Shuffle Hashing

brute force, implementation, strings

Beautiful Rectangle

brute force, combinatorics, constructive algorithms, data structures, greedy, math

Remove One Element

brute force, dp

Three Friends

brute force, greedy, math, sortings

Divide The Students

brute force

Shawarma Tent

brute force, geometry, greedy, implementation

Suits

brute force, greedy, math

Modulo Equality

brute force, sortings

Equation

brute force, math

Invertation in Tournament

brute force, divide and conquer, graphs, math

Intriguing Selection

brute force, constructive algorithms, implementation, interactive, sortings

Beautiful Sequence

brute force, constructive algorithms, greedy

Tournament

brute force, dp, greedy

Make Them Similar

bitmasks, brute force, hashing, meet-in-the-middle

Tiling Terrace

brute force, dp

Broken Keyboard

brute force, strings, two pointers

Show Must Go On

binary search, brute force, greedy, shortest paths

Data Center

brute force, implementation

The Feast and the Bus

brute force, constructive algorithms, greedy, math

Good Numbers (easy version)

brute force, greedy, implementation

The World Is Just a Programming Task (Easy Version)

brute force, dp, greedy, implementation

Daniel and Spring Cleaning

bitmasks, brute force, combinatorics, dp

Paint the Tree

brute force, constructive algorithms, dp, graphs, implementation, trees

The Football Season

brute force, math, number theory

Rooms and Staircases

brute force, implementation

Alice and the Doll

brute force, data structures, greedy, implementation

Stones

brute force, greedy, math

Dawid and Bags of Candies

brute force, implementation

Complete Tripartite

brute force, constructive algorithms, graphs, hashing, implementation

Distinct Digits

brute force, implementation

p-binary

bitmasks, brute force, math

Graph And Numbers

bitmasks, brute force, combinatorics, dp, meet-in-the-middle

2048 Game

brute force, greedy, math

The Number Of Good Substrings

binary search, bitmasks, brute force

Numerical Sequence (easy version)

binary search, brute force, math

Badges

brute force, math

Optimal Currency Exchange

brute force, math

Two Small Strings

brute force, constructive algorithms

Equalizing by Division (hard version)

brute force, math, sortings

Equalizing by Division (easy version)

brute force, implementation

Marek and Matching (hard version)

brute force, probabilities

Marek and Matching (easy version)

brute force, probabilities

Marcin and Training Camp

brute force, greedy

Anadi and Domino

brute force, graphs

Rotate Columns (easy version)

bitmasks, brute force, dp, greedy, sortings

Uniqueness

binary search, brute force, implementation, two pointers

Remainder Problem

brute force, data structures, implementation

There Are Two Types Of Burgers

brute force, greedy, implementation, math

Shortest Cycle

bitmasks, brute force, graphs, shortest paths

Kirk and a Binary String (easy version)

brute force, greedy, strings

You Are Given Some Strings...

brute force, string suffix structures, strings

You Are Given a WASD-string...

brute force, data structures, dp, greedy, implementation, math, strings

You Are Given a Decimal String...

brute force, dp, shortest paths

Graph Traveler

brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory

Compress Words

brute force, hashing, implementation, string suffix structures, strings

White Lines

brute force, data structures, dp, implementation, two pointers

Hotelier

brute force, data structures, implementation

Welfare State

binary search, brute force, data structures, sortings

K-th Path

brute force, constructive algorithms, shortest paths, sortings

Three Piles of Candies

brute force, constructive algorithms, math

Sport Mafia

binary search, brute force, math

Count The Rectangles

bitmasks, brute force, data structures, geometry, sortings

Cubeword

*special problem, brute force, dp, meet-in-the-middle

Tokitsukaze and Mahjong

brute force, implementation

Tokitsukaze and Enhancement

brute force

Tokitsukaze and Duel

brute force, games, greedy

Two Pizzas

bitmasks, brute force

Polycarp and Snakes

brute force, implementation

Exam in BerSU (hard version)

brute force, data structures, greedy, math

Heidi Learns Hashing (Medium)

brute force, number theory

Heidi Learns Hashing (Easy)

brute force, math, number theory

Topforces Strikes Back

brute force, math, sortings

A Story of One Country (Hard)

brute force, greedy, sortings

A Story of One Country (Easy)

brute force, divide and conquer, sortings

Flag

brute force, combinatorics, dp, implementation

Archaeology

brute force, constructive algorithms, greedy, strings

Divide it!

brute force, greedy, implementation

The Number of Subpermutations

brute force, data structures, divide and conquer, hashing, math

Electrification

binary search, brute force, greedy

Good Triple

brute force, two pointers

Low Budget Inception

brute force, geometry

Lost Numbers

brute force, divide and conquer, interactive, math

Telephone Number

brute force, greedy, strings

The LCMs Must be Large

bitmasks, brute force, constructive algorithms, math, number theory

Cute Sequences

binary search, brute force, greedy, math

Magical Permutation

bitmasks, brute force, constructive algorithms, data structures, graphs, math

Power Transmission (Easy Edition)

brute force, geometry

Double Matrix

brute force, greedy

Inverse of Rows and Columns

brute force, constructive algorithms

Delivery Oligopoly

brute force, dp, graphs

Guess the Root

brute force, interactive, math

Beautiful Array

brute force, data structures, divide and conquer, dp, greedy

Minimum Possible LCM

brute force, greedy, math, number theory

Serval and Snake

binary search, brute force, interactive

Serval and Bus

brute force, math

Neko does Maths

brute force, math, number theory

Dima and a Bad XOR

bitmasks, brute force, constructive algorithms, dp

Maxim and Biology

brute force, strings

Abandoning Roads

brute force, dp, graphs, greedy

Born This Way

binary search, brute force, two pointers