Routine Problem

greedy, math, number theory

Pasha and String

constructive algorithms, greedy, math, strings

Bus Video System

combinatorics, math

Ticket Hoarding

greedy, math, sortings

Diverse Matrix

constructive algorithms, greedy, math, number theory

Where is the Pizza?

data structures, dfs and similar, dsu, graphs, implementation, math

Minimum number of steps

combinatorics, greedy, implementation, math

Round Corridor

math, number theory

Arrays Sum

constructive algorithms, greedy, math

New Year and the Sphere Transmission

math, number theory

Bash's Big Day

greedy, math, number theory

Covered Path

dp, greedy, math

Heavy Intervals

constructive algorithms, data structures, dsu, greedy, math, sortings

Torn Lucky Ticket

brute force, dp, hashing, implementation, math

Gourmet Cat

implementation, math

Candies!

data structures, dp, implementation, math

Add, Divide and Floor

constructive algorithms, greedy, math

The World is a Theatre

combinatorics, math

Lost Numbers

brute force, divide and conquer, interactive, math

Jellyfish and Green Apple

bitmasks, greedy, math, number theory

Filling the Grid

implementation, math

Fishingprince Plays With Array

constructive algorithms, greedy, implementation, math

Row Major

constructive algorithms, greedy, math, number theory, strings

Weird Sum

combinatorics, data structures, geometry, math, matrices, sortings

Place for a Selfie

binary search, data structures, geometry, math

Klever Permutation

constructive algorithms, math, two pointers

Bear and Prime 100

constructive algorithms, interactive, math

XOR-distance

bitmasks, greedy, implementation, math

Zero-One (Easy Version)

constructive algorithms, greedy, math

Sasha and the Casino

binary search, brute force, constructive algorithms, games, greedy, math

Anna and the Valentine's Day Gift

games, greedy, math, sortings

Dual (Easy Version)

constructive algorithms, math

Everyone is a Winner!

binary search, math, meet-in-the-middle, number theory

No Prime Differences

constructive algorithms, math, number theory

LR-remainders

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

Make Good

bitmasks, constructive algorithms, math

Computer Game

binary search, math

AND Sequences

bitmasks, combinatorics, constructive algorithms, math

Dreamoon Likes Permutations

implementation, math

Adding Digits

implementation, math

LIS or Reverse LIS?

constructive algorithms, greedy, implementation, math

Swaps

greedy, math, sortings

Toy Blocks

binary search, greedy, math, sortings

Absolute Sorting

constructive algorithms, math

Watchmen

data structures, geometry, math

Sum of Substrings

brute force, constructive algorithms, greedy, math, strings

Meximum Array

binary search, constructive algorithms, greedy, implementation, math, two pointers

Add Modulo 10

brute force, math, number theory

Simple Polygon Embedding

binary search, geometry, math, ternary search

National Project

math

Journey Planning

data structures, dp, greedy, math, sortings

Fortune Telling

bitmasks, math

Adding Powers

bitmasks, greedy, implementation, math, number theory, ternary search

Add to Neighbour and Remove

greedy, math, number theory

Johnny and Another Rating Drop

bitmasks, greedy, math

Composite Coloring

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

Game With Array

constructive algorithms, math

Divide by three, multiply by two

dfs and similar, math, sortings

k-th divisor

math, number theory

RationalLee

greedy, math, sortings, two pointers

Arranging The Sheep

greedy, math

Ball in Berland

combinatorics, graphs, math

Han Solo and Lazer Gun

brute force, data structures, geometry, implementation, math

Orac and Models

dp, math, number theory

Maximum Median

binary search, greedy, math, sortings

Fadi and LCM

brute force, math, number theory

Zero Remainder Array

math, sortings, two pointers

Number Game

games, math, number theory

Amr and Pins

geometry, math

Drazil and Factorial

greedy, math, sortings

I Hate 1111

dp, math, number theory

Two Buttons

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

Epic Novel

*special problem, math

Elevator

implementation, math

Not Wool Sequences

constructive algorithms, math

Rock-Paper-Scissors

implementation, math

Maximize Sum of Digits

*special problem, implementation, math

Cookies

math

A Student's Dream

greedy, math

2-3-numbers

implementation, math

Find Color

constructive algorithms, geometry, implementation, math

Counting Rhombi

brute force, math

Messages

math

Progress Bar

implementation, math

Friends

graphs, implementation, math

Forecast

math

Mister B and Angle in Polygon

constructive algorithms, geometry, math

After Training

data structures, implementation, math

Olympic Medal

greedy, math

Not Afraid

greedy, implementation, math

Okabe and Banana Trees

brute force, math

Lara Croft and the New Game

implementation, math

Plant

math

Magical Array

math

Segments

constructive algorithms, math

Cards

constructive algorithms, dp, math

A Trivial Problem

brute force, constructive algorithms, math, number theory

Selection of Personnel

combinatorics, math

Average Sleep Time

data structures, implementation, math

Dasha and friends

brute force, implementation, math