Good Number

implementation

Longest Palindrome

brute force, constructive algorithms, greedy, implementation, strings

Subsequence Addition (Hard Version)

bitmasks, dp, greedy, implementation, sortings

Detective Task

implementation

Subsequence Addition (Easy Version)

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

Shifting Sort

implementation, sortings

Carrot Cakes

brute force, implementation

250 Thousand Tons of TNT

brute force, implementation, number theory

The Lakes

dfs and similar, dsu, graphs, implementation

Update Files

greedy, implementation, math

Palindromic Numbers

constructive algorithms, implementation, math

The Clock

brute force, implementation

IQ Test

brute force, implementation

New Colony

brute force, greedy, implementation

Exercising Walk

greedy, implementation, math

Strange List

brute force, greedy, implementation, math

Snacktower

data structures, implementation

Sum of Two Numbers

constructive algorithms, greedy, implementation, math, probabilities

Product of Binary Decimals

brute force, dp, implementation, number theory

Petya and Countryside

brute force, implementation

Flower City Fence

binary search, data structures, implementation, sortings

Partial Replacement

greedy, implementation

Array Fix

brute force, dp, greedy, implementation

Turtle Fingers: Count the Values of k

brute force, implementation, math, number theory

Cardboard for Pictures

binary search, geometry, implementation, math

Colorful Stamp

implementation

Kind Anton

greedy, implementation

Tavas and SaDDas

bitmasks, brute force, combinatorics, implementation

Array

brute force, constructive algorithms, implementation

Maximum Rounding

greedy, implementation, math

Yet Another Card Deck

brute force, data structures, implementation, trees

Counterexample

brute force, implementation, math, number theory

Joysticks

dp, greedy, implementation, math

Matrix Game

games, greedy, implementation

Initial Bet

implementation

Bad Prices

data structures, implementation

Caisa and Pylons

brute force, implementation, math

Effective Approach

implementation

Perfect Number

binary search, brute force, dp, implementation, number theory

Frog Jumps

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

Cinema Line

greedy, implementation

Double Cola

implementation, math

Two Teams Composing

binary search, greedy, implementation, sortings

Fedor and New Game

bitmasks, brute force, constructive algorithms, implementation

A and B and Compilation Errors

data structures, implementation, sortings

Ilya and Queries

dp, implementation

Fancy Fence

geometry, implementation, math

Interesting drink

binary search, dp, implementation

Taxi

*special problem, greedy, implementation

Любимые числа Поликарпа

constructive algorithms, implementation

Three Problems

*special problem, implementation

Копирование файлов I

*special problem, brute force, implementation, math

Simple XML

implementation

Up the hill

constructive algorithms, implementation

Maximum Control (easy)

implementation

Elevator

brute force, implementation, math

Room Leader

implementation

Seating On Bus

implementation

Voting for Photos

*special problem, constructive algorithms, implementation

Digits Sequence (Easy Edition)

implementation

Little Artem and Grasshopper

implementation

Start Up

implementation

Choosing Laptop

brute force, implementation

K-Periodic Array

greedy, implementation, math

The Pleasant Walk

implementation

Robot Sequence

brute force, implementation

Tennis Tournament

implementation, math

Weather Tomorrow

implementation, math

Inna and Choose Options

implementation

Appending Mex

implementation

Shell Game

implementation

Young Photographer

implementation

Cows and Poker Game

brute force, implementation

Group of Students

brute force, greedy, implementation

Vasya's Calendar

implementation

Checking the Calendar

implementation

Jumping Ball

implementation

Sereja and Coat Rack

implementation

Numbers

implementation, math

Card Game

implementation

Water The Garden

implementation

The Fair Nut and Elevator

brute force, implementation

Eevee

brute force, implementation, strings

Canvas Frames

implementation

Bar

implementation

Table

constructive algorithms, greedy, implementation

Uncowed Forces

implementation

Polycarp and Letters

brute force, implementation, strings

Karen and Morning

brute force, implementation

Odds and Ends

implementation

Infinite Sequence

implementation, math

Saitama Destroys Hotel

implementation, math

Palindromic Times

implementation, strings

Balloons

constructive algorithms, implementation

Grandfather Dovlet’s calculator

implementation

Chat Servers Outgoing Traffic

implementation

Crossword solving

brute force, implementation, strings

Vanya and Table

implementation, math

Mahmoud and Ehab and the MEX

greedy, implementation

Vasily the Bear and Triangle

implementation, math