tree

data structures, math, sortings, trees

Climbing the Tree

binary search, math

Candies

constructive algorithms, math, number theory

Prediction

combinatorics, dp, math

Two Tanks

binary search, dp, implementation, math

Sum on Subarrays

constructive algorithms, greedy, math

Points on Plane

binary search, greedy, math

Minibuses on Venus (hard version)

brute force, combinatorics, dp, math

Playing in a Casino

math, sortings

GCD Master (hard version)

greedy, math, sortings

GCD Master (easy version)

greedy, math, number theory, sortings

DSU Master

combinatorics, dp, dsu, math

Sequence Master

brute force, constructive algorithms, math

Walking Master

geometry, greedy, math

Survival of the Weakest (hard version)

greedy, math, sortings, two pointers

Survival of the Weakest (easy version)

binary search, brute force, implementation, math, sortings

Place for a Selfie

binary search, data structures, geometry, math

Pull Your Luck

brute force, greedy, math, number theory

Lame King

greedy, math

Settlement of Guinea Pigs

greedy, implementation, math

Another n-dimensional chocolate bar

dp, math, meet-in-the-middle, number theory

Count Voting

combinatorics, dp, math

City Union

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

Equalize by Divide

brute force, constructive algorithms, greedy, math

Recent Actions

data structures, greedy, implementation, math

Gifts from Grandfather Ahmed

dp, math, number theory

Shocking Arrangement

constructive algorithms, greedy, math

Candy Store

greedy, math, number theory

Li Hua and Array

brute force, data structures, dsu, math, number theory, two pointers

Strange Triples

brute force, math, number theory

Maximum Set

binary search, math

Explosions?

binary search, data structures, dp, greedy, math

Triangle Coloring

combinatorics, math

Counting Factorizations

combinatorics, divide and conquer, dp, math, number theory

Scoring Subsequences

binary search, greedy, math, two pointers

Not Dividing

constructive algorithms, greedy, math

Moscow Gorillas

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

Fedya and Array

constructive algorithms, math

Yet Another Promotion

greedy, math

Fixed Prefix Permutations

binary search, bitmasks, data structures, hashing, math, sortings

Min Max Sort

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

Stand-up Comedian

greedy, math

Timofey and Black-White Tree

brute force, dfs and similar, divide and conquer, graphs, greedy, math, shortest paths, trees

Premutation

brute force, implementation, math

Taisia and Dice

greedy, greedy, math

Polycarp and the Day of Pi

implementation, math, strings

Serval and Music Game

brute force, dp, implementation, math, number theory

Serval and Toxel's Arrays

combinatorics, dp, implementation, math

Serval and Mocha's Array

brute force, math, number theory

Moving Dots

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

Matching Numbers

constructive algorithms, greedy, math

Sum of Two Numbers

constructive algorithms, greedy, implementation, math, probabilities

One and Two

brute force, implementation, math

Inverse Transformation

constructive algorithms, implementation, math

The Harmonization of XOR

bitmasks, constructive algorithms, greedy, math

Remove the Bracket

dp, greedy, math

Number Factorization

greedy, math, number theory

Exponential Equation

constructive algorithms, math

Game of the Year

brute force, data structures, math, number theory

Matrix of Differences

constructive algorithms, math

Make it Beautiful

constructive algorithms, math, sortings

Bracket Insertion

combinatorics, dp, math, trees

Many Perfect Squares

brute force, math, number theory

Parallel Projection

geometry, math

Delicious Dessert

binary search, dsu, hashing, math, number theory, string suffix structures

Josuke and Complete Graph

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

GCD Partition

brute force, greedy, math, number theory

MKnez's ConstructiveForces Task

constructive algorithms, math

Maximizing Root

dfs and similar, dp, graphs, math, number theory, trees

The Tree Has Fallen!

bitmasks, dfs and similar, math, trees

Flexible String Revisit

combinatorics, dp, math, probabilities

The Forbidden Permutation

greedy, math

Score of a Tree

bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees

Quiz Master

binary search, math, number theory, sortings, two pointers

Emordnilap

combinatorics, greedy, math

Everybody Likes Good Arrays!

greedy, math

Count Permutations

math

Controllers

binary search, math

Uniform Chemistry

dp, math

Another Wine Tasting Event

combinatorics, constructive algorithms, math, strings

Teamwork

constructive algorithms, greedy, math

Laboratory on Pluto

constructive algorithms, dp, greedy, math

Friendly Spiders

dfs and similar, graphs, math, number theory, shortest paths

Interesting Sequence

bitmasks, math

Coloring

constructive algorithms, greedy, math

Add Plus Minus Sign

constructive algorithms, math

Jumbled Trees

constructive algorithms, math

Game of Questions

bitmasks, combinatorics, dp, fft, math, probabilities

Amazing Trick

constructive algorithms, graph matchings, math, probabilities

Gaining Rating

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

Absolute Sorting

constructive algorithms, math

Different Differences

constructive algorithms, greedy, math

Hossam and Trainees

greedy, math, number theory

Hossam and Combinatorics

combinatorics, math, sortings

Koxia and Bracket

divide and conquer, fft, math

Koxia and Sequence

bitmasks, combinatorics, dp, math, number theory

Koxia and Tree

combinatorics, dfs and similar, dp, dsu, math, probabilities, trees

Koxia and Number Theory

brute force, chinese remainder theorem, math, number theory

Копирование файлов II

*special problem, binary search, brute force, math