Game of Chance

math, probabilities

Centroid Guess

interactive, probabilities, trees

Nezzar and Chocolate Bars

combinatorics, fft, math, probabilities

School Clubs

dp, fft, math, number theory, probabilities

Old Mobile

combinatorics, dp, probabilities

Tokitsukaze and Powers

number theory, probabilities

Don't Exceed

math, probabilities

Astronomy

geometry, probabilities

Combining Slimes

dp, math, matrices, probabilities

Gold Experience

constructive algorithms, graphs, math, number theory, probabilities

DIY Tree

graphs, greedy, math, probabilities

Marek and Matching (hard version)

brute force, probabilities

Roads in E City

interactive, math, probabilities, trees

Mergesort Strikes Back

math, probabilities

Kyoya and Train

dp, fft, graphs, math, probabilities

Slime and Biscuits

math, probabilities

Fugitive Frenzy

math, probabilities

Marek and Matching (easy version)

brute force, probabilities

Clacking Balls

combinatorics, math, probabilities

Infinite Game

brute force, combinatorics, dp, games, probabilities

Computer Game

dp, greedy, math, probabilities

Paper Cutting Again

combinatorics, probabilities

LCC

data structures, math, matrices, probabilities

Nastya and Bees

graphs, interactive, probabilities

Alice and the Cactus

dfs and similar, graphs, math, probabilities

Median Queries

constructive algorithms, interactive, probabilities

Random Ranking

dp, math, probabilities

Tenzing and Random Real Numbers

bitmasks, dp, graphs, math, probabilities

Olha and Igor

interactive, probabilities, trees

James and the Chase

dfs and similar, graphs, probabilities, trees

Game Relics

math, probabilities

ZS Shuffles Cards

combinatorics, dp, math, probabilities

Gosha is hunting

brute force, data structures, dp, flows, math, probabilities, sortings

Laser Beams

*special problem, geometry, probabilities

Bear and Chase

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

Triangle Platinum?

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

Tubular Bells

interactive, math, number theory, probabilities

Expected Components

combinatorics, math, number theory, probabilities

Mark and the Online Exam

bitmasks, constructive algorithms, interactive, probabilities

GCD Groups 2

greedy, number theory, probabilities

Beautiful Bracket Sequence (hard version)

combinatorics, probabilities

Odd Mineral Resource

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

Ghd

brute force, math, probabilities

Marmots (hard)

math, probabilities

Counting Skyscrapers

dp, math, probabilities

Game of Questions

bitmasks, combinatorics, dp, fft, math, probabilities

Google Code Jam

dp, probabilities

Fading into Fog

geometry, interactive, math, probabilities

DZY Loves Games

math, matrices, probabilities

Randomizer

combinatorics, geometry, probabilities

Battalion Strength

data structures, divide and conquer, probabilities

Strongly Connected Tournament

dp, graphs, math, probabilities

Jellyfish and Miku

divide and conquer, dp, math, probabilities

A Random Code Problem

combinatorics, dp, math, number theory, probabilities

Tenzing and Random Operations

combinatorics, dp, math, probabilities

Kazaee

data structures, hashing, probabilities

Darts

geometry, probabilities

A Trance of Nightfall

dp, geometry, matrices, probabilities

Ksusha and Square

geometry, math, probabilities, two pointers

Bingo!

combinatorics, math, probabilities

T-shirt

dp, greedy, probabilities

The Mind

constructive algorithms, interactive, probabilities

Help Shrek and Donkey

dp, games, math, probabilities

Is It Rated?

greedy, interactive, math, probabilities

Birthday

greedy, math, probabilities

Bear and Destroying Subtrees

dp, math, probabilities, trees

Museum

math, matrices, probabilities

World of Darkraft - 2

dp, probabilities

Good Contest

combinatorics, dp, probabilities

X-OR

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

Tree Queries

data structures, probabilities, trees

Intergalaxy Trips

probabilities, shortest paths

Card Guessing

combinatorics, dp, probabilities

Guess the String

constructive algorithms, interactive, probabilities

Gifts

combinatorics, dp, math, probabilities

Piglet's Birthday

dp, math, probabilities

Find a Gift

binary search, interactive, probabilities

Nauuo and Pictures (hard version)

dp, probabilities

Bingo

bitmasks, combinatorics, dp, math, probabilities

Serval and Bonus Problem

combinatorics, dp, math, probabilities

Circular Dungeon

greedy, math, probabilities

Random Walk

dp, graphs, math, probabilities, trees

Helping People

dp, probabilities

Game with Strings

bitmasks, dp, probabilities

Twin Clusters

bitmasks, brute force, constructive algorithms, math, probabilities

Beautiful Bracket Sequence (easy version)

combinatorics, dp, probabilities

Little Elephant and Broken Sorting

dp, math, probabilities

Crypto Lights

combinatorics, dp, math, probabilities

Cards

combinatorics, dp, math, number theory, probabilities

Willem, Chtholly and Seniorious

data structures, probabilities

Colored Jenga

dfs and similar, dp, probabilities

Half-decay tree

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

Memory and Casinos

data structures, math, probabilities

Maze

dfs and similar, dp, probabilities, trees

Expected Square Beauty

dp, math, probabilities

The Top Scorer

combinatorics, dp, math, probabilities

Ela Goes Hiking

combinatorics, dp, math, probabilities

In Search of Truth (Hard Version)

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

Hossam and Range Minimum Query

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

Rare Coins

combinatorics, math, probabilities