250 Thousand Tons of TNT

brute force, implementation, number theory

Vova Escapes the Matrix

brute force, dfs and similar, divide and conquer, shortest paths

Milica and String

brute force, implementation, strings

Cyclic Hamming (Hard Version)

brute force, dp, fft, math, number theory

Cyclic Hamming (Easy Version)

brute force, divide and conquer, dp, fft, math, number theory

Infinite Card Game

binary search, brute force, data structures, dfs and similar, dp, dsu, games, graphs, greedy, sortings, two pointers

Torn Lucky Ticket

brute force, dp, hashing, implementation, math

Freedom of Choice

brute force, greedy, implementation

Anonymous Informant

brute force, dfs and similar, graphs, implementation

Brukhovich and Exams

brute force, greedy, implementation, math, sortings

Suspicious logarithms

binary search, brute force, math

Deja Vu

brute force, math, sortings

Game of Stacks

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

Doremy's Drying Plan (Easy Version)

brute force, data structures, dp, greedy, sortings

Minimum Array

binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers

Sum of Three

brute force, constructive algorithms, math

Medium Design

brute force, data structures, dp, greedy, sortings

Simple Design

brute force, greedy, math

Two Permutations (Easy Version)

brute force, constructive algorithms, greedy, number theory

Card Game

brute force, greedy

Sets and Union

bitmasks, brute force, constructive algorithms, greedy

Perfect Square

brute force, implementation

Don't Try to Count

brute force, strings

Last Man Standing

brute force, data structures, number theory

Interactive Game with Coloring

brute force, constructive algorithms, dfs and similar, graphs, implementation, interactive, trees

wxhtzdy ORO Tree

binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees

Vasilije Loves Number Theory

brute force, math, number theory

Clubstep

binary search, brute force, data structures, greedy, trees

Jellyfish and Undertale

brute force, greedy

Jellyfish and Math

bitmasks, brute force, dfs and similar, dp, graphs, shortest paths

Jellyfish and Game

brute force, games, greedy, implementation

Good Kid

brute force, greedy, math

Short Sort

brute force, implementation

Replace With Product

brute force, greedy, math

Two Vessels

brute force, greedy, math

Another MEX Problem

bitmasks, brute force, dp, shortest paths

Most Different Tree

brute force, constructive algorithms, dfs and similar, greedy, hashing

Cyclic Operations

brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation

Mighty Rock Tower

brute force, combinatorics, dp, math, probabilities

Lihmuf Balling

binary search, brute force, math

Matrix Cascade

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

Speedrun

brute force, dfs and similar, dp, graphs, greedy, math, sortings, two pointers

Magic Will Save the World

binary search, bitmasks, brute force, dp

Fancy Coins

binary search, brute force, greedy, math

Maximum Monogonosity

brute force, dp, math

Another Permutation Problem

brute force, dp, greedy, math

Rollbacks (Easy Version)

brute force, data structures, dfs and similar, trees

Trees and Segments

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

The Walkway

brute force, dp, greedy, math, number theory

To Become Max

binary search, brute force, data structures, dp

Longest Divisors Interval

brute force, combinatorics, greedy, math, number theory

Mark and Spaceship

brute force, dp

Game Bundles

brute force, constructive algorithms, dp, greedy, math

Earn or Unlock

bitmasks, brute force, dp

Fibonaccharsis

binary search, brute force, math

Desorting

brute force, greedy, math

Escalator Conversations

brute force, constructive algorithms, math

We Were Both Children

brute force, implementation, math, number theory

Balanced Round

brute force, greedy, implementation, sortings

Binary String Copying

binary search, brute force, data structures, hashing, strings

Vika and Stone Skipping

brute force, implementation, math, number theory

Vika and Bonuses

binary search, brute force, math, ternary search

Triangle Platinum?

brute force, combinatorics, implementation, interactive, math, probabilities

Vampiric Powers, anyone?

bitmasks, brute force, dp, greedy

Rudolf and Snowflakes (hard version)

binary search, brute force, implementation, math

Rudolf and Snowflakes (simple version)

brute force, implementation, math

Rudolph and Tic-Tac-Toe

brute force, implementation, strings

Rating System

binary search, brute force, data structures, dp, dsu, greedy, math, two pointers

Min Cost Permutation (Easy Version)

brute force, constructive algorithms, greedy, math

Tracking Segments

binary search, brute force, data structures, two pointers

Ranom Numbers

brute force, dp, greedy, math, strings

Railguns

brute force, dfs and similar, dp, graphs

Twin Clusters

bitmasks, brute force, constructive algorithms, math, probabilities

Lottery

binary search, brute force, greedy, math, two pointers

k-th equality

brute force, implementation, math

Typewriter

brute force, math

Survey in Class

brute force, data structures, greedy, implementation, sortings

Flipper

brute force, constructive algorithms, greedy

Combinatorics Problem

brute force, combinatorics, dp

Maximum Sum

brute force, sortings, two pointers

Mex Tree

brute force, dp, trees

The BOSS Can Count Pairs

brute force, math

Gold Rush

brute force, dfs and similar, dp, implementation

Palindrome Partition

binary search, brute force, data structures, dp, hashing, strings

Walk the Runway

bitmasks, brute force, data structures, dp, graphs, implementation, sortings

Running Miles

brute force, dp, greedy

Trust Nobody

brute force, greedy, implementation, sortings

Removing Graph

brute force, dp, games, graphs, math

Sort with Step

brute force, math, sortings

Magic Triples (Hard Version)

brute force, data structures, math, number theory

Magic Triples (Easy Version)

brute force, data structures, math, number theory

Gardening Friends

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

TubeTube Feed

brute force, implementation

Rearrange Brackets

brute force, dp, greedy, sortings, strings

Black Cells

binary search, brute force, greedy, math

Tear It Apart

brute force, implementation, math, strings

Sort the Subarray

brute force, greedy

Misha and Apples

brute force, data structures, dp, two pointers

Constructive Problem

brute force, greedy

Half-sum

brute force, divide and conquer, greedy