Cycling City

dfs and similar, graphs

Shop

greedy

Pluses everywhere

combinatorics, dp, math, number theory

Cubes

games, greedy, implementation

DNA Alignment

math, strings

Two Buttons

dfs and similar, graphs, greedy, implementation, math, shortest paths

Pangram

implementation, strings

A and B and Lecture Rooms

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

A and B and Interesting Substrings

data structures, dp, two pointers

A and B and Team Training

greedy, implementation, math, number theory

A and B and Compilation Errors

data structures, implementation, sortings

A and B and Chess

implementation

Pasha and Pipe

binary search, brute force, combinatorics, dp, implementation

Arthur and Questions

greedy, implementation, math, ternary search

Ilya and Escalator

combinatorics, dp, math, probabilities

Anya and Smartphone

constructive algorithms, data structures, implementation

Tanya and Postcard

greedy, implementation, strings

Vitaly and Strings

constructive algorithms, strings

Drazil and His Happy Friends

math, number theory

Drazil and Morning Exercise

dfs and similar, dp, dsu, trees, two pointers

Drazil and Park

data structures

Drazil and Tiles

constructive algorithms, greedy

Drazil and Factorial

greedy, math, sortings

Drazil and His Happy Friends

brute force, dsu, meet-in-the-middle, number theory

Drazil and Date

math

Darth Vader and Tree

dp, matrices

R2D2 and Droid Army

binary search, data structures, two pointers

Watto and Mechanism

binary search, data structures, hashing, string suffix structures, strings

Han Solo and Lazer Gun

brute force, data structures, geometry, implementation, math

Chewbaсca and Number

greedy, implementation

Inversions problem

dp

Inversions problem

dp, probabilities

Inversions problem

brute force, dfs and similar, dp, meet-in-the-middle

Scaygerboss

flows

Scaygerboss

flows

Subarray Cuts

dp

Subarray Cuts

dp

Constrained Tree

constructive algorithms, data structures

Constrained Tree

dfs and similar

Second price auction

bitmasks, probabilities

Permutations

bitmasks, divide and conquer, math

Permutations

brute force

Game

constructive algorithms, math

Fox And Polygon

constructive algorithms, divide and conquer

Fox And Travelling

dp, trees

Fox And Dinner

flows

Fox And Jumping

bitmasks, brute force, dp, math

Fox And Names

dfs and similar, graphs, sortings

Fox And Two Dots

dfs and similar

Fox And Snake

implementation

Progress Monitoring

dp, trees

Pretty Song

math, strings

Restoring Numbers

constructive algorithms, math

Sums of Digits

dp, greedy, implementation

Painting Pebbles

constructive algorithms, greedy, implementation

Maximum in Table

brute force, implementation

Arthur and Brackets

dp, greedy

Tanya and Password

dfs and similar, graphs

Anya and Ghosts

constructive algorithms, greedy

Anton and currency you all know

greedy, math, strings

Pasha and Pixels

brute force

Breaking Good

dfs and similar, dp, graphs, shortest paths

The Maths Lecture

dp, implementation

Guess Your Way Out!

implementation, math, trees

Amr and Pins

geometry, math

Amr and Music

greedy, implementation, sortings

Mr. Kitayuta's Gift

combinatorics, dp, matrices, strings

Mr. Kitayuta's Colorful Graph

brute force, dfs and similar, dsu, graphs

Mr. Kitayuta vs. Bamboos

binary search, greedy

Mr. Kitayuta's Technology

dfs and similar

Mr. Kitayuta, the Treasure Hunter

dfs and similar, dp, two pointers

Mr. Kitayuta's Colorful Graph

dfs and similar, dp, dsu, graphs

Mr. Kitayuta's Gift

brute force, implementation, strings

Misha and LCP on Tree

binary search, dfs and similar, hashing, string suffix structures, trees

Misha and XOR

bitmasks

Misha and Palindrome Degree

binary search, combinatorics, implementation

Misha and Permutations Summation

data structures

Misha and Forest

constructive algorithms, data structures, greedy, sortings, trees

Misha and Changing Handles

data structures, dsu, strings

Contest

implementation

New Year Running

number theory, trees

New Year Shopping

divide and conquer, dp

New Year Domino

data structures, dp, dsu

New Year Santa Network

combinatorics, dfs and similar, graphs, trees

New Year Book Reading

constructive algorithms, greedy, implementation, math

New Year Permutation

dfs and similar, dsu, graphs, greedy, math, sortings

New Year Transportation

dfs and similar, graphs, implementation

Lecture

implementation, strings

Watching a movie

greedy, implementation

Stairs and Lines

dp, matrices

Traffic Jams in the Land

data structures, dp, number theory

Array and Operations

flows, graph matchings, number theory

Name That Tune

dp, probabilities, two pointers

Crazy Town

geometry

Subsequences Return

dp, matrices

Gears

brute force, geometry, math

Distributing Parts

greedy, sortings

Tennis Game

binary search

Removing Columns

brute force, constructive algorithms, implementation

Secret Combination

brute force, constructive algorithms, implementation