A Battle Against a Dragon

*special problem, data structures, dp

Composing Of String

*special problem, dp

Colored Jenga

dfs and similar, dp, probabilities

Clever Fat Rat

dp

Number Deletion Game

*special problem, dp, games, greedy

Poachers

dp, games, graphs, trees

Maximum Sum Subarrays

*special problem, dp

Min-Fund Prison (Hard)

bitmasks, dfs and similar, dp, graphs, trees

Palindromic Doubles

*special problem, data structures, dp

Summer Reading

dp, greedy

The Great Marathon

dp

School

dp, dsu

Send the Fool Further! (hard)

dfs and similar, dp, math, trees

Plane of Tanks: Duel

brute force, dp, math, probabilities

Binary Key

dp, greedy, implementation

Hyper String

dp

Rectangles and Square

brute force, dp

Domino Carpet

dp, implementation

Representative Sampling

dp, sortings, strings

Convex Countour

dp

Min-Fund Prison (Medium)

brute force, dfs and similar, dp, graphs, trees

Journey

dp, math

Flags

dp, math, matrices

Shoe Store

dp, graph matchings, greedy, sortings, two pointers

Expression

dp

Packmen Strike Back

binary search, dp, math

Pasha and Pipe

binary search, brute force, combinatorics, dp, implementation

Journey

dp, trees

Arrangement

bitmasks, dp

The Great Julya Calendar

dp

Masha and Cactus

dp, trees

Smart Boy

dp, games, strings

Cowboys

combinatorics, dp, math

Trails (Hard)

dp, matrices

Dima and Figure

dp

Wilbur and Strings

dfs and similar, dp, graphs, strings

Lesson Timetable

combinatorics, dp, math

Rhombus

brute force, data structures, dp

Little Elephant and Retro Strings

dp

Strange Calculation and Cats

dp, matrices

Crime Management

dp, graphs, matrices

Colorful Stones

dp, two pointers

Igor and Interesting Numbers

brute force, combinatorics, dp, math

Keen Tree Calculation

binary search, data structures, dp, geometry, graphs, implementation, trees

Game with Points

dp, graphs, implementation, shortest paths

Horse Races

dp, math

PE Lesson

dp

Guards In The Storehouse

bitmasks, dp

Electrical Efficiency

combinatorics, data structures, dp, math, number theory, trees

Simplified Nonogram

bitmasks, dp, hashing, meet-in-the-middle

Game with Strings

bitmasks, dp, games

Half-decay tree

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

Garden

bitmasks, dp, graphs, trees

The Great Julya Calendar

dp

Polycarpus the Safecracker

brute force, dp

Write The Contest

binary search, dp, math

Gifts from Grandfather Ahmed

dp, math, number theory

World of Darkraft

dp, games

Tachibana Kanade's Tofu

dp

Similar Words

dp, hashing, strings, trees

Candies and Stones

divide and conquer, dp

PE Lesson

brute force, dp

Dormitory

dp, implementation

Encryption (hard)

data structures, dp

Xenia and Dominoes

bitmasks, dfs and similar, dp

Double Elimination

dp, implementation

The Wall (hard)

dp

Awards For Contestants

brute force, data structures, dp

Context Advertising

dp, two pointers

Wall Bars

dp

Cleaning Robots

dp, trees

Writing a Song

brute force, dp, strings

Widget Library

dp, expression parsing, graphs, implementation

Crisp String

bitmasks, dp

Choosing Two Paths

dfs and similar, dp, greedy, trees

Cows and Cool Sequences

dp, math, number theory

Eleventh Birthday

combinatorics, dp, math

Fibonacci String Subsequences

combinatorics, dp, matrices

Multiset of Strings

bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees

PE Lesson

dp, math

Periodical Numbers

combinatorics, dp, number theory

Jeff and Brackets

dp, matrices

Sereja and Sets

dp

Biathlon Track

binary search, brute force, constructive algorithms, data structures, dp

Path Counting

combinatorics, dp

Ivan the Fool VS Gorynych the Dragon

dp, games, graphs

Mausoleum

dp

Antichain

dp, graph matchings, greedy

Moon Craters

dp, sortings

Four Divisors

data structures, dp, math, number theory, sortings, two pointers

Send the Fool Further! (medium)

dp, trees

Vanya and Balloons

binary search, brute force, dp, implementation

Holiday Wall Ornaments

dp, strings

Don't fear, DravDe is kind

binary search, data structures, dp, hashing

Chemistry Lab

dp, geometry, probabilities

Brackets

combinatorics, dp, greedy

Tree

dp

Kuro and Topological Parity

dp

Compute Power

binary search, dp, greedy

Bombing

binary search, dp, probabilities