Startup Funding

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

Spy Syndrome 2

data structures, dp, hashing, implementation, sortings, string suffix structures, strings

Product Sum

data structures, dp, geometry

Messenger

data structures, hashing, implementation, string suffix structures, strings

Report

data structures, sortings

Famil Door and Roads

combinatorics, data structures, dfs and similar, dp, probabilities, trees

Babaei and Birthday Cake

data structures, dp

Zbazi in Zeydabad

data structures, implementation

Package Delivery

data structures, divide and conquer, greedy

Factory Repairs

data structures

Raffles

data structures, dp, greedy, math

Frog Fights

data structures, greedy

Not Equal on a Segment

data structures, implementation

Xors on Segments

data structures, strings, trees

New Year Tree

bitmasks, data structures, trees

Robot Arm

data structures, geometry

XOR and Favorite Number

data structures

Expensive Strings

data structures, sortings, string suffix structures, strings

Longest k-Good Segment

binary search, data structures, two pointers

Replace To Make Regular Bracket Sequence

data structures, expression parsing, math

New Year and Three Musketeers

data structures, greedy, sortings

Alphabet Permutations

data structures, strings

Vika and Segments

constructive algorithms, data structures, geometry, two pointers

Frogs and mosquitoes

data structures, greedy

Minimum spanning tree for each edge

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

Power Tree

data structures, trees

Board Game

data structures, dfs and similar

Lazy Student

constructive algorithms, data structures, graphs

Pastoral Oddities

data structures, divide and conquer, dsu, math, trees

A Museum Robbery

data structures, dp

Acyclic Organic Compounds

data structures, dfs and similar, dsu, hashing, strings, trees

Lipshitz Sequence

data structures, math

Lomsat gelral

data structures, dfs and similar, dsu, trees

Queries about less or equal elements

binary search, data structures, sortings, two pointers

Subsequences

data structures, dp

REQ

data structures, number theory

Happy Tree Party

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

Duff is Mad

data structures, strings

Duff as a Queen

data structures

Duff in the Army

data structures, trees

Kefa and Watch

data structures, hashing, strings

Modulo Sum

combinatorics, data structures, dp, two pointers

Painting Edges

binary search, data structures

Robots protection

data structures

Fibonotci

data structures, math, matrices

Bear and Bowling

data structures, greedy

Bear and Cavalry

data structures, divide and conquer, dp

Bear and Blocks

binary search, data structures, dp, math

Order Book

data structures, greedy, implementation, sortings

Campus

binary search, data structures, dsu, trees

Replacement

constructive algorithms, data structures, implementation

Longest Increasing Subsequence

data structures, dp

One-Dimensional Battle Ships

binary search, data structures, greedy, sortings

Geometric Progression

binary search, data structures, dp

Restructuring Company

data structures, dsu

A Simple Task

data structures, sortings, strings

Guess Your Way Out! II

data structures, implementation, sortings

Ann and Half-Palindrome

data structures, dp, graphs, string suffix structures, strings, trees

Arthur and Table

brute force, data structures, dp, greedy, math, sortings

Case of Chocolate

data structures

Case of Fugitive

data structures, greedy, sortings

Vanya and Triangles

brute force, combinatorics, data structures, geometry, math, sortings

GukiZ and GukiZiana

binary search, data structures, implementation

Yura and Developers

data structures, divide and conquer

Mike and Friends

data structures, string suffix structures, strings, trees

Mike and Feet

binary search, data structures, dp, dsu

Listening to Music

constructive algorithms, data structures

Duck Hunt

data structures

Place Your Ad Here

data structures, sortings

Infinite Inversions

binary search, data structures, implementation, sortings, trees

Summer Dichotomy

2-sat, data structures, dfs and similar, greedy

A Heap of Heaps

brute force, data structures, math, sortings

Tavas on the Path

data structures, divide and conquer, trees

Handshakes

binary search, constructive algorithms, data structures, greedy

Landmarks

data structures, dp

Berland Miners

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

Clique Problem

data structures, dp, greedy, implementation, sortings

Glass Carving

binary search, data structures, implementation

Pudding Monsters

data structures, divide and conquer

Arthur and Walls

constructive algorithms, data structures, graphs, greedy, shortest paths

And Yet Another Bracket Sequence

data structures, greedy, hashing, string suffix structures, strings

Rooks and Rectangles

data structures, sortings

Statistics of Recompressing Videos

*special problem, data structures, implementation

Closest Equals

*special problem, data structures

Photo to Remember

*special problem, data structures, dp, implementation

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 Compilation Errors

data structures, implementation, sortings

Anya and Smartphone

constructive algorithms, data structures, implementation

Drazil and Park

data structures

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

Constrained Tree

constructive algorithms, data structures

Misha and Permutations Summation

data structures

Misha and Forest

constructive algorithms, data structures, greedy, sortings, trees

Misha and Changing Handles

data structures, dsu, strings

New Year Domino

data structures, dp, dsu

Traffic Jams in the Land

data structures, dp, number theory

Sharti

data structures, games