X-OR

bitmasks, constructive algorithms, divide and conquer, interactive, probabilities

Hyakugoku and Ladders

dp, probabilities, shortest paths

Little Elephant and Furik and Rubik

math, probabilities

Little Artem and Random Variable

dp, implementation, math, probabilities

DZY Loves FFT

probabilities

Inversions After Shuffle

data structures, probabilities

Nauuo and Pictures (easy version)

dp, probabilities

Good Contest

combinatorics, dp, probabilities

Barrels and boxes

brute force, combinatorics, math, number theory, probabilities

Painting The Wall

dp, probabilities

Bath Queue

combinatorics, dp, probabilities

Playlist

math, probabilities, sortings

Famil Door and Roads

combinatorics, data structures, dfs and similar, dp, probabilities, trees

Crossword Expert

combinatorics, dp, number theory, probabilities, two pointers

Hossam and Range Minimum Query

binary search, bitmasks, data structures, hashing, probabilities, strings, trees

Odd Mineral Resource

binary search, bitmasks, brute force, data structures, probabilities, trees

Twin Clusters

bitmasks, brute force, constructive algorithms, math, probabilities

Tenzing and Random Operations

combinatorics, dp, math, probabilities

Eyes Closed

data structures, probabilities

In Search of Truth (Hard Version)

constructive algorithms, interactive, math, meet-in-the-middle, probabilities

Ela Goes Hiking

combinatorics, dp, math, probabilities

Game with Strings

bitmasks, dp, probabilities

The Top Scorer

combinatorics, dp, math, probabilities

Third Month Insanity

dp, probabilities, trees

Beautiful Bracket Sequence (hard version)

combinatorics, probabilities

Expected Square Beauty

dp, math, probabilities

Mushroom Gnomes - 2

binary search, data structures, probabilities, sortings

Helping People

dp, probabilities

GCD Groups 2

greedy, number theory, probabilities

Slime and Biscuits

math, probabilities

Nauuo and Pictures (hard version)

dp, probabilities

Dark Assembly

brute force, probabilities

Square Table

constructive algorithms, math, probabilities

Random Walk

dp, graphs, math, probabilities, trees

Circular Dungeon

greedy, math, probabilities

Serval and Bonus Problem

combinatorics, dp, math, probabilities

Bingo

bitmasks, combinatorics, dp, math, probabilities

Tickets

combinatorics, math, probabilities

BinCoin

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

Find a Gift

binary search, interactive, probabilities

A Random Code Problem

combinatorics, dp, math, number theory, probabilities

Maze

dfs and similar, dp, probabilities, trees

Mighty Rock Tower

brute force, combinatorics, dp, math, probabilities

Lost Root

interactive, probabilities

Wilbur and Trees

dp, math, probabilities, sortings

Castle

dp, greedy, probabilities, sortings, trees

Valera and Number

bitmasks, dp, math, probabilities

ZS Shuffles Cards

combinatorics, dp, math, probabilities

World of Darkraft - 2

dp, probabilities

Museum

math, matrices, probabilities

Jellyfish and Miku

divide and conquer, dp, math, probabilities

Interstellar battle

math, probabilities, trees

Game Relics

math, probabilities

Inversions problem

dp, probabilities

James and the Chase

dfs and similar, graphs, probabilities, trees

Smart Cheater

data structures, math, probabilities

Olha and Igor

interactive, probabilities, trees

Strongly Connected Tournament

dp, graphs, math, probabilities

Memory and Casinos

data structures, math, probabilities

Bombing

binary search, dp, probabilities

Chemistry Lab

dp, geometry, probabilities

Bear and Destroying Subtrees

dp, math, probabilities, trees

Mark and the Online Exam

bitmasks, constructive algorithms, interactive, probabilities

Startup Funding

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

Battalion Strength

data structures, divide and conquer, probabilities

Tenzing and Random Real Numbers

bitmasks, dp, graphs, math, probabilities

Piglet's Birthday

dp, math, probabilities

LCC

data structures, math, matrices, probabilities

Kyoya and Train

dp, fft, graphs, math, probabilities

Petya and Tree

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

Expecting Trouble

*special problem, probabilities

Birthday

greedy, math, probabilities

Gifts

combinatorics, dp, math, probabilities

Is It Rated?

greedy, interactive, math, probabilities

Half-decay tree

data structures, divide and conquer, dp, math, probabilities

Help Shrek and Donkey

dp, games, math, probabilities

The Mind

constructive algorithms, interactive, probabilities

Party Organization

brute force, math, probabilities

Gambling Nim

bitmasks, math, matrices, probabilities

Randomizer

combinatorics, geometry, probabilities

Expected Components

combinatorics, math, number theory, probabilities

Pokermon League challenge

math, probabilities

T-shirt

dp, greedy, probabilities

Paper Cutting Again

combinatorics, probabilities

DZY Loves Games

math, matrices, probabilities

Tubular Bells

interactive, math, number theory, probabilities

Guess the String

constructive algorithms, interactive, probabilities

Card Guessing

combinatorics, dp, probabilities

Computer Game

dp, greedy, math, probabilities

Mergesort Strikes Back

math, probabilities

Fading into Fog

geometry, interactive, math, probabilities

Google Code Jam

dp, probabilities

DIY Tree

graphs, greedy, math, probabilities

Game of Questions

bitmasks, combinatorics, dp, fft, math, probabilities

Triangle Platinum?

brute force, combinatorics, implementation, interactive, math, probabilities

Gold Experience

constructive algorithms, graphs, math, number theory, probabilities

Bear and Chase

brute force, dfs and similar, graphs, implementation, math, probabilities

Random Ranking

dp, math, probabilities

Frequency Mismatch (Easy Version)

binary search, data structures, divide and conquer, hashing, probabilities, trees

Infinite Game

brute force, combinatorics, dp, games, probabilities