Game of Chance

math, probabilities

Laser Beams

*special problem, geometry, probabilities

Nastya and Bees

graphs, interactive, probabilities

Astronomy

geometry, probabilities

Tokitsukaze and Powers

number theory, probabilities

Grove

brute force, dfs and similar, dp, geometry, probabilities

Centroid Guess

interactive, probabilities, trees

Fugitive Frenzy

math, probabilities

Help King

implementation, probabilities, trees

Marmots (hard)

math, probabilities

Don't Exceed

math, probabilities

Darts

geometry, probabilities

Nezzar and Chocolate Bars

combinatorics, fft, math, probabilities

Colored Jenga

dfs and similar, dp, probabilities

Arithmancy (Medium)

constructive algorithms, interactive, probabilities, strings

Alice and the Cactus

dfs and similar, graphs, math, probabilities

Marek and Matching (easy version)

brute force, probabilities

Marek and Matching (hard version)

brute force, probabilities

School Clubs

dp, fft, math, number theory, probabilities

Counting Skyscrapers

dp, math, probabilities

Old Mobile

combinatorics, dp, probabilities

A Trance of Nightfall

dp, geometry, matrices, probabilities

Combining Slimes

dp, math, matrices, probabilities

Ksusha and Square

geometry, math, probabilities, two pointers

Median Queries

constructive algorithms, interactive, probabilities

Roads in E City

interactive, math, probabilities, trees

Bingo!

combinatorics, math, probabilities

Plane of Tanks: Duel

brute force, dp, math, probabilities

Clacking Balls

combinatorics, math, probabilities

Infinite Game

brute force, combinatorics, dp, games, probabilities

Bear and Chase

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

Random Ranking

dp, math, probabilities

Gold Experience

constructive algorithms, graphs, math, number theory, probabilities

Triangle Platinum?

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

Google Code Jam

dp, probabilities

Mergesort Strikes Back

math, probabilities

Fading into Fog

geometry, interactive, math, probabilities

Game of Questions

bitmasks, combinatorics, dp, fft, math, probabilities

DIY Tree

graphs, greedy, math, probabilities

Frequency Mismatch (Hard Version)

binary search, data structures, dfs and similar, hashing, probabilities, trees

Card Guessing

combinatorics, dp, probabilities

Computer Game

dp, greedy, math, probabilities

Guess the String

constructive algorithms, interactive, probabilities

Tubular Bells

interactive, math, number theory, probabilities

DZY Loves Games

math, matrices, probabilities

T-shirt

dp, greedy, probabilities

Paper Cutting Again

combinatorics, probabilities

Frequency Mismatch (Easy Version)

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

Pokermon League challenge

math, probabilities

Randomizer

combinatorics, geometry, probabilities

Expected Components

combinatorics, math, number theory, probabilities

The Mind

constructive algorithms, interactive, probabilities

Gambling Nim

bitmasks, math, matrices, probabilities

Half-decay tree

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

Gifts

combinatorics, dp, math, probabilities

Is It Rated?

greedy, interactive, math, probabilities

Help Shrek and Donkey

dp, games, math, probabilities

Birthday

greedy, math, probabilities

Party Organization

brute force, math, probabilities

Expecting Trouble

*special problem, probabilities

Petya and Tree

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

Kyoya and Train

dp, fft, graphs, math, probabilities

LCC

data structures, math, matrices, probabilities

Piglet's Birthday

dp, math, probabilities

Startup Funding

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

Bear and Destroying Subtrees

dp, math, probabilities, trees

Mark and the Online Exam

bitmasks, constructive algorithms, interactive, probabilities

Chemistry Lab

dp, geometry, probabilities

Bombing

binary search, dp, probabilities

Memory and Casinos

data structures, math, probabilities

Tenzing and Random Real Numbers

bitmasks, dp, graphs, math, probabilities

Olha and Igor

interactive, probabilities, trees

Strongly Connected Tournament

dp, graphs, math, probabilities

Game Relics

math, probabilities

Smart Cheater

data structures, math, probabilities

Inversions problem

dp, probabilities

Museum

math, matrices, probabilities

World of Darkraft - 2

dp, probabilities

Interstellar battle

math, probabilities, trees

James and the Chase

dfs and similar, graphs, probabilities, trees

Castle

dp, greedy, probabilities, sortings, trees

Wilbur and Trees

dp, math, probabilities, sortings

Valera and Number

bitmasks, dp, math, probabilities

Jellyfish and Miku

divide and conquer, dp, math, probabilities

ZS Shuffles Cards

combinatorics, dp, math, probabilities

Maze

dfs and similar, dp, probabilities, trees

Lost Root

interactive, probabilities

A Random Code Problem

combinatorics, dp, math, number theory, probabilities

Mighty Rock Tower

brute force, combinatorics, dp, math, probabilities

BinCoin

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

Bingo

bitmasks, combinatorics, dp, math, probabilities

Find a Gift

binary search, interactive, probabilities

Tickets

combinatorics, math, probabilities

Serval and Bonus Problem

combinatorics, dp, math, probabilities

Circular Dungeon

greedy, math, probabilities

Square Table

constructive algorithms, math, probabilities

Battalion Strength

data structures, divide and conquer, probabilities

Dark Assembly

brute force, probabilities

Nauuo and Pictures (hard version)

dp, probabilities

Random Walk

dp, graphs, math, probabilities, trees