Greg and Friends

combinatorics, dp, graphs, shortest paths

Greg and Graph

dp, graphs, shortest paths

Shaass the Great

dp, trees

Shaass and Bookshelf

dp, greedy

Connected Components

data structures, dfs and similar, dp, dsu

Polo the Penguin and Matrix

brute force, dp, implementation, sortings, ternary search

Polo the Penguin and Lucky Numbers

dp, implementation, math

Positions in Permutations

combinatorics, dp, math

Permutation Sum

bitmasks, combinatorics, dp, implementation, meet-in-the-middle

Cows and Cool Sequences

dp, math, number theory

Coin Troubles

dp

Cow Program

dfs and similar, dp, graphs

Yet Another Number Game

dp, games

Sequence Transformation

brute force, data structures, dp, implementation, math

Beautiful Decomposition

dp, games, greedy, number theory

The Minimum Number of Variables

bitmasks, dp

Ladder

dp, implementation, two pointers

Google Code Jam

dp, probabilities

Little Girl and Maximum XOR

bitmasks, dp, greedy, implementation, math

Zero Tree

dfs and similar, dp, greedy, trees

Dima and Game

dp, games

Dima and Figure

dp

Maximum Waterfall

data structures, dp, graphs, sortings

Greenhouse Effect

dp

Wall Bars

dp

Roadside Trees

data structures, dp

Colorful Stones

dp, two pointers

Choosing Balls

dp

Good Sequences

dp, number theory

Rhombus

brute force, data structures, dp

Maxim and Calculator

brute force, dp, two pointers

Maxim and Increasing Subsequence

dp

Maxim and Matrix

constructive algorithms, dp, math

Maxim and Restaurant

dp, math, probabilities

Little Elephant and Broken Sorting

dp, math, probabilities

Little Elephant and LCM

binary search, combinatorics, dp, math

Little Elephant and Elections

brute force, combinatorics, dp

Liars and Serge

dp

Almost Arithmetical Progression

brute force, dp

Dormitory

dp, implementation

Physics Practical

binary search, dp, sortings, two pointers

Tree and Table

dfs and similar, dp, implementation, trees

Number Transformation

dp, greedy, number theory

Donkey and Stars

data structures, dp, geometry, math, sortings

Piglet's Birthday

dp, math, probabilities

Blood Cousins Return

binary search, data structures, dfs and similar, dp, sortings

Queries for Number of Palindromes

dp, hashing, strings

Cubes

data structures, dp, geometry, two pointers

Meeting Her

dp, graphs, shortest paths

World Eater Brothers

dfs and similar, dp, greedy, trees

Number Challenge

combinatorics, dp, implementation, math, number theory

Let's Play Osu!

dp, math, probabilities

Fence

dp

Weather

dp, implementation

Quick Tortoise

bitmasks, divide and conquer, dp

Doe Graphs

constructive algorithms, divide and conquer, dp, graphs, shortest paths

Table

bitmasks, combinatorics, dp, math

Cactus

data structures, dfs and similar, dp, graphs, trees

Gifts

combinatorics, dp, math, probabilities

Towers

dp, greedy, two pointers

Fractal Detector

dp, hashing

Barcode

dp, matrices

Two Strings

data structures, dp, strings

Decoding Genome

dp, matrices

Choosing Capital for Treeland

dfs and similar, dp, graphs, trees

Color Stripe

brute force, dp, greedy

Formurosa

divide and conquer, dp, expression parsing

Periodical Numbers

combinatorics, dp, number theory

Relay Race

dp

Numbers

combinatorics, dp

IT Restaurants

dfs and similar, dp, trees

Cowboys

combinatorics, dp, math

Multicolored Marbles

dp, math

Police Station

dp, graphs, shortest paths

Solitaire

dfs and similar, dp

Little Elephant and Retro Strings

dp

Little Elephant and Interval

binary search, combinatorics, dp

Brand New Problem

bitmasks, brute force, dp

Fragile Bridges

dp

Clear Symmetry

constructive algorithms, dp, math

Dynasty Puzzles

dp

Cut Ribbon

brute force, dp

AlgoRace

dp, shortest paths

Clever Fat Rat

dp

T-shirt

dp, greedy, probabilities

Wooden Fence

dp

Cubes

binary search, dp, two pointers

Letter

dp

Representative Sampling

dp, sortings, strings

Hyper String

dp

Word Cut

dp

Power Defence

brute force, dp, geometry, greedy

Plane of Tanks: Duel

brute force, dp, math, probabilities

File List

dp, greedy, implementation

Spiral Maximum

brute force, dp

Wizards and Huge Prize

dp, math, probabilities

Tetrahedron

dp, math, matrices

Shoe Store

dp, graph matchings, greedy, sortings, two pointers

Compatible Numbers

bitmasks, brute force, dfs and similar, dp

Another Problem on Strings

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